The new Mercedes-Benz Tourismo RHD (Druckansicht)

The unmistakable face of the new high-deck model

In the middle of the carefully sculpted front end of the high-deck model is the typical Mercedes-Benz grille in the form of a mask, presenting the high-decker's friendly and welcoming smile to the world around it. The louvres create an intriguing display of light and shadow. The large central star radiates the self-confidence of a major brand and of the market leader among high-deck touring coaches. The mask is painted as standard in the colour of the vehicle, but is optionally available with chrome-plated applications.

Distinctive headlamps frame the mask, while swage lines resembling eyebrows serve to add character to a heavy vehicle for commercial use. A contour underneath the headlamp 'eye' creates an optical illusion of width. All components together give the Tourismo RHD an unmistakable face that exudes competence.

Below the grille, the negative indent of the central part of the bumper gives the coach a powerful presence on the road. The contoured corners of the bumpers with their integrated fog lamps and turn indicators serve to emphasise the look of power and confidence.

Between the seemingly downwards-elongated windscreen and the grille, a horizontal light-catching contour helps to give structure to the front of the coach. In the centre, above this, a small indentation accommodates the Mercedes-Benz badge. The overall impression is of a face that sits perfectly within the big Mercedes-Benz product family. Onlookers would immediately recognise the new Tourismo RHD as a Mercedes-Benz, even without the badge.

Aerodynamically optimised from tip to tail

Curving away above the Tourismo's distinctive face is the mighty dome of the windscreen. This integrates the end-outline marker lamps, features flow-optimised radii that continue through into the roof and combines an aerodynamically perfected shape with ideal visibility for both driver and passengers. The frameless Aquablade windscreen wipers cling closely to the windscreen, which flows seamlessly round in broad radii into the flat side wall, allowing the airstream to flow almost unobstructed along the coachwork. Design elements are used to underline the self-contained form of the new Tourismo RHD: dark shading is used to make the A-pillars appear invisible. The driver's window and the doors are integrated flush with the vehicle body. The smooth and almost seamless lines, with their streamlined airflow, furthermore reduce irritating wind noise and make the coach easy to clean.

A full 80 of the 130 mm of the extended front end, compared with the predecessor model, go into the pronounced curve of the front overhang. Typical of the ingenious aerodynamic solutions are also hidden components such as the panelling of the area beneath the front overhang.

There's another clever idea that you can't see: at speeds of 95 km/h or over, the body of the new Tourismo RHD lowers automatically by an imperceptible 20 mm. Once the speed goes back down below 70 km/h, the body automatically rises again. The lowering reduces the frontal area and thus also fuel consumption and emissions. The shape of the exterior mirror arms, reminiscent of a leaf, is also the result of aerodynamic optimisation. They emerge from a characteristic three-dimensionally shaped, wing-like element. This is painted in the vehicle colour and appears to float out from the side windows and the panels above the front door and driver's window.

The exterior mirror covers are coloured grey as standard, or can optionally be painted in the same colour as the vehicle. In addition to the main and wide-angle mirrors, the mirror systems can also as an option include front area lighting. To make things easier when the vehicle is washed or for tight manoeuvring or parking, folding mirrors are available upon request, with an electric folding mechanism a further option.

Body structure more markedly curved, distinctive belt line trim strip

Compared with the previous model, there is a more pronounced narrowing of the upper part of the body. This curvature takes away something of the forceful impact of the high-decker's body, while at the same time improving passengers' view from the side windows. The double-glazed windows are available with different levels of tint and with a graduated transparency that ranges from the standard 56 percent down to ten percent - the latter a particularly striking visual effect.

One distinctive characteristic feature of the high-decker is the belt line, which drops towards the front end of the vehicle and is edged in black. At the level of the front door, or below the driver's window on the other side, this line takes a pronounced turn downwards, to then flow into the dark area beneath the windscreen. The line encircles the whole front section of the high-decker, creating a design feature that serves to reinforce the characteristic face of this model.

The rear corner pillar takes a clear turn upwards from the belt line, so adding a dynamic boost to the high-deck model's shape. This classic theme takes its cues from the great tradition of Mercedes-Benz touring coaches such as the legendary predecessor model, the O 303. Further momentum comes from the angled, upward curve of the radiator louvres. The panelling for the roof-mounted air-conditioning system can if so required be painted in the vehicle colour. Should an exclusive look for the high-decker be sought, elegant side trim, in the vehicle colour, can be fitted to conceal the roof-mounted unit.

An attractive rear end with aerodynamically defined edges

The rear end of the touring coach is characterised by the brand's hallmark trapezium-shaped rear window with integrated Mercedes star. Like every other bus or coach built by the brand, it is therefore immediately recognisable from behind as a Mercedes-Benz, even from a considerable distance.

The rear of the new Tourismo RHD, with its powerful shoulder blades and V-shaped pressed panelling, is unmistakable and athletic in design. It has been compared by aesthetically-minded observers with an ionic pillar. As with the front radiator grille, this structure leads to an attractive interplay of light and shadow.

The engine compartment is ventilated via a grille on the right-hand side (as viewed in the direction of travel). This deliberate asymmetry adds interest to the view of the rear. To the left of this is a large area suitable for the application of the name or brand logo of the bus operator.

The rear end of the new Tourismo RHD has also been subject to aerodynamic optimisation. The rear edge of the roof as well as the corner pillars taper in slightly to benefit the air flow and are finished with an air flow break-away edge – the new Tourismo has been aerodynamically optimised from tip to tail. In order that this should not compromise the passenger compartment, the rear overhang has been lengthened by a minimal but worthwhile 15 mm. Taken together, all these features effectively prevent aerodynamically adverse air turbulence, while at the same time limiting the build-up of dirt at the back.

Outstanding drag coefficient for outstanding fuel consumption

Its pronounced cost effectiveness is one of the most important features of the new Tourismo RHD, as it was for its predecessor. Cost effectiveness joins form and function as the third dimension of design. The fuel-saving aerodynamics reduce costs, preserve the environment as a consequence of the lower emissions and conserve resources. With a Cd value of 0.33, the new Tourismo RHD boasts an outstanding drag coefficient that is unmatched by any other touring coach.

The wind has no chance against the perfect aerodynamics of the new Tourismo RHD, ensuring a further saving of fuel with every motorway mile. Taking into account the weight reduction of around 200 kg, the experts at Mercedes-Benz have calculated a consumption advantage of around 4.5 percent. In addition, there is the consumption advantage of the OM 470 engine generation with efficiency package, which was introduced in summer 2016. This results in a saving of up to seven percent.Assuming an annual mileage of 100 000 km, this adds up to around 1500 to 2000 litres of fuel, or about three fuel tanks full – cash in hand for operators.

Further proof of the excellent everyday viability and economic efficiency of the high-deck model is also provided by a plethora of carefully considered components. The main headlamps as well as the fog lamps have been adopted for the new Tourismo RHD from the Mercedes-Benz Actros, while the tail lights come from the best-selling urban bus, the Citaro. Both are ideally suited to the new Tourismo RHD, reduce costs and simplify the procurement of replacement parts in the event of minor damage. Removable wheel arch covers all round for the two-axle model are also designed with costs in mind.

More bus, but still less weight

Although the new Tourismo RHD has grown by a few centimetres compared with its predecessor, and although it features the Front Collision Guard (FCG) to provide better protection for the driver and front-seat occupant in the event of a collision, it weighs noticeably less. This is because the timelessly attractive outer shell of the Tourismo RHD is not the only new element, but also the self-supporting framework immediately beneath it. Thanks to new node elements made up of optimised pillar cross-sections, the new framework is both stronger and lighter in weight.

The now lighter high-decker therefore meets the forthcoming even more stringent regulations according to UN ECE R66.02 for the residual survival space to be preserved in the passenger compartment after a rollover accident. The new Tourismo has not only proved this improved stability in countless computations, but also in practice: Mercedes-Benz has thoroughly tested the bodyshell of the high-deck model, including the interior ceiling, on the servohydraulic test rig. The development engineers have meticulously examined every single detail with an eye to weight, which is why even the air-conditioning system is now appreciably lighter in weight, although its performance remains as hitherto.

All in all, the weight of the two-axle model, compared with its predecessor, has been reduced by around 200 kg for a vehicle with identical engine and specification. For the weight-sensitive two-axle models above all, this increases the payload reserves for a comfortably appointed coach with a full complement of passengers and luggage. Furthermore, the Tourismo RHD benefits from the increase in permissible gross vehicle weight for buses and coaches in the EU, in the case of a two-axle model up to 19.5 t. As a three-axle model, the new Tourismo RHD is licensed at 24.75 t.

Convenient entrances, an attractively designed passenger compartment, a high degree of flexibility in terms of equipment and appointments, a new seating concept, superb climate and plenty of space for luggage - the new Tourismo RHD makes things as pleasant as possible for its passengers. And the same is true for the driver: where else would you get a high-deck touring coach with a choice of two cockpits, either of which can be precisely configured to your requirements?

Welcome aboard: the convenient entrances of the new Tourismo RHD

The new Tourismo RHD makes it easy for passengers: the extended front section provides plenty of space for the entrance at door one, which is wide and therefore both convenient to use and safe. The straight steps are evenly spaced, while grab rails on each side guide passengers safely into the passenger compartment. The aisle here is 1370 mm above the level of the road, while the front section no longer slopes. The standing room of 2010 mm is sufficient for even tall passengers. The seats are mounted on platforms 150 mm high, making it easier to stand up or take a seat, even for less agile passengers. With the bottom of the windows at a height of 750 mm and the slight narrowing of the side wall, passengers are assured of a good view from the side windows.

Attractive and welcoming passenger compartment

The light and attractive interior of the Tourismo RHD marks a new approach to interior design for Mercedes-Benz. Colours and shapes are completely new. The multiple sections of the roof dome flow harmoniously into the luggage shelves. There are two lockable compartments here for the driver and tour guide, both very neatly integrated. These can also be used to house the DVD player and the optional Wi-Fi media router.

The roof dome, stowage compartments, the end pieces of the luggage shelves and the window pillar trim are all greige in colour. This blend of grey and beige is pleasing to the eye, and also harmonises with the wide range of fabric colours available. Greige is also a light shade that makes the passenger compartment appear larger. Two glazed roof hatches provide further illumination of the passenger compartment. The central section of the ceiling is trimmed with a light grey textile panel. Where bus operators opt for muted colours, Mercedes-Benz is also able to supply the ceiling trim upon request in dark grey. Other colour schemes are also possible, over and above these basic colourways, to coordinate with the individual concept for the interior.

The roof dome at the front can accommodate a 19-inch monitor – electrically folding if so desired – while a second can be fitted near door two. As a special option, folding monitors in the central roof area are also possible. All monitors fitted have a light, slim frame that blends well with the interior of the new Tourismo RHD. The roof dome also accommodates displays for time and temperature, the on-board toilet, seat belt signs and for stop request signs when used in regular service.

The luggage shelves in the Tourismo RHD are open and self-supporting in design. The mounting brackets are discreetly integrated and also serve as partitions, while the shelves themselves are lined in needlefelt, both of which features help to prevent hand luggage from slipping around. The front edge of the luggage shelf forms a basic handle strip, although Mercedes-Benz can also fit a grab rail as an option.

Flooring and fabrics: the Tourismo RHD has something for everyone

The new Tourismo RHD is a high-deck touring coach tailored for a wide range of applications and for a diverse audience, and it is operated by all sorts of companies in many different countries. Its exceptionally varied range of appointments is therefore designed to satisfy widely diverging requirements and tastes. For example, as an alternative to the two standard flooring options of a metallic look or pebble design, there are six further variants in various shades of wood, from light to dark in tone. Mercedes-Benz is also happy to accommodate special requests.

Options include floor mats, different colours for the side wall panelling, for curtains and the fabric on the underside of the air ducts and for the panels and door of the toilet cabin. To make the choice a little easier for customers, the designers have put together a range of pre-assembled schemes in light/dark versions. These offer carefully coordinated combinations of fabrics for the side walls, ceiling and the lower shell of the luggage shelves.

A feast for the eyes: the new Softline seating

A true feast for the eyes, and unique across the sector, is the new Softline seating. The quilted diamond pattern used for the central section of the seat cushion and backrest is reminiscent of that found in a luxury-class Mercedes-Benz car and adds considerably to the appeal of the passenger compartment. The Softline seating is available in a single colour or a two-tone look, upon request with piping, with the leather-fibre material Composition and with the Mercedes star in the form of a badge in the backrest.

The new Tourismo RHD is generally fitted with the tried and tested seating of its predecessor. This is produced in-house, and is comfortable as well as light and of high quality. A wide range of variants are available. The entry-level version is the Travel Star Eco seat with its functional upholstery. The Softline variant, by comparison, features additional cushioning with a fleece lining, a contoured backrest and quilting. The top-of-the-range Luxline is even more generously cushioned, and features a distinctive pleat in the side of the seat and backrest.

Height-adjustable high-comfort head restraints and the robust, high-quality Composition leather-fibre material provide scope to further enhance and individualise the seating, as do armrests, drink holders and/or folding tables in the backrests, with luggage nets or pockets, as well as footrests and numbered seats. A particularly exclusive option is the version with a Mercedes star set into the backrest. Depending upon which seats are chosen, there is a wide range of fabric and colour combinations for the seat centre panel and backrest (both can feature more than one colour), head section and piping.

There are also options to individualise the adjustment levers and grip inserts of the seats. Fitted as standard in grey, these are also available upon request in high-gloss black or with a wood or silver finish. Optional charging facilities, with USB or 230-volt sockets at each seat, ensure the power supply for passengers' portable devices.

Interior lighting: versatile "Ufos" with LED technology

As with the seating, the appointments of the passenger compartment see functionality and comfort complementing each other. The interior lighting system of the new Tourismo RHD features long-lasting and energy-saving LED technology throughout. The ceiling lights are a distinctive feature, harking back to the two previous and extremely successful model series. Insiders have given them the affectionate nickname of "Ufos".

The new Tourismo RHD boasts a high-tech lighting system. The lamps are flat in design and feature two brightness levels, allowing them to be used for interior lighting purposes as well as for orientational illumination during night-time travel, while the lamps along the sides also serve to illuminate the luggage shelves. The two-axle models include seven ceiling lights, the three-axle models eight. To coordinate with the overall look of the new high-deck model, the frames of the ceiling lights are finished as standard in greige, with silver as an option.

Individually equipped galley kitchen, made to measure

Operators wishing to be able to serve their passengers with warm drinks or snacks may opt for one of the compact galley kitchens that can be fitted next to the central entrance just back from door two. A galley with a hot water boiler suitable for making tea is also offered with the requirements of British customers specifically in mind.

For the first time, Mercedes-Benz is presenting a completely redesigned galley in the Tourismo RHD, with a look that is perfectly coordinated with the interior design of the Tourismo RHD. The specific equipment here is variable and designed to meet the needs of even the most discerning customers: a 60-cup coffee machine, an espresso machine or tea-making facility, a hot dog heater or a microwave are all available. On top of the kitchen there is a large storage box for supplies - or an additional coolbox can be fitted here. The housing for all variants is identical. The new galley features energy-saving technology, is operated via a touchscreen and is microprocessor-controlled – high-tech in the Tourismo RHD extends to its appointments, too.

Underneath the kitchen is a multi-purpose compartment that can be accessed in tried and tested fashion from both inside and outside. This can be furnished with all the necessary equipment, from a mattress and lighting to heating, air conditioning and an on-board telephone, to provide a rest area for a driver.

Opposite the kitchen, just in front of door two, is the location for the optional washroom and toilet compartment. As hitherto, this is also available in a reinforced long-distance version with larger tanks and particularly robust fittings, which can optionally include an electric hand drier and a hand-sanitiser dispenser.

Optional provision of a lift for mobility-impaired passengers

The new Tourismo RHD offers a welcoming environment to all passengers, including those with impaired mobility. Even the steps at the entrances meet the requirements for disabled access in accordance with ECE-R 107. The coach is also available as an option with a lift for passengers in wheelchairs. The lift stows away inside the luggage compartment in a cassette located just behind the front axle on the entrance side, where it is neatly concealed behind a separate flap. If a lift is installed, an additional door is provided to the passenger compartment. The passenger double seats in the area near the door are mounted on a floor rail system that allows them to be moved. A wheelchair can also be securely anchored to these rails.

Sophisticated climate control system ensures sense of wellbeing

We want passengers on board the new Tourismo RHD to feel comfortable at any time of year, which is why the development engineers have put considerable effort into the climate control system for the interior compartment. An effective convector heating system is used to keep the interior warm, backed up if necessary by a fuel-powered auxiliary heater.

The standard air conditioning system is designed for ease of maintenance as a roof-mounted system, positioned centrally on the roof. Depending on the vehicle length and the requirements of the market, it can have a cooling capacity of 32 kW, 35 kW or 39 kW. The new two-zone controls, with two circuits each for cooling and heating, ensures an even distribution of temperature along the whole length of the vehicle. The driver's area boasts a separate climate control system. The likewise new air humidity sensor system helps to improve climate comfort and therefore passenger wellbeing.

The air conditioning system is significantly lighter in weight than that of the previous model as well as more economically efficient: an optional cylinder shutoff system for the refrigerant compressor reduces the energy requirement and thus the fuel consumption of the coach. Background: whereas with conventional systems the compressor runs permanently, in the new Tourismo RHD it is only switched on when required. The heating and climate control system has proved its effectiveness under the toughest of conditions, having, for example, being tested in the cold chamber at minus 20 degrees Celsius.

The luggage compartment between the axles has grown

Since the basic frame of the Tourismo RHD is now four centimetres higher, the luggage compartment between the axles has grown for all models. Depending on the model, it has a capacity that ranges from 9.9 m³ to 12.1 m³ (a toilet next to the centre door reduces the capacity by 1.2 m³ in each case).

In addition to this, there are useful stowage compartments near the axles, designed for equipment such as snow chains or for the driver's luggage or supplies for the galley and coolbox. The two-axle models each have a large compartment on the left-hand side above the rear axle, plus another on the right-hand side behind the rear axle. Together these offer additional capacity of 1.35 m³. The three-axle models can accommodate three compartments: one stowage compartment on each side above the drive axle, plus a further compartment on the left-hand side above the rear axle.

The space around the axles is also where the development engineers have managed to accommodate the vehicle's technical features and accessories. Both the main and the auxiliary switch panels are located on the right-hand side above the front and rear axle respectively, so ensuring that they can be accessed easily and safely. The same is true for the tool kit, which is also kept in the area of the rear axle. The batteries are similarly accessible, in a compartment on the left-hand side (in the direction of travel) above the front axle (two-axle models) or on the left-hand side above the trailing axle (three-axle models).

The first and only high-deck touring coach that comes with a choice of cockpits

In the design of any Mercedes-Benz bus or coach the driver plays a key role, as is immediately evident from a look at the attractive and functional, as well as extremely driver-oriented, layout of the cockpit. In the case of the new Tourismo RHD left-hand drive variants there are two alternatives here, catering for a wide range of applications and requirements - the functional Basic Plus cockpit and the up-market Comfort Plus version. On top of these, there is a separate cockpit specifically for the right-hand-drive models.

As well as the height of the basic frame of the new Tourismo RHD being raised, the floor height of the two driver cockpits has been slightly increased by 50 mm to 910 mm above the surface of the road. The fractionally higher seating position brings advantages for the driver's view of the road. The pedals are now pendant in design. Drivers of the new Tourismo RHD take their place on seats built by either Grammer (model MSG 90.6) or Isringhausen 6860/875 NTS2. These can be adjusted in a multitude of ways and feature both automatic seat belt recognition and an integral microphone. Seat heating and a swivel function can be provided as options. Both seats offer drivers exceptional comfort on long journeys. To make it easier for the driver to leave their seat, the pneumatically adjustable steering wheel can be moved to an almost vertical position. Both cockpits also boast a whole range of stowage facilities, from drinks holders to oddments trays. The lower of the two steps between the driver’s platform and the aisle can also accommodate a safe.

Technically speaking, the two cockpits, Basic Plus and Comfort Plus have many features in common. They are both based on the new B2E electronics platform. The essentially driver-oriented layout of the cockpit is also identical. They have been refined to ensure optimum visibility and ergonomics – all the vital control elements are clearly and logically arranged within easy reach of the driver. The neat four-spoke multifunction steering wheel is also a common feature. This is available as an option in leather and can also be further upgraded with decorative finishes for the upper and lower rim sections.

Both variants also feature the same dashboard with four clear round instruments and a centrally positioned colour display. The position of the new electronic ignition key and separate starter button and of the tachograph, in each case on the left-hand side of the dashboard, as also the underlying arrangement of switches in clusters of four is common to both. Such shared features make it easy for drivers to change vehicles quickly within a fleet that operates a range of different variants, without needing to allow for refamiliarisation.

The Basic Plus cockpit: focus on functionality

Nevertheless, the two cockpits for the left-hand drive models do differ in design and structure, as well as in their appointments. The focus of the Basic Plus cockpit is on functionality, as is made clear by its modular structure. The coolbox (capacity 54 litres) on the right-hand side makes this clear – the high-decker could quite conceivably not include one.

To the right of the instruments, near the driver, is a large covered stowage compartment. The cover here can be removed to allow a ticket machine to be fitted, for example for occasional use on rural regular-service routes or long-distance routes. The multifunctional approach taken for the Basic Plus cockpit means that the standardised units for the control elements for the entertainment electronics are located in the centre console.

The Comfort Plus cockpit: impressive looks, CMS multimedia system

The sweeping lines of the Comfort Plus cockpit accommodate the coolbox on the tour-guide side. This has a capacity of 67 litres and features an elegant, curved hand rail that reflects these lines. As well as the different look, the decorative finish underlines the up-market appeal of this version. In general terms, the Comfort Plus cockpit adopts the pleasantly tactile and attractive foam-cushioned and grained surface in anthracite. The driver's area is furthermore delineated by a broad inlay strip in high-sheen matt silver metallic. The flowing lines so evident here have led the designers to speak of a "waterfall", which flows from the left-hand side of the instrument cowl to the centre console. The Comfort Plus cockpit combines functionality with impressive looks. These are apparent in the decorative surface finish found on the tour guide side: while this comes as standard in black, it is also available as an option with a carbon-fibre- or burr walnut-look finish. In each case the finish matches the inlay in the handles in the passenger compartment.

The Comfort Plus cockpit not only looks good, but is also impressively practical. The distinctive design of the dashboard provides space for the Coach Multimedia System CMS. This neatly and compactly encompasses the controls for the complete on-board entertainment system, with radio, CD player, MP3/WMA connection and DVD drive, including the standard navigation system with individual vehicle data and a Bluetooth module for operating the telephone. All key functions are visualised on a 7-inch colour display, so freeing up the centre console and providing space for a closed compartment. Occupants of the front seat also have additional functions at their fingertips: in front of where a tour guide would sit is a groove designed to support a tablet securely, plus a tray that can hold A4-size documents.

Any tour guide on board the new Tourismo RHD is certainly well looked-after, in an individual seat with a folding seat cushion and armrests. The shell of the seat has an integrated grab handle, a feature that comes in useful when passengers are boarding and alighting. The backrest of the tour guide's seat is adjustable, as is the guide point for the three-point seat belt. Like the driver's seat, the seat here features an automatic seat belt recognition system. Electrical adjustment can be added as an option. A cupboard or a double seat are among the further available options. The tour guide's microphone is mounted handily in a holder on the right-hand side of the dashboard next to the coolbox.

Loudspeakers, interior mirror, roller sunblinds – top-level equipment for the Tourismo RHD

Both cockpits have been altogether meticulously appointed. Loudspeakers above the driver's window as well as above door one ensure a good quality of sound for both driver and tour guide. The redesigned interior mirror is mounted at the top of the windscreen in the centre. Its frameless design is reminiscent of the mirrored glass of a pair of trendy sunglasses.

Electrically operated scissor-type blinds provide protection from low sun. A further optional and manually operated roller blind can be mounted as an option in the trim above the driver's window to protect against glare. If so required, destination display systems can be installed in the windscreen, at the side and at the rear for use in regular-service operations.

Separate cockpit for right-hand-drive models

For its right-hand-drive markets Mercedes-Benz has developed another, separate version of the cockpit. While visually it resembles the left-hand drive version of the Basic Plus cockpit, it also includes the Coach Media System CMS. The electronics structure, instruments and operating logic, including the multifunction steering wheel, correspond to those of the left-hand drive cockpit. Keyboard, key and tachograph have been transposed to the other side of the vehicle in a mirror inversion.

A drive system that comes from a single source, with perfectly matched components, ensures maximum fuel efficiency and exceptional economy in the new Tourismo RHD. Engine, transmission and rear axle all bear the Mercedes star. The only exception to this rule is provided by the right-hand-drive models, which feature a torque-converter automatic transmission. Additional engine and output variants significantly enhance the spectrum of the new Tourismo RHD. They add up together with the excellent aerodynamics of the new Tourismo RHD and sophisticated assistance systems such as Predictive Powertrain Control and Eco Driver Feedback to reveal the new Tourismo as the new economic miracle among high-deck touring coaches.

Proven in-line six-cylinder unit with highly effective efficiency package

The entry-level engine in the new Tourismo RHD was a tried and tested feature of the previous model: the turbocharged in-line six-cylinder Mercedes-Benz OM 470 with a displacement of 10.7 l shines out with a technical package that comprises common rail direct injection with the unique and flexible high-pressure injection system X-Pulse, charge air cooling, exhaust gas recirculation and SCR technology. The engine is therefore able to offer a convincing blend of fuel efficiency, powerful acceleration, smooth running and reliability. Detailed further development involving an extensive package of efficiency measures to create a new generation in 2016 brought improvements in all these areas.

Buyers have been able to benefit since then from an even more consumption-optimised version of this state-of-the-art engine. With a higher maximum injection pressure, increased compression, a redesigned combustion chamber, a patented exhaust gas recirculation process with reduced recirculation, asymmetric injection and a new turbocharger, built in-house, what we have here is a whole bundle of measures that add up to reduce further the already advantageous fuel consumption. At the same time the complexity of the engine design has been reduced by a fixed turbine geometry for the turbocharger, the omission of wastegate valve and boost pressure control, plus the elimination of the EGR sensor and EGR control, thereby also increasing its robustness.

New top-of-the-range engine offers outstanding performance

With the change of model, Mercedes-Benz is now adding a new top-of-the-range engine to expand the output spectrum for the Tourismo RHD. The three familiar output categories of the in-line six-cylinder unit, with 265 kW (360 hp), 290 kW (394 hp) and 315 kW (428 hp), have now been topped by a variant with an output of 335 kW (456 hp) and a particularly powerful peak torque of 2200 Nm.

The bare facts of output and torque of this new variant already give an indication of its outstanding performance. With a specific output of 31.4 kW per litre of displacement (42.7 hp/l) and a specific torque of 206 Nm/l, the OM 470 is one of the most powerful engines in its size category, making it the obvious choice for customers seeking that combination of exceptional performance and outstanding economic efficiency.

New entry-level engine with impressive fuel efficiency

Mercedes-Benz is also extending its engine portfolio for the Tourismo RHD at the other end of the scale. The key word in this case is downsizing: the new addition to the high-decker's engine range is the super-compact in-line six-cylinder Mercedes-Benz OM 936, with a displacement of 7.7 l, which can be fitted as an option. Courtesy of two-stage turbocharging, the engine achieves an output of 260 kW (354 hp) and a peak torque of 1400 Nm, thus proving itself remarkably powerful. The engine with this power level has already proved its capability in the compact Tourismo K, the inter-city bus Mercedes-Benz Intouro and even in the mighty Citaro G articulated bus, so now it's the turn of the high-deck touring coach.

The new compact engine is available for both two-axle variants of the Tourismo RHD. It is the ideal solution for situations where exceptional economy in terms of fuel consumption is sought in conjunction with maximum payload for a full complement of seats in topographically less challenging environments. Examples for this might include shuttle vehicles, buses for combined excursion and regular-service use, or countries and regions with traditionally lower performance requirements.

Two engines with a total of five output ratings

The exceptionally broad engine portfolio for the new Tourismo RHD therefore comprises two in-line six-cylinder engines with altogether five output ratings:

- OM 936, displacement 7.7 l, output 260 kW (354 hp), torque 1400 Nm
- OM 470, displacement 10.7 l, output 265 kW (360 hp), torque 1700 Nm
- OM 470, displacement 10.7 l, output 290 kW (394 hp), torque 1900 Nm
- OM 470, displacement 10.7 l, output 315 kW (428 hp), torque 2100 Nm
- OM 470, displacement 10.7 l, output 335 kW (456 hp), torque 2200 Nm

All engines meet the Euro VI emission standard. The basis for the emission control system is provided by SCR technology with AdBlue injection. The tank system for diesel fuel is positioned behind the front axle and is the same on all models. The double tank has a capacity of 480 l, can be filled from either side and, in conjunction with the low fuel consumption of the new Tourismo RHD gives the coach an excellent range. The tank for AdBlue is located on the right-hand side behind the front axle and has a capacity of 40 l.

Three transmission variants to cover all applications and regions

The transfer of power is undertaken as standard by a six-speed Mercedes-Benz manual transmission via a practical joystick lever in the cockpit. The transmissions are proven units adopted from the previous model series.

The same is true of the optional fully automated eight-speed Mercedes-Benz GO 250-8 PowerShift transmission. This is available for all engine variants, including the compact Mercedes-Benz OM 936. With its progressive stepping, the transmission is precisely configured for use in buses and coaches. Changes of gear are undertaken both quickly and comfortably. A crawler mode allows delicate manoeuvring using the brake pedal alone as with an automatic transmission with torque converter. The fully automated transmission is controlled in the Tourismo for the first time via a space-saving and intuitively operated steering column switch. This has already been used in other Mercedes-Benz vehicles. Manual intervention during driving is not normally necessary, which means that the driver can keep both hands on the wheel.

Power is transferred fully to the proven Mercedes-Benz RO440 hypoid rear axle. This is extremely durable, as an axle designed specifically for buses it is particularly smooth running, and is both exceptionally efficient and fuel-saving in operation. As a way of catering to the specific area of deployment for an individual coach, operators can choose between two transmission ratios. These are configured for either maximum fuel efficiency or for traction.

For the right-hand-drive variants Mercedes-Benz has taken a different approach. As the operators in such countries tend to prefer automatic transmissions, the fully automatic eight-speed Mercedes-Benz GO 250-8 PowerShift bus transmission is fitted as standard in all vehicle variants. The right-hand-drive variants can also be equipped as an option with the six-speed ZF Ecolife torque-converter transmission.

Predictive Powertrain Control: anticipatory cruise control

Even lower fuel consumption, even more relaxed driving: the fully automated eight-speed Mercedes-Benz GO 250-8 PowerShift transmission finds its ideal companion in the optional driver assistance system Predictive Powertrain Control (PPC), a combination that improves efficiency still further. This anticipatory cruise control system is now available for the first time for the Tourismo RHD. PPC accesses the topographical data of virtually 100 percent of the motorways, trunk and main roads in Europe. Via GPS, PPC can at all times detect the current position of the coach and the route ahead with its height profile. On the basis of this data, the current speed plus the specified speed, the present vehicle mass plus information on the engine output, torque and transmission, PPC not only controls the speed but also intervenes in the transmission and selects the appropriate gear.

PPC accelerates before steep inclines, selects the right gear in an anticipatory fashion when going uphill, reduces power before hilltops and, within the permitted speed range, allows the touring coach to freewheel on downhill gradients with light peak engine revs. In so doing PPC also uses EcoRoll technology: in cases where this is worthwhile, the technology selects the transmission's neutral setting and thus allows the touring coach to freewheel for longer in a consumption-saving manner without any drag losses. The technology then smoothly selects and applies the appropriate gear. In short, with this tactic, and as tests have shown, PPC drives as considerately as an excellent coach driver. It does so with the utmost attention, around the clock, without any loss of stamina and with a perfect knowledge of virtually all the trunk roads in Europe.

The anticipatory cruise control system Predictive Powertrain Control (PPC) can save as much as four percent fuel in a coach. Depending on topography, PPC can however also reduce consumption significantly further.

Costs under control: the new Tourismo RHD - the economic miracle

However, it's not only the fuel costs that companies have better under control than ever with the new Tourismo RHD. Other factors, too, can help reduce the Total Cost of Ownership (TCO). Long maintenance intervals, for instance, are just one important aspect of excellent economic efficiency. For the new Tourismo RHD, for example, long oil change intervals of up to 120 000 km can be achieved. Such intervals have a direct impact on costs, while also preventing unnecessary time off the road. This is a particularly significant factor where high mileage is accumulated, for example in use on long-distance routes.

The previous model was already known for its economic efficiency, but Mercedes-Benz has now taken this quality to new heights. Taking all cost-reduction measures together, the new Tourismo RHD is revealed as an economic miracle among high-deck touring coaches. The further significantly reduced fuel costs and long maintenance intervals are backed up by optimised rates for maintenance and service contracts.

Translated into monthly costs, its more favourable fuel consumption means that operators of a new Tourismo RHD will start to benefit about halfway through each month from lower costs compared with the previous model. Taking TCO including capital costs into consideration, operators of the new touring coach will find themselves better off to the tune of a double-digit figure in euros each month compared with the previous model. This on top of the established benefits such as the Europe-wide close network of bus-specific service outlets, the use of certified genuine parts, an exemplary replacement part supply service, training for drivers and workshop employees and, not least, once again the expectation of a high resale value.

Eco Driver Feedback gives drivers tips on driving style

But that's not all. Eco Driver Feedback is another assistance system, available as an option, that is there to support the driver. It assesses a driver's personal driving style according to numerous parameters, then provides individual feedback to the driver, along with suggestions. It is like having a virtual co-driver along for the ride, who advocates an economical driving style.

Costs under control with the Fleetboard Bus telematics system

Another virtual co-driver carries the name Fleetboard Bus. The new Tourismo RHD includes the telematics platform TP4 and comes prepared for use of the telematics system. Assuming the corresponding agreements between the bus operator and the service brand Omniplus, the Tourismo RHD therefore benefits, for example, from services such as 24h Service with telediagnosis - an important example of the advantages that come with connectivity.

Mercedes-Benz and safety – the two are inseparably linked. Every bus or coach built by Mercedes-Benz offers the ultimate in safety for its passengers, its driver and for other road users. The key objective in all this is the active prevention of accidents. Should an accident nevertheless occur, its consequences will be kept to a minimum. The Mercedes-Benz integral safety concept was developed with all this in mind. For the new Tourismo RHD the consequence of this work is that there is no safer coach in its segment.

The holistic approach to safety – the integral safety concept

The integral safety concept for Mercedes-Benz buses and coaches involves a holistic approach and is made up of a number of separate modules. The fundamental starting point is a comfortable and safe suspension offering outstanding handling, coupled with an exemplary cockpit for the driver with maximum operating comfort and an exceptional level of driver-fitness safety. Whether we're talking about the ergonomically perfect dashboard, a comfortable, multi-way adjustable seat or a mirror system that is second to none - the new Tourismo RHD is driver-oriented and therefore safety-oriented through and through. Assistance systems provide the driver with further support. Passive safety systems ensure maximum protection should, despite everything, an accident occur. Flanking measures for the Tourismo RHD include driver safety training, conscientious maintenance and the use of certified genuine parts.

Emergency braking system Active Brake Assist 3: early full brake application when approaching obstacles

The new Tourismo RHD comes equipped as standard with an Advanced Emergency Braking System (AEBS). The basis for AEBS is provided by a radar sensor with a range of 200 metres. Within this distance the sensor constantly monitors the gap to vehicles ahead and uses this to calculate the relative speed. The radar sensor also calculates the distance to stationary obstacles. If a situation becomes so critical that an accident appears unavoidable unless conditions change, and the driver shows no sign of reacting, automatic emergency braking will be triggered. In the meantime a series of alerts give the driver the opportunity to intervene actively to prevent an accident. The driver remains in charge at all times and can intervene to override the system. AEBS considerably reduces the risk of a rear-end collision.

Mercedes-Benz can equip the new Tourismo RHD as an option with Active Brake Assist 3 (ABA 3). The crucial difference to AEBS lies in its enhanced functionality: with ABA 3, the braking intervention for stationary obstacles occurs sooner, which also means earlier emergency braking. ABA 3 is therefore not only able to reduce the speed in the event of an imminent collision with a stationary obstacle, but can apply full emergency braking to bring the vehicle to a stop to actively prevent an accident - within the limits of physics - for example when the coach encounters an unexpected tailback.

The popular option of adaptive cruise control comes as standard with Active Brake Assist 3. Indeed, its radar sensor provides the basis for ABA 3. When adaptive cruise control detects a slower vehicle travelling ahead, it automatically brakes the coach until a speed-dependent distance preset by the driver has been reached. The system then constantly maintains this distance.

Stop/Start Assist provides automatic assistance in queuing traffic

Adaptive cruise control combined with the additional Stop/Start Assist function supports the driver in traffic jams or as traffic continues to slow down. Whereas adaptive cruise control operates in a speed range from 15 km/h to 100 km/h, the additional function extends that from 0 km/h to 100 km/h. If the vehicle is at a standstill for no longer than two seconds, the distance controller remains active even in slow-moving traffic below 15 km/h and will take the coach from a standstill back to the previously specified speed. If this two-second period is exceeded, the driver can reactivate adaptive cruise control by gently tapping the accelerator pedal or using the appropriate cruise control button on the steering wheel keypad. Steady braking and acceleration boost ride comfort for passengers and reduce the strain on the driver.

Attention Assist counters drowsiness, Docking Lights help with manoeuvring

In addition to the Advanced Emergency Braking System (AEBS), the new Tourismo RHD is equipped as standard with a whole range of assistance and safety systems designed to prevent an accident. Already long a standard feature of the Tourismo RHD are the anti-lock braking system (ABS), acceleration skid control (ASR), the Electronic Stability Program (ESP), Lane Assistant (SPA) and the Electronic Braking System (EBS) including Brake Assist (BAS) and Continuous Braking Limiter (DBL).

Making its debut now in the Tourismo RHD is Attention Assist. This drowsiness detection system gives the driver early warning of possible fatigue. It uses steering and braking activity as well as speed to establish the driver's physiological condition. If Attention Assist detects incipient fatigue, it vibrates the driver's seat in warning.

The new optional Docking Lights help focus the driver's attention by providing surround lighting during tricky manoeuvring. Positioned on each side of the vehicle in front of the rear axle, they serve to illuminate the area behind the coach and provide useful assistance at night, for example when manoeuvring through entrances or on car parks.

Good light brings safety. Which is why the new Tourismo RHD features powerful H7 halogen headlamps as standard. Even more powerful bi-xenon headlamps can be supplied as an option. The indicators and daytime running lamps are both integrated into the headlamp housings. The standard specification also includes fog lamps, to which a cornering light function can be added as an option. Many of the lights feature LED technology, for example the rear and side indicators, the positioning lights or the optional tracking lamps.

A multitude of individual safety features

Mercedes-Benz will equip the high-decker as an option with a rain and light sensor. Its diodes are used to identify rain or spray and their intensity, oncoming lights, ambient light and tunnels, so allowing it automatically to switch the driving lights and the windscreen wipers on or off, adjusting the latter's speed as necessary. A reversing camera helps the driver during manoeuvring. This now monitors a wider vertical and horizontal angle, making it even more useful than ever.

The automatic tyre pressure monitoring system (TPM) issues a warning of the tyre pressure deviates from what it should be. Sensors are used to calculate the pressures of each tyre precisely, which are then shown clearly in the dashboard display. In this way the driver can see the exact tyre pressure for each separate tyre and, if necessary, adjust it at the next stop. Correct tyre pressures reduce wear on the tyres and can prevent tyre damage, while they can also have a positive impact on consumption and emissions.

Front Collision Guard provides effective protection for driver and front-seat occupant

Should, despite all the assistance systems, an accident occur, passengers and drivers in the new Tourismo RHD are nevertheless optimally protected. The highlight of the passive safety features is the patented Front Collision Guard (FCG), which provides effective protection for the driver and front-seat occupant in the event of a frontal impact.

FCG consists of a complex safety system. Its components include a transverse section which acts as an underride guard to protect other road users in the event of an accident. Behind this section is a structure consisting of crash elements, which absorb energy in a predetermined manner in the event of an impact. In addition, the driver's area including the steering, pedals and seat is mounted on a solid frame section that can slide backwards in its entirety in the event of a serious frontal impact, thereby increasing the driver's survival space by several crucial centimetres.

The annular frame design meets structural rigidity requirements in accordance with UN-ECE R66.02

Should, despite all safety measures, the high-deck model tip over onto its side or even roll down an embankment, the all-encompassing annular frame structure of the new Tourismo RHD provides the best possible protection and maximum survival space. This annular frame technology is the prerequisite for the coach's strong and yet lightweight shell. The high-decker meets the forthcoming requirements for structural rigidity as defined in the regulation UN ECE R66.02. Guidelines for Rescue Services simplify access to the interior after an accident for the emergency services.

Last, but by no means least, the standard equipment of all Mercedes-Benz buses and coaches includes a fire alarm system with a detection function that monitors the engine compartment. In addition, smoke alarms for the luggage compartment and toilet are available, as is an extinguishing system for the engine compartment.