Production Mercedes-AMG ONE breaks cover
To mark the 55th anniversary of the performance and sports car brand AMG, the production version of the Mercedes-AMG ONE is celebrating its world premiere. The two-seater super sports car brings the world's most modern and efficient Formula 1 hybrid drive technology from the race track to the road for the first time. The performance hybrid produces a total output of 782 kW (1063 hp) from one combustion engine and four electric motors, with a top speed capped at 352 km/h.
The E PERFORMANCE hybrid drive of the Mercedes-AMG ONE comes directly from Formula 1 and has been realised in close cooperation with the experts at Mercedes-AMG High Performance Powertrains in Brixworth. It consists of a highly integrated and intelligently networked unit comprising one hybrid, turbocharged combustion engine with a total of four electric motors. One has been integrated into the turbocharger, another has been installed directly on the combustion engine with a link to the crankcase and the two remaining motors drive the front wheels.
The 1.6-litre V6 hybrid petrol engine with electrically assisted single-turbocharging corresponds in its technology to the current Formula 1 power unit. The four overhead camshafts are driven by spur gears. To achieve high engine speeds, the mechanical valve springs have been replaced by pneumatic valve springs. The engine, mounted in mid-engine position in front of the rear axle, revs up to 11,000 rpm. However, for longer durability and the use of commercial super plus petrol, it deliberately stays below the F1 rev limit.
The high-revving power unit is boosted by a high-tech turbocharger. The exhaust gas turbine and compressor turbine are positioned at a distance from each other and connected by a shaft. This allows a lower installation position for the turbocharger. On the shaft is an approx. 90 kW electric motor. Electronically controlled, this drives the turbocharger shaft directly, accelerating the compressor wheel up to 100,000 rpm before the exhaust gas flow takes over. The Formula 1 designation for this unit is MGU-H (Motor Generator Unit Heat).
The major advantage: the response improves significantly, immediately from idle speed (when the exhaust flow is still weak) across the entire rev range. The 1.6-litre V6 engine responds even more spontaneously to accelerator pedal commands, while the overall driving experience is highly dynamic. In addition, the electrification of the exhaust gas turbocharger enables higher torque at low engine speeds. This also increases agility and optimises acceleration. Even when the driver takes their foot off the accelerator or brakes, the technology is able to maintain boost pressure at all times. This ensures a continuously direct response.
Turbocharging and direct injection with spray-guided combustion not only enable high power output, but also increase thermodynamic efficiency, thus reducing fuel consumption and exhaust emissions. The high-performance six-cylinder engine has two injection systems. Direct injection delivers the fuel into the combustion chambers at up to 270 bar pressure. This is a multiple process at times, and is controlled by the engine management system as required. The additional port injection is needed to achieve the high specific power of the engine and at the same time comply with the exhaust emission limits.
The two 120 kW electric motors on the front axle reach rotor speeds of up to 50,000 rpm. They are each connected to the front wheels via a reduction gear. The front axle, which is thus driven purely electrically, operates wheel-selectively in each case and thus enables individual torque distribution for particularly high driving dynamics ("torque vectoring"). In addition, the two electric motors also allow the braking energy to be optimally used for recuperation - up to 80 percent under everyday driving conditions. This energy is stored in the battery and is available for a longer electric range or for more drive performance. Each electric motor is controlled by its own power electronics located in close proximity to the electric motors in the floor assembly.
The lithium-ion energy storage system is also a special Mercedes-AMG development. Its technology has already proven itself in the Mercedes-AMG Petronas F1 Team's Formula 1 hybrid racing cars under the toughest conditions and can also be found in the battery of the Mercedes-AMG GT 63 S E PERFORMANCE. The AMG High Performance Battery combines high power that can be called up frequently in succession with low weight to increase overall performance. Added to this are the fast energy draw and the high power density. This means that during a brisk drive in hilly terrain, for example, drivers can immediately call on the full power potential on uphill stretches, while recuperation is strong when driving downhill.
The arrangement of the battery cells and the cell cooling mirror the Mercedes-AMG Formula 1 racing car. For everyday use, however, their number is many times greater in the Mercedes-AMG ONE. The capacity of 8.4 kWh is sufficient for a purely electric range of 18.1 kilometres. Charging is via alternating current and the integrated 3.7 kW on-board charger. In addition, the battery can be supplied with fresh energy via recuperation or from the combustion engine. The lithium-ion, high-voltage battery and the DC/DC converter supporting and charging the 12 V onboard electrical system are accommodated in space-saving configuration in the vehicle floor behind the front axle.
The Mercedes-AMG ONE starts silently at first by switching on the electric motors on the front axle. In parallel, the catalytic converters are preheated. The combustion engine will not start until the correct catalytic converter temperature is reached.
Impressive acceleration is possible with the RACE START function in the Race, Race Plus and Strat 2 drive programs: the sprint from a standstill to 200 km/h is completed in just 7.0 seconds.
Power is transmitted to the rear wheels by means of a 7-speed manual transmission completely newly developed for the Mercedes-AMG ONE. The lightweight transmission design saves weight, while integration into the body-in-white enhances rigidity and takes up little space. It is specifically designed for the high torque and speed capacity of the powerful Formula 1 hybrid powertrain. Shift rods and the 4-disc carbon-fibre clutch are hydraulically controlled. The gear ratios are designed to minimise the power difference after upshifting and keep the combustion engine at high revs. The locking differential is integrated into the transmission.
The basis for the outstanding driving characteristics of the Mercedes-AMG ONE is the lightweight and high-strength carbon-fibre monocoque, the technology of which also originates from Formula 1. The same applies to integration of the engine and transmission: both fulfil load-bearing functions and completely support the rear suspension.
The chassis is an aluminium construction at the front and rear, each with five links and two adjustable suspension struts. The coil-over suspension has several special features: both push-rod spring struts have been installed across the direction of travel. The innovative arrangement of the spring and damper unit replaces the function and use of a conventional tubular cross stabiliser. This solution reliably prevents rolling movements, even during very rapid directional changes, without being uncomfortable. Roll stiffness and roll damping are completely independent of lift stiffness and lift damping. Wheel bearings with ceramic ball bearings for less friction reflect the attention to technical detail.
The adaptive damping adjustment can be adapted via the drive program: the C (Comfort) and S (Sport) suspension settings are available in the EV, Race Safe, Race and Individual drive programs; the S (Sport) and S+ (Sport+) suspension settings are available in the Race Plus and Strat 2 drive programs. As part of the active aerodynamics, the chassis can be lowered hydraulically: by 37 millimetres on the front axle and by 30 millimetres on the rear axle. In addition, a lifter for the front axle (can only be activated in the road drive programs) prevents the Mercedes-AMG ONE from touching down on underground parking ramps, for example.
The overall tuning of springs and dampers has been designed for perfectly balanced, easily controllable and highly dynamic handling. This is also assisted by the all-wheel drive and torque vectoring. Unlike in Formula 1, ABS is on board as standard, while ESP® can be regulated in three stages, as is customary at Mercedes-AMG. ESP® ON stands for high safety and is always activated in "Highway" mode. ESP® SPORT HANDLING MODE allows higher yaw angles before system intervention for sporty driving. ESP® OFF switches the system off for extremely dynamic driving on closed-off circuits. All three settings are possible in "Track" mode.
A new development is the 10-spoke forged aluminium wheel with centre lock, which is exclusive to the Mercedes-AMG ONE. This has a radial carbon-fibre partial cover with an aerodynamically sophisticated shape: it improves the aerodynamic efficiency of the vehicle by enhancing the flow around the wheel. This is another example of how the AMG development team has paid the utmost attention to even the smallest aspects, so as to improve the efficiency of the hypercar.
At the front, the Mercedes-AMG ONE runs on 10.0 J x 19 wheels with 285/35 ZR 19 Michelin Pilot Sport Cup 2R M01 tyres, which were developed exclusively for the hypercar, and at the rear on 12.0 J x 20 wheels, with Michelin Pilot Sport Cup 2R M01 tyres in size 335/30 ZR 20. The exclusivity of the tyres is reflected in the design of the sidewall, which incorporates the vehicle silhouette and the number 1.
A special, weight-optimised AMG carbon-fibre ceramic high-performance composite brake system is used for deceleration. The front axle sports 6-piston fixed callipers and also internally ventilated and perforated brake discs measuring 398 x 38 millimetres. The rear axle is fitted with 4-piston fixed callipers. In addition, it has internally ventilated and perforated brake discs measuring 380 x 34 millimetres. The low weight of the system reduces the unsprung masses and thus increases driving dynamics and agility. Furthermore, the ceramic brake features a longer service life, higher corrosion resistance and higher thermal stability. The "AMG Carbon Ceramic" lettering and the specially painted brake callipers visually distinguish this unique brake system.
The design of the carbon-fibre body is inspired by the top class of motorsport. But above all, it embodies the Mercedes-AMG principle that fascination is always linked with function. Each component fulfils a task. The mid-engine concept based on a carbon-fibre monocoque plus a load-bearing engine/transmission unit provides the extremely muscular proportions: the cockpit is positioned far forward, as is typical for racing, combined with voluminous wheel arches, a wasp waist and a wide tail.
The front view is characterised by the large front apron, the various air intakes of which extend across the entire vehicle width. The trapezoidal centre section bears a large, white AMG logo. Above it, on the vehicle body, is the Mercedes star. It is designed in the form of an artistically and technically perfect airbrush motif - by a specialist in the UK. The AMG-typical A-wing under the centre section adds another characteristic highlight and merges seamlessly into the wings.
The high-tech materials and colour combinations of the outer skin are transferred directly from racing. Functional exterior components are presented in exposed carbon fibre and contrasted with sculpturally sensual paint surfaces.
The active, hydraulically controlled aerodynamics increase downforce on the front and rear axles and also improve aerodynamic efficiency. Depending on the driver's preference and the selected drive program, three different aerodynamic setups are available:
- "Highway" in the "Race Safe", "Race", "EV" and "Individual" drive programs:
the louvres are closed, the active flaps on the front diffuser are extended and the rear wing including flap is retracted. - "Track" in the drive programs "Race Plus" and "Strat 2" (both only allowed on the race track):
the front diffuser flaps fold up to shape the front diffuser contour to maximum efficiency. The rear wing extends fully, as does the rear wing flap. The louvres are opened to increase the downforce on the front axle and to increase the negative pressure in the wheel arches. The vehicle is lowered by 37 millimetres at the front axle and 30 millimetres at the rear axle. The consequence of all these measures: the total downforce increases up to five times compared with the road drive programs, depending on the speed. - "Race DRS" (Drag Reduction System), can be activated at the touch of a button as in Formula 1, in the race track drive programs:
the rear wing flap retracts completely and the louvres are closed. Although this reduces downforce by around 20 percent, the Mercedes-AMG ONE reaches high speeds even faster. DRS can be deactivated manually or is automatically deactivated as soon as the driver brakes or lateral acceleration is measured.
The Mercedes-AMG developers have also thought about suitability for everyday use and further ease of operation: air conditioning and electric windows are on board as standard, and the infotainment system ensures seamless connectivity. The user interface is integrated as an autonomous concept. The most important information is displayed on the road in the line of vision above the steering wheel, so that the driver is not distracted. To ensure optimal rearward visibility despite the vertical wing on the rear, the interior mirror is replaced by a screen. It shows real-time footage from a MirrorCam integrated into the rear. The screen housing is fully integrated into the roof and accommodates further controls.
Inspired by the Formula 1 racing car, the material contrasts are also consistently and authentically continued in the interior. Here, too, the exposed carbon fibre of the monocoque forms a delightful contrast with the material/colour combination of the seat pans in magma grey nappa leather and black DINAMICA microfibre. With their special design, the seat inlays support air circulation at the driver's back. Yellow contrasting topstitching adds further highlights as standard, but other colours are also available.
Material-appropriate and high-quality details, such as the ventilation nozzles in silver shadow and dark chrome, create further individual highlights. The seat belt straps and contrasting topstitching in the typical AMG yellow underscore the performance claim. Customers also have extensive options for very personal individualisation, which can be specified in close consultation with the experts at Mercedes-AMG.
The car's complex development was carried out in close cooperation with the Formula 1 experts at Mercedes-AMG High Performance Powertrains in Brixworth. The Mercedes-AMG ONE will also officially be seen in action for the first time in the UK, as part of the Festival of Speed at Goodwood (23 to 26 June 2022).
