• Mercedes-AMG GT4 – A new class of performance.

    Mercedes-AMG GT4 – A new class of performance.

    At the 2017 24-hour race at Spa-Francorchamps, Mercedes-AMG presented the latest competition car: the Mercedes-AMG GT4.

Production-base meets proven racing technology.

The Mercedes-AMG GT4 is based on the Mercedes-AMG GT R that was introduced in June, 2016 and already has a particularly high level of race track performance. The highly dynamic characteristics of the road-legal sports car were developed further in a consequent way. The many years of experience from the GT3 segment have clearly been incorporated into the development. It especially arrives to set new benchmarks in its class relating to safety, ergonomics, driveability, performance as well as service- and user-friendliness. The Mercedes-AMG GT4 is powered by the 4.0-litre V8-biturbo engine with direct fuel injection, known from the Affalterbach road cars. The proven production technology of the front-mid engine allows for particularly long service intervals and also provides sufficient performance reserves for the future. Depending on the balance of performance, this results in an output of up to 375 kW (510 PS) and a maximum torque of over 600 Nm.

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A comprehensive test and development programme.

As Test and Development Drivers, Bernd Schneider, Thomas Jäger and Jan Seyffarth are largely contributing to the maturity of the Mercedes-AMG GT4. Like with the SLS AMG GT3 and the Mercedes-AMG GT3, the co-operation between the experienced drivers and the engineers from Affalterbach is an important element in the complex vehicle development process. The close interaction between the experts results in excellent driveability, a characteristic that is typical for the Mercedes-AMG Customer Racing cars. Prior to the first deliveries, scheduled for the end of 2017, the Mercedes-AMG GT4 is to undergo further intense testing.

The programme includes a total of over 30,000 kilometres of track testing. The new car has already successfully proven its reliable endurance performance and high durability in a 30-hour endurance test at race speed at the Lausitzring. To allow for experience from real racing conditions to be integrated into the development, three prototypes will be participating in selected test races during the current 2017 motorsport season. For these outings, the cars will be run in co-operation with development partner HWA AG and, if required, with support from partner teams.

Exact driving performance and user-friendly racing electronics.

The highly precise driving characteristics rank among the outstanding features of the Mercedes-AMG GT4. The suspension with double wishbones and dampers with adjustable rebound and compression gives a direct and clear feedback to the driver in every situation. Drivers of every level quickly find confidence in the car as a result. The electronics assembly has also been revised. Among other things, highlight is an optimised version of the AMG TRACTION CONTROL that enables the driver to adjust the slip on the rear axle in eleven levels to suit varying grip conditions.

Further development of a proven power unit and optimized gearshift.

In the construction and the integration of the gearbox, the focus of the development was not only on performance, but also on the high service and rebuild friendliness. Like in the Mercedes-AMG GT3, the sequential six-speed competition gearbox in the Mercedes-AMG GT4 is linked to the rear axle in transaxle formation and is pneumatically operated. This arrangement results in a favourable weight distribution and a lower centre of gravity. To achieve maximum performance at the race track, the Mercedes-AMG GT4 has been weight-optimised in every area. An intelligent mix of aluminium and carbon has been used for the chassis and the bodywork. The structure of the GT4 consists of a very light and extremely rigid aluminium spaceframe that can also be found in the Mercedes-AMG GT R and that has been honoured with the “Leichtbau Award 2017”, an innovation award from the German engineers’ association VDI.

Optimised design.

The new Mercedes-AMG GT4 is bringing the characteristic design of its production counterpart to the race track. The unmistakable features include the flat front section with the radiator grille that is tilted to the front. This layout lowers the stagnation pressure point on the car to improve both the aerodynamic performance and the flow of the cooling air through the bonnet. The aerodynamics are playing a leading role: building on the innovative aerodynamic concept of the Mercedes-AMG GT R, the race car was further optimised in a comprehensive wind tunnel test to achieve a handling that is as neutral as possible. Ergonomics and functionality also prevail in the interior. In addition to sufficient space for tall drivers, the effective flow through the interior with fresh air is particularly pleasant for the driver.

Benchmark-setting safety.

The Mercedes-AMG GT4 has adopted the proven safety concept of its “big GT3 brothers” and is thus setting new benchmarks in its class. The best possible driver protection has the highest priority. Here, the rollcage of high-strength steel, screwed onto the aluminium spaceframe, is playing a central role. The carbon driver safety cell meets the latest FIA homologation standards and features an integrated headrest. Optionally, this is also available for the passenger seat. Because of its design, the safety cell also provides a very high level of protection for a driver’s shoulders, hips and legs. Moreover, it is compatible with the HANS (Head And Neck Support) system. An extrication hatch in the roof and a powerful fire extinguishing system round out the competition-specific safety features.