Transmissions

Regardless of the engine under the bonnet, Peugeot 407 Coupe comes with a 6-speed gearbox. The 2.2 litre engine is combined with a manual gearbox, while the V6 Diesel engine comes with an automatic gearbox. The V6 petrol engine meanwhile can be equipped with either. These manual or automatic gearboxes offer six speeds adapted to the special power and torque characteristics of each engine.

It is the first time the ML6/C manual gearbox has been fitted to the V6 ES9/A petrol engine, only the final drive ratio differs from that fitted to the 2.2 litre engine (14/69) and that of the V6 3.0 litre (14/67). To ensure dynamic performance for each engine, the gear ratios are therefore lower in the 4-cylinder engine version.

The 6-speed transverse automatic gearbox (AM6) inaugurated on Peugeot 407 and then introduced on the 607 is of course offered with both V6 engines. With a torque capacity in excess of 450 Nm, it adapts naturally to the maximum value of 440 Nm developed by the DT17 engine (V6 HDi).

This gearbox, compact in terms of size and weight, offers a dynamic and lively performance without excessive fuel consumption.

Each engine differs by the chosen final drive ratio (54/47 for the DT17 and 49/52 for the ES9/A).

This gearbox is capable of adapting to the driving style of the driver, who can if desired also choose a more active driving style using the "Porsche Tiptronic System" sequential control. It is equipped with integral electronic management and "event-based" self-adaptability according to the road profile at any given time, steering wheel speed, type of driving adopted, etc…

By reducing loss of engine speed between gear changes, this automatic gearbox offers driving pleasure, while remaining quiet in operation and economical in terms of fuel consumption.



Wheels and suspension

Peugeot 407 Coupe offers a high level of active safety thanks to a suspension that has proven its worth on Peugeot 407 saloon and SW.

In addition to the increase in the tracks, other specific modifications have been made to further enhance the efficiency and naturally high torsional rigidity of the structure of this new car (0.71 mrd).

The double wishbone front suspension and integral multi-arm rear suspension therefore "work" under the best possible conditions to benefit active safety, driving pleasure and passenger comfort.

The front and rear suspension components benefit from advanced technology such as the use of Cobapress aluminium, which offers the same mechanical properties as forged steel.

The lower body height is obtained by reducing the height of the front springs by 10 mm and those at the rear by 23 mm. To limit incipient roll and obtain effective coordination between the front and rear suspension equipped with new flexibility and enhanced rigidity, the bump stops are shorter and denser than on saloons and SWs.

At the front, the separation of vertical movement and steering movement determines optimal direction consistency under all circumstances (control of the wheel plane) and also ensures the virtual elimination of steering inaccuracies, which helps cornering and also reduces sensitivity to wheel imbalance.


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