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Rear-axle steering

911 GT3
Porsche - Rear-axle steering

Rear-axle steering

Fuel consumption* 911: Urban in l/100 km (mpg) 18.9 (15.0)-11.3 (TBA); Extra urban in l/100 km (mpg) 8.9 (32.0)-6.6 (TBA); Combined in l/100 km (mpg) 12.4 (23.0)-8.2 (34.4); CO2 emissions in g/km 289-191.

Fitted as standard, the new rear-axle steering combines performance and everyday practicality. An electromechanical adjustment system at each rear wheel enables the steering angle to be adapted based on the current driving situation, steering input and vehicle speed. The advantage for day-to-day driving: during low-speed manoeuvres, the system steers the rear wheels in the opposite direction to that of the front wheels. This has the virtual effect of shortening the wheelbase. The turning circle is reduced to make it easier to park. The advantage for sporty driving: during high-speed manoeuvres, the system steers the rear wheels in the same direction as that of the front wheels.

Driving stability is increased by the virtual extension of the wheelbase and agility is enhanced by the simultaneous steering of the front and rear axles, especially during overtaking manoeuvres on the racetrack.