A first for the A6: integrated brake control system
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The A6 uses an integrated, blending-capable brake control system (iBRS). With this brake-by-wire technology, the brake pedal and brake hydraulics are completely decoupled. In the variants with MHEV plus technology, the system calculates whether the desired braking effect can be achieved by regenerative braking using the electric motor – that is, the powertrain generator – or whether the friction brakes on the front and rear axles must also be activated. In a fraction of a second, the control unit calculates how much braking force needs to be produced by the friction brakes. A piston in the brake hydraulics then applies the necessary pressure. Brake feel remains the same as the pedal is depressed, with the transition between regenerative and friction braking imperceptibly smooth and homogeneous, and the braking forces remaining constant. Thanks to the electrohydraulic actuation, the system very precisely builds up the brake pressure for the wheel brakes and about twice as fast as a conventional brake system. When automatic emergency braking is activated, the maximum brake pressure is reached in just 150 milliseconds.
The equipment, data and prices specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.