How it works: the Self Locking Centre Differential
The Self Locking Centre Differential is at the heart of quattro® on models with the engine positioned longitudinally along the car’s centreline such as the Audi A4 allroad.
Operating entirely mechanically, it continuously reacts to road conditions and responds to any differences in the rotational speeds between the axles. This ensures more power is always transmitted to the wheels with a better grip.

