Even on perfect roads, quattro works to combine precise control with the dynamic responsiveness that makes driving an Audi so rewarding.
Slippery roads can cause loss of traction resluting in poor grip. quattro constantly analyses the grip from each of your Audi's four wheels, delivering power to each of them.
Ice and snow can make even familiar roads treacherous. quattro means all four wheels work together, delivering power where it's needed and helping you stay on the road and stay safe.
Article source: www.audi.co.uk