The range of driver assistance systems raises the bar in the compact class: this includes a rear traffic crossing assistant that warns about possible collision risks when leaving a parking bay. Also new to the A3 family is the traffic jam assist, which works with the Audi adaptive cruise control with a Stop&Go function. This optional system maintains a set distance behind the car in front. When combined with the S tronic, it automatically starts up again after a short stationary period. Another new feature of the A3 family is the emergency assist. If, despite warnings, no steering activity is detected, the system will apply the brakes until the vehicle comes to a safe stop.