The optional lane-change assistant Audi side assist including Audi pre sense rear monitors the area to the side behind the vehicle within the system limits – a useful function when changing lane, for example on the motorway.
Displays are integrated into the exterior mirrors. From a speed of 30 km/h, Audi side assist uses two radar sensors with a range of about 70 metres to measure the distance and speed difference of the vehicles detected compared with your own car. Whenever Audi side assist interprets the speed difference and distance as critical if you proceed with a lane change, a display appears in the appropriate exterior mirror (information level). This display is only visible when the exterior mirror is looked at directly. If you set the turn indicator and Audi side assist has detected a vehicle that it identifies as critical, the appropriate display in the exterior mirror flashes brightly several times (warning level). The brightness of the display can be adjusted over three stages in the MMI.