8 Airbags : Being a sedan, the A4 includes an adaptive front-end collision protection system. This feature includes seat position recognition and includes full sized front airbags, with airbags for the head, side and rear side.
Electronic stability control (ESC) : All features of the A4 sedan have separate sensors under the ESC. This system can network reference and driving data as well as the EBD & ABS. Additionally, it can also intervene in the engine management and provide targeted braking for individual wheels.