![ABT Sportsline Audi S4](http://4.bp.blogspot.com/-vrBQrv4FarQ/T-nCpZInrvI/AAAAAAAIDBQ/FL5x0b0-tzc/s800/Audi-AS4-ABT-%2523.jpg)
German tuning firm ABT Sportsline believes the facelifted Audi S4 needs a little bit of help in the performance and to a lesser extent, the styling departments and so it has come up with a new tuning package for the sports sedan, which it calls the AS4. [...]
Source:
Carscoop