The overall concept is therefore orientated towards optimizing the handling. With success, as "sport auto" concluded after our driving tests at Hockenheim: "On the 2.6 km track, where it can demonstrate its clearly more agile driving and handling behaviour, it crosses the line with a one second lead over its standard brother. The ACS3 Sport has superb handling properties." The M3 owes this in part to the AC Schnitzer racing suspension, the short shift gear change and modified rear axle ratio.