When beads of perspiration form on the brow of experienced sports car drivers, it's not necessarily down to a faulty air conditioning system. With the 420 V8-HP of the BMW M3, the ACS3 Sport catapults even its keenest challengers into the rear view mirror. The sporting coupé is ideal for anyone seeking to gain advantage on twisting tracks. A normal M3 would be a tough competitor here, because in comparison with the "civilised" 3-series Coupé it has a totally different axle construction. With racing suspension developed on the legendary Nürburgring, AC Schnitzer has succeeded in refining the handling potential of the chassis even further. And fitted with the Short Shift from Aachen, the ACS3 Sport becomes the automotive hero of the day: No-one is changing gears faster! Best of all: The vehicle loses nothing of its qualities as a daily driver. Instead, AC Schnitzer magics even more M-otion into everyday life, for example when the Aachen exhaust system plays its bewitching baritone in a road tunnel. The left/right system with two tailpipes per side, linked into a horizontal figure of eight, is however a visual work of art. In a play on the mathematical symbol for "infinity", at the same time it symbolises the powerful reserves of the vehicle which reaches 100 km/h from a standing start in an effortless 4.8 seconds. No less carefully arranged are the aerodynamic attachments, which for AC Schnitzer are always more than mere visual decoration. At the rear, a diffuser of visible <b>...</b>