[7][8] Other changes included BBS RS wheels, a rear lip spoiler, a larger front air dam, larger front brakes and revised suspension with a 10 mm (0.4 in) lower ride height.

[9] The E24 series became a "world car" for the 1988 and 1989 model years, sporting the same bumpers and aerodynamic treatments as its high-performance counterparts across all markets.

According to BMW, the car can accelerate from 0–97 km/h (0–60 mph) in 5.8 and 6.8 seconds for the European and North American versions respectively.

[10][11] A top speed of 255 km/h (158 mph)[12] made the European M635CSi the second fastest BMW automobile ever built next to the M1.

[21] Weight reduction measures include a (coupe-only) carbon fibre roof (a first for regular production model last used on E46 M3 CSL),[22] thermoplastic quarter panels, aluminium doors, aluminium bonnet (hood) and a thermo-fibre plastic boot (trunk) lid.

[25] From 2009 a Competition Package is offered including front and rear suspension dropped by 12mm and 10mm respectively using wider rims mounting Pirelli P Zero Corsa tyres.

The interior uses a special trim of Merino leather in either light gray two-tone finish with contrasting stitching or black.

[27]The new model is based on the F12/F13/F06 6 Series, and shares its 7-speed dual clutch ("M-DCT") transmission and BMW S63 twin-turbo V8 engine with the F10 M5.

[33] The front of the car has a newly designed M kidney grille with an “M6” badge – a homage to the first generation of the M6.

With the 2014 Competition Package, the M6 comes with a sportier exhaust system with black tips, stiffer springs, dampers, and anti-roll bars, steering is more direct than the base M6, the twin-turbocharged V8 engine utilised in the M6 is updated and is rated at 423 kW (567 hp) and 680 N⋅m (502 lb⋅ft) of torque.

In May 2015, at Dingolfing, BMW works driver Jörg Müller drove the M6 GT3 on its first roll-out to contribute a milestone to its development, and later the M6 GT3 was revealed near the end of the year.

The M6 GT3 showed its success on its debut year in 2016 when Rowe Racing clinched overall victory at the 2016 24 Hours of Spa with BMW works drivers Philipp Eng, Maxime Martin, and Alexander Sims at the wheel.