Power for the M2 CS comes from a reworked version of M division’s S55 engine that uses a redesigned dual-branch exhaust system with controllable flaps for acoustics. The twin-turbo 3.0-litre petrol inline six runs the same state of tune as it does in the M4 Competition, developing 444bhp at 6250rpm. That’s a 40bhp increase on the M2 Competition and gives the M2 CS a power-to-weight ratio of 286bhp per tonne. Torque stays at 405lb ft.
The increased reserves are channelled through a standard six-speed manual or optional seven-speed dual-clutch gearbox and an electronically controlled Active M differential. BMW claims a 0-62mph time of 4.2sec for the manual-equipped M2 CS and 4.0sec for the dual-clutch version. By comparison, the 404bhp M2 Competition has an official 0-62mph time of 4.4sec in manual guise.
The M2 CS’s fourth-gear 50-75mph split is put at 3.3sec for the manual car and 3.1sec for the dual-clutch model. With a Driver’s Package, which includes 245/35-profile front and 265/35-profile rear 19in Michelin Pilot Sport Cup 2 tyres as standard, the top speed is raised to 174mph.
The manual M2 CS’s fuel consumption is 27.7mpg on the WLTP cycle, with CO2 emissions of 233g/km. The dual-clutch car returns 30.1mpg and 214g/km.
Among the chassis tweaks brought to the M2 CS is standard Adaptive M suspension with the choice of three driving modes: Comfort, Sport and Sport+. Also included are upgraded M Sport brakes, with 400mm steel discs and six-piston calipers at the front and 380mm steel discs and four-piston calipers at the rear.
Despite the carbonfibre body panels, it’s actually no lighter than the Competition unless you opt for the optional carbon ceramics, saving 22kg. This because it includes adaptive M suspension and M Sport seats as standard.