Overall the M3 CS tops the scales at 1585kg, 25kg more than an M3 Comp Pack, although the new CS is only available with the heavier seven-speed M double-clutch gearbox. Beneath the carbon ...
The 3.0-liter inline-six's two turbochargers get a boost from 24.7 to 30.5 psi, and some extra tuning results in 40 more horsepower than the M3 Comp and 70 more than the standard M3. The final ...