The BMW M4 is a high performance version of the BMW 4 Series marketed under the BMW M sub-brand
Part of the renumbering that splits the 3 Series coupé and convertible models from the 4 Series (to further differentiate it from the 3 Series), the M4 replaced the M3 coupé and convertible models. Upgrades over the standard BMW 4-Series include: a powerful and responsive, twin-turbocharged engine; improved handling, suspension, and braking systems; aerodynamic body enhancements; interior/exterior accents with the tri-colour "M" (Motorsport) badging; reduced weight compared to the standard 4 Series and its predecessor with an all-new stiffer chassis and extensive use of carbon fibre, especially on the roof of the car.
