BMW ≫ M4BMW M4 Competition convertible (2021, G83, second generation) photosby Joshua ThompsonThe 2021 BMW M4 Competition convertible has a more powerful 3L twin-turbo I6, but the fugliest grille in the world. ◄ PrevNext ►Credit: BMW 2021 BMW M4 Competition convertible It has a 3L twin-turbo I6 with 375kW (503hp) and 650Nm (479 lb-ft), 8-speed auto, AWD with RWD mode, and 0-100km/h in 3.7s. Tags:bmwcompetitionconvertibleg83m4second generation