The F80 generation M3, which ended production in 2018, comes with 425 hp. Turbos are becoming more commonplace. So, a naturally aspirated straight-six making 240 hp might be thought of as old hat.

Compared to the standard F80 M3, the CS features an updated twin-turbo 3.0-liter straight-six delivering 454 hp and 443 lb-ft (600 Nm) of torque.

On K&N's dyno, the M3 put down 379 horsepower at 6600 rpm and 378 lb.-ft. of torque at 4300 rpm. BMW rates the engine at 425 hp at 5500 rpm and 406 lb.-ft. of torque at 1850 rpm.

BMW F80 M3 Gets Recaro Seats Published: 20 Aug 2014, 12:07 UTC • By: Gabriel Nica 9 photos ...