The Competition powertrain in the new M3 Touring features a turbocharged I-6 engine good for 510 horsepower and 479 lb-ft of torque, linked to an 8-speed transmission. The engine features ...
One could argue the new M3 CS goes far enough, with a turbocharged S58 3.0-liter inline-six engine with a forged lightweight crankshaft, 3D-printed cylinder head core, and custom oil supply and ...