Powering the range-topping M135i is BMW's sweet 3.0-liter inline-six, with 320 hp being sent to the rear wheels through either a six-speed manual or eight-speed automatic.

As a reminder, the 2022 BMW M135i is powered by a 2.0-liter turbocharged four-cylinder engine punching out 302 hp and 332 lb-ft (450 Nm) of torque.

The BMW M135i Concept packs more than 300 horsepower and is destined for production. Read on to learn more on the BMW Concept M135i set to debut at the 2012 Geneva Auto Show brought to you by the ...