Mercedes-Benz has unveiled the A45 AMG ahead of the car’s Geneva Motor Show debut. Competing against the entry-level luxury car the Audi S3, the A45 AMG won’t be sold in the US. However, the engine of the vehicle will make it into the CLA45 AMG and they will share the same platform.

We got our first look at the A45 AMG last November, when Mercedes released photos of a lightly camouflaged prototype. It was the exact opposite of what we normally expect from AMG, Mercedes’ performance division.

AMG is known for building big, unruly sedans and sports cars with massive V8 or V12 engines. The A45, though is a small hatchback, with a 2.0-liter turbocharged four-cylinder engine under the hood.

Still, this is AMG we’re talking about. That engine has 360 horsepower and 331 pound-feet of torque, significantly more than the 330 hp and 295 lb-ft suggested in early reports. Mercedes says this engine is the most powerful mass-produced four-cylinder in the world.

Harnessing all of that power is a seven-speed dual-clutch automatic transmission and a revised version of Mercedes’ 4Matic all-wheel drive system.

Tom Cooper | Elite.