2013 Mercedes-Benz A-class gets the AMG treatment

Mercedes-Benz has confirmed limited details about its most affordable performance model to date, the A45 AMG.

Set to go on sale in Europe in early 2013, the rival to the Audi RS3 and the BMW  M135i sits at the top of the third-generation A-class lineup. The price, although not yet officially revealed, is expected to start at about 50,000 euros, or $62,400 at current exchange rates).

One of three new compact models confirmed by AMG boss Ola Kallenius, the A45 AMG is not planned to be sold in North American. Its mechanical package will, however, appear in upcoming CLA45 AMG and CLA45 AMG Shooting Brake models that are set for U.S. sale in 2014.

The A45 AMG is the first series-production AMG model with a transversely mounted engine. The A45 AMG runs a heavily tuned version of Mercedes-Benz's turbocharged 2.0-liter four-cylinder gasoline engine from the standard A250 Sport, which goes on sale in Europe in September. With a specially developed free-flow cylinder head and unique induction system the engine, designated M270 Evo, is claimed to deliver 330 hp and what AMG describes as "maximum torque significantly above 400 Nm (295 lb-ft)."

Developed at AMG's Affalterbach engineering headquarters on the outskirts of Stuttgart, the new engine is the most powerful four-cylinder ever placed in a Mercedes-Benz production model.