M 133 – the strongest in its class

Introduced in 2013, M 133 engine immediately made history as the strongest 2 litre 4-cylinder petrol unit in its class. It was used in the third generation of A-Class Mercedes 45 AMG – ultra-sports version of the company’s smallest model.

Although small in size, M133 produces up to 360 hp (265 hp) of power, while fulfilling very restrictive norms. It belongs to BlueDirect group of engines whose fuel injection system was revolutionised to supply precisely measured amounts of fuel necessary to achieve required power at minimal emission. In the next years, M 133 was also used in bigger models of the competitive AMG group – such as medium coupé class CLA 45 AMG or compact GLA 45 AMG SUV.