Mercedes A45 S AMG - strongest turbocharged four-cylinder engine ever!
AMG has done it again! They've created the most powerful turbocharged four-cylinder engine ever. The Mercedes A45 S AMG is producing 421 HP from just 2 liters of engine capacity for a car, which you can use as your daily driver.
AMG pulled that off by fitting the engine, internally called M 139, with a huge twin scroll turbocharger which produces 2,1 bar in stock.