BMW 2.0 N20B20 Engine

The BMW N20B20 is a 2.0-liter turbocharged inline-four engine, a key component of BMW’s “downsizing” strategy. It was designed to replace the naturally aspirated inline-six engines in many models, offering comparable performance with significantly better fuel efficiency. The N20B20 utilizes advanced features including a twin-scroll turbocharger , direct fuel injection , and VALVETRONIC (variable valve lift) to deliver strong, immediate torque from low RPMs. It was widely used in models like the 328i , 528i , and X3 .