The BMW N20 is a turbocharged four-cylinder petrol engine which replaced the N53 (or BMW N52 in some markets) and was produced from 2011-2017.

Although the N20 is a four-cylinder engine, it is considered a replacement for the naturally aspirated six-cylinder N52/N53 because it powers equivalent models, producing similar horsepower to the N52/N53 with greater low-rpm torque and better efficiency. BMW petrol engine rebuild & timing chain repair various models from 2001 thru 2015 - engine codes N20, N42, N43