The story
History: facts, each with its source
BMW built the N52 from 2004 to 2015. Its block is a magnesium and aluminium composite, Valvetronic varies the valve lift and VANOS the timing on both cams. The turbo N20 four began replacing it in 2011.1
BMW Tuning says the N52 has proved more reliable than the turbo N54, since it has no high-pressure fuel pump or direct injection.2