The N53 is notably one of bmw's less reliable engines. Everything that goes wrong with it is tedious to debug and ends up hugely expensive to fix because you al

The N53 is notably one of bmw's less reliable engines. Everything that goes wrong with it is tedious to debug and ends up hugely expensive to fix because you always end up needing to replace several pricey injectors. Then it breaks again later. The N52 seems rather better, as all its common faults are relatively cheap to fix.