N20B20 engine
The N20B20 engine is fitted to 4 generation(s): BMW 5 Series, BMW 3 Series, BMW X1, BMW X3.
Common problems and what to check
Engine: BMW N20 (2.0 Turbo)
- timing chain guide wear on engines before ~2015
- oil leaks
What to check when buying: chain noise (whine) when cold; whether the chain was replaced.
Tip: The chain is the main thing to check when buying.