N20/N26 timing chain and guide wear (earlier builds most affected).
- Typically appears
- 70,000+ miles
- What to inspect
- Listen for a rattle on cold start; ask about chain/guide replacement history.

A 2016 BMW 3 Series is now 10 years old, so an average example has covered around 135,000 miles. A mid-run car · most launch faults had been addressed by this point, and wear items are the main risk at this age. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2016 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
The 2016 BMW 3 Series is 10 years old, so an average example has covered roughly 135,000 miles. At that mileage 4 of the documented faults are already due, so check those first.
Documented onset mileage is at or below the ~135k miles an average 2016 car has covered.
N20/N26 timing chain and guide wear (earlier builds most affected).
Oil filter housing gasket and valve cover gasket oil leaks.
Electric water pump and thermostat failure.
Carbon buildup on intake valves (direct injection).
Generate a tickable pre-purchase checklist for this exact year, mileage and variant · add photos and notes as you inspect.
Check this exact carIt can be, with disciplined maintenance. Budget for cooling-system and gasket work that's normal for the platform.
The 328i (N20/N26) is common; the 335i/340i inline-six is stronger and, in the B58 340i, very robust.
Timing chain (early N20), water pump/thermostat, and oil leaks are the ones to budget for.