- Engine / equipment
- N20 / N26 and other BMW engines with an aluminium oil filter housing
- Period mentioned
- 2011–2017
- Symptoms
- Oil leak at the front of the engine, oil on the auxiliary belt (squeal or burning smell), sometimes oil and coolant mixing.
- Possible cause described
- The oil filter housing gasket hardens with heat cycles and cracks. Together with the valve cover gasket, it is the most common BMW oil leak.
- Check for the garage
- Visual inspection of the filter housing area, the belt and the bottom of the engine.
- Cost cited in the source
- €400–900A rough figure from the original database, not an up-to-date quote.
Mileage cited in the database: 80,000–130,000 km. This is not a maintenance interval and does not predict a failure.