Piston oil ring failure leading to severe oil consumption, misfires, or complete engine seizure due to improper factory heat treatment.
- Typically appears
- 15,000-40,000 miles
- What to inspect
- Pull the dipstick to check oil level and condition. Listen for abnormal bottom-end knocking when revving from cold. Check history for the piston ring recall.
- Typical repair
- Oil leak trace & seal / gasket · £180–£700
