REDLINE ALLEYPorsche 911 997 Carrera buying guide
2004 to 2012. A 997 suits a buyer who wants a usable modern 911; the 997.2 removes the IMS question.
Big jobs
- Bore scoring (997.1). Bore scoring affects a small share of 997.1 engines, more so the 3.8 Carrera S.
- IMS bearing (997.1). IMS failure is rare and much less likely than on the 996, but it can fail without warning. The 997.2 direct injection engine has no IMS.
- Over revving record. Specialists check for over revving with a diagnostic cable.
- PDK servicing (997.2). PDK needs fluid changes, and jerky shifting is a reason to walk away.
Workshop jobs
- Suspension knocks and exhaust studs. Knocking over bumps can be tired control arms or PASM dampers, and exhaust studs rust and seize.
- Clutch. A worn clutch gets heavy. They last around 50,000 miles in normal use.
Small jobs
- Coil packs. Coil packs last around 50,000 miles and their heat shields can work loose and rattle.
- Radiators blocked with leaves. Leaves collect in the front radiators.
Questions for the seller
- Is it a 997.1 or a 997.2?
- Has a borescope inspection been done on this engine?
- Can a specialist read the over rev log?
- Has the engine been rebuilt or had IMS work, and by whom?
- When was the clutch or PDK fluid last done?
Sources
Researched 2026-11-01. General guidance from owner and specialist sources. Check the specific car with an independent inspection.