IsItAGoodCar
Reliability Guide

Common Problems with the
2011 Porsche 911 (997)

We've identified 2 known issues that can affect the 2011 Porsche 911 (997). 1 of these are serious faults that could be expensive to repair.

2
Known Issues
1
Serious
1
Moderate
0
Minor

All Known Issues

PDK Distance Sensor Failure

SeriousGearbox & Transmission

An internal sensor in the PDK gearbox fails, rendering the car undriveable. Porsche dealers typically quote £20,000–£30,000 for a full gearbox replacement as they do not repair internal parts. However, UK specialists like Ninemeister and Zuffenhaus can now repair the unit by replacing the faulty component with an upgraded T-Design9 sensor.

Est. Repair Cost: £4,500–£7,000 (Specialist Repair)
Warning Signs:

Transmission fault warning, Emergency transmission mode, Loss of reverse/even gears, Fault codes P1731, P1732, P1735

What to Inspect:
  • Check for smooth shifts
  • Scan for PDK-specific fault codes
  • Ask if the gearbox has already been repaired by a specialist
Verified by IsItAGoodCar Research Team

Cracked Ignition Coil Packs

ModerateEngine

The coil packs on 997 engines are prone to cracking and failing, causing misfires. A relatively inexpensive fix but common across all variants.

Est. Repair Cost: £200–£400
Warning Signs:

Engine misfire, Check engine light, Rough idle, Hesitation under acceleration

What to Inspect:
  • Scan for misfire codes
  • Inspect coil packs for visible cracks
Verified by IsItAGoodCar Research Team

Buying Tips for 2011 Porsche 911 (997)

  • On 997.1 models, check if an IMS retrofit or a larger factory bearing is fitted.
  • Look for sootier residue on the left exhaust tip, which can be an early sign of bore scoring.
  • Verify the operation of the PASM dampers; leaking struts are common on S models.
Check a 2011 Porsche 911 (997) by Registration