IsItAGoodCar
Reliability Guide

Common Problems with the
2006–2008 Porsche Boxster / Cayman (987)

We've identified 4 known issues that can affect the 2006–2008 Porsche Boxster / Cayman (987). 2 of these are serious faults that could be expensive to repair.

4
Known Issues
2
Serious
2
Moderate
0
Minor

All Known Issues

Bore Scoring (987.1)

SeriousEngine

3.2 and 3.4 engines are at risk, requiring expensive specialist rebuilds.

Est. Repair Cost: £7,000–£10,000
Warning Signs:

Ticking at idle, Oil consumption, Sooty exhaust

What to Inspect:
  • Bore scope inspection is highly recommended
Verified by IsItAGoodCar Research Team

IMS Bearing (987.1)

SeriousEngine

The intermediate shaft bearing on early 987.1 models (2005-2008) shares the same risk as the 996/997.1. The 987.2 (2009+) eliminated the IMS bearing entirely.

Est. Repair Cost: £1,500–£2,500 (preventative)
Warning Signs:

Metal debris in oil filter, Oil leak near rear main seal, Sudden engine failure

What to Inspect:
  • Ask if IMS upgrade has been fitted
  • Inspect oil filter for metal particles
Verified by IsItAGoodCar Research Team

Radiator / Condenser Corrosion

ModerateCooling System

Front intakes collect leaves and road salt, rotting the cooling components.

Est. Repair Cost: £600–£1,200
Warning Signs:

Weak AC, Sweet coolant smell, Visible rot in front grilles

What to Inspect:
  • Inspect front grilles for debris
Verified by IsItAGoodCar Research Team

Clutch Wear (Manual Models)

ModerateGearbox & Transmission

The clutch on manual models can wear prematurely, especially with spirited driving. A stiff clutch pedal or clicking noises from the transmission are telltale signs.

Est. Repair Cost: £750–£1,200
Warning Signs:

Stiff clutch pedal, Gear change clicking, Slipping clutch under load

What to Inspect:
  • Test clutch bite point
  • Listen for clicking from rear of car during gear changes
Verified by IsItAGoodCar Research Team

Buying Tips for 2006–2008 Porsche Boxster / Cayman (987)

  • Focus on 987.2 models (2009+) if budget allows, as they lack the IMS bearing.
  • Inspect front radiators with a torch; they are prone to stone damage and rot.
  • Listen for "clonks" from the front suspension, often indicating worn coffin arms.