2008 · 16 years old at test · Petrol mostly

2008 Porsche Cayman MOT pass rate and common faults

873 MOT tests in 2024. 82.0% passed first time, compared with 56.9% for all cars the same age.

144Well above average
Passed first time82.0%
Failed or needed repairs18.0%
Typical mileage at test71,000

Most common reasons for failing

Share of all 873 tests where this item caused a failure.

  1. Position lamp: not working5.2%
  2. Coil spring: fractured or broken1.8%
  3. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits1.6%
  4. Rigid brake pipes: excessively corroded1.1%
  5. Suspension arms - ball joint: ball joint excessively worn1.1%
  6. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.0%
  7. Headlamp aim: projected beam image is obviously incorrect0.9%
  8. Stop lamp: not working0.9%
  9. Headlamp aim: too high0.9%

Problem areas

Failure items found per 100 tests, by part of the car.

  1. Lights & electrics11.0%
  2. Brakes5.6%
  3. Suspension4.7%
  4. Emissions & leaks3.3%
  5. Tyres3.0%
  6. Visibility (wipers, screen, mirrors)1.8%
  7. Body & chassis1.5%
  8. Steering0.9%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Brake discs: in such a condition that it is seriously weakened13.5%
  2. Rigid brake pipes: excessively corroded13.2%
  3. Tread depth below requirements of 1.6mm7.6%
  4. Non-component advisories: Play in steering rack inner joint(s)6.8%
  5. Tyres - condition: has a tear, caused by separation or partial failure of its structure6.2%

What this means if you are buying one

This model year does better than most cars its age, so it is a reasonable used buy on MOT record alone. Before buying, check the area that fails most: position lamp: not working. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

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Questions

What is the MOT pass rate for a 2008 Porsche Cayman?

In 2024, 82.0% of 2008 Porsche Cayman cars passed their MOT first time, across 873 tests. The average for all 16-year-old cars was 56.9%.

What are the most common MOT failures on a 2008 Porsche Cayman?

The most common failure reasons were position lamp: not working; coil spring: fractured or broken; catalyst emissions: lambda reading after 2nd fast idle outside specified limits. The biggest problem area was lights & electrics.

Is the 2008 Porsche Cayman reliable at MOT time?

Its MOT Rank score is 144, which is well above average for a car of its age (100 means exactly average).