2008 · 16 years old at test · Petrol mostly

2008 Porsche 911 MOT pass rate and common faults

1,776 MOT tests in 2024. 87.4% passed first time, compared with 56.9% for all cars the same age.

154Well above average
Passed first time87.4%
Failed or needed repairs12.6%
Typical mileage at test56,000

Most common reasons for failing

Share of all 1,776 tests where this item caused a failure.

  1. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt1.9%
  2. Headlamp aim: too high1.4%
  3. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits1.0%
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords0.9%
  5. Rigid brake pipes: excessively corroded0.7%
  6. Tread depth below requirements of 1.6mm0.6%
    19 marked dangerous
  7. Tyres - condition: has ply or cords exposed0.6%
    20 marked dangerous
  8. Brake discs: significantly and obviously worn0.5%
  9. Washers: provides insufficient washer liquid0.4%

Problem areas

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

  1. Lights & electrics4.3%
  2. Tyres2.8%
  3. Body & chassis2.8%
  4. Brakes2.7%
  5. Emissions & leaks2.1%
  6. Suspension1.8%
  7. Visibility (wipers, screen, mirrors)1.7%
  8. Number plates & VIN0.5%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Brake discs: in such a condition that it is seriously weakened6.9%
  2. Tread depth below requirements of 1.6mm6.9%
  3. Tyres - condition: has a tear, caused by separation or partial failure of its structure5.7%
  4. Rigid brake pipes: excessively corroded5.5%
  5. Engine oil leaks: leaking excessively from engine3.7%

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: joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt. 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 911?

In 2024, 87.4% of 2008 Porsche 911 cars passed their MOT first time, across 1,776 tests. The average for all 16-year-old cars was 56.9%.

What are the most common MOT failures on a 2008 Porsche 911?

The most common failure reasons were joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt; headlamp aim: too high; catalyst emissions: lambda reading after 2nd fast idle outside specified limits. The biggest problem area was lights & electrics.

Is the 2008 Porsche 911 reliable at MOT time?

Its MOT Rank score is 154, which is well above average for a car of its age (100 means exactly average).