2005 · 19 years old at test · Petrol mostly

2005 Porsche Boxster MOT pass rate and common faults

3,197 MOT tests in 2024. 80.0% passed first time, compared with 56.5% for all cars the same age.

142Well above average
Passed first time80.0%
Failed or needed repairs20.0%
Typical mileage at test75,000

Most common reasons for failing

Share of all 3,197 tests where this item caused a failure.

  1. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits3.7%
  2. Coil spring: fractured or broken3.0%
  3. Rigid brake pipes: excessively corroded1.9%
  4. Exhaust system: has a major leak of exhaust gases1.1%
  5. Tread depth below requirements of 1.6mm1.0%
    61 marked dangerous
  6. Headlamp aim: too high0.9%
  7. Malfunction indicator lamp: inoperative or indicates a malfunction0.9%
  8. Shock absorbers: has a serious fluid leak0.9%
  9. Wipers: does not clear the windscreen effectively0.8%
  10. Headlamp aim: projected beam image is obviously incorrect0.8%

Problem areas

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

  1. Lights & electrics7.7%
  2. Brakes6.8%
  3. Emissions & leaks6.7%
  4. Suspension6.2%
  5. Tyres2.7%
  6. Visibility (wipers, screen, mirrors)1.8%
  7. Body & chassis1.7%
  8. Steering1.4%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Rigid brake pipes: excessively corroded16.2%
  2. Brake discs: in such a condition that it is seriously weakened12.1%
  3. Tread depth below requirements of 1.6mm10.3%
  4. Tyres - condition: has a tear, caused by separation or partial failure of its structure7.6%
  5. Non-component advisories: Play in steering rack inner joint(s)4.5%

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: catalyst emissions: lambda reading after 2nd fast idle outside specified limits. 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 2005 Porsche Boxster?

In 2024, 80.0% of 2005 Porsche Boxster cars passed their MOT first time, across 3,197 tests. The average for all 19-year-old cars was 56.5%.

What are the most common MOT failures on a 2005 Porsche Boxster?

The most common failure reasons were catalyst emissions: lambda reading after 2nd fast idle outside specified limits; coil spring: fractured or broken; rigid brake pipes: excessively corroded. The biggest problem area was lights & electrics.

Is the 2005 Porsche Boxster reliable at MOT time?

Its MOT Rank score is 142, which is well above average for a car of its age (100 means exactly average).