2005 · 19 years old at test · Petrol mostly

2005 Porsche 911 MOT pass rate and common faults

2,657 MOT tests in 2024. 84.6% passed first time, compared with 56.5% for all cars the same age.

150Well above average
Passed first time84.6%
Failed or needed repairs15.4%
Typical mileage at test70,000

Most common reasons for failing

Share of all 2,657 tests where this item caused a failure.

  1. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits2.7%
  2. Headlamp aim: too high1.7%
  3. Rigid brake pipes: excessively corroded1.2%
  4. Tyres - condition: has ply or cords exposed1.0%
    37 marked dangerous
  5. Coil spring: fractured or broken0.9%
  6. Position lamp: not working0.8%
  7. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords0.7%
  8. Tread depth below requirements of 1.6mm0.6%
    27 marked dangerous
  9. Malfunction indicator lamp: inoperative or indicates a malfunction0.6%

Problem areas

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

  1. Lights & electrics6.9%
  2. Emissions & leaks4.9%
  3. Brakes4.6%
  4. Tyres3.0%
  5. Suspension2.1%
  6. Body & chassis1.5%
  7. Visibility (wipers, screen, mirrors)1.5%
  8. Steering0.6%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Rigid brake pipes: excessively corroded10.6%
  2. Brake discs: in such a condition that it is seriously weakened9.2%
  3. Tread depth below requirements of 1.6mm9.0%
  4. Tyres - condition: has a tear, caused by separation or partial failure of its structure5.4%
  5. Engine oil leaks: leaking excessively from engine3.2%

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: 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 911?

In 2024, 84.6% of 2005 Porsche 911 cars passed their MOT first time, across 2,657 tests. The average for all 19-year-old cars was 56.5%.

What are the most common MOT failures on a 2005 Porsche 911?

The most common failure reasons were catalyst emissions: lambda reading after 2nd fast idle outside specified limits; headlamp aim: too high; rigid brake pipes: excessively corroded. The biggest problem area was lights & electrics.

Is the 2005 Porsche 911 reliable at MOT time?

Its MOT Rank score is 150, which is well above average for a car of its age (100 means exactly average).