1993 · 31 years old at test · Petrol mostly

1993 Porsche 911 MOT pass rate and common faults

244 MOT tests in 2024. 88.5% passed first time, compared with 67.5% for all cars the same age.

131Well above average
Passed first time88.5%
Failed or needed repairs11.5%
Typical mileage at test89,000

Most common reasons for failing

Share of all 244 tests where this item caused a failure.

  1. Position lamp: not working3.3%
  2. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits1.6%
  3. Rear fog lamp: not working1.6%
  4. Catalyst emissions: carbon monoxide content after 2nd fast idle exceeds manufacturer's specified limits1.6%
  5. Headlamp aim: too low1.6%
  6. Catalyst emissions: carbon monoxide content at idle exceeds manufacturer's specified limits1.2%
  7. Headlamp aim: too high1.2%
  8. Stop lamp: not working1.2%
  9. Catalyst emissions: carbon monoxide content after 2nd fast idle exceeds default limits0.8%

Problem areas

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

  1. Lights & electrics11.9%
  2. Emissions & leaks8.2%
  3. Brakes1.6%
  4. Number plates & VIN0.8%
  5. Seat belts & airbags0.8%
  6. Visibility (wipers, screen, mirrors)0.8%
  7. Suspension0.8%
  8. Tyres0.4%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Engine oil leaks: leaking excessively from engine10.7%
  2. Tread depth below requirements of 1.6mm2.5%
  3. Brake discs: in such a condition that it is seriously weakened2.0%
  4. Non-component advisories: Fuel Pipe/s corroded1.2%
  5. Linkage ball joints: ball joint excessively worn1.2%

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 1993 Porsche 911?

In 2024, 88.5% of 1993 Porsche 911 cars passed their MOT first time, across 244 tests. The average for all 31-year-old cars was 67.5%.

What are the most common MOT failures on a 1993 Porsche 911?

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

Is the 1993 Porsche 911 reliable at MOT time?

Its MOT Rank score is 131, which is well above average for a car of its age (100 means exactly average).