1992 · 32 years old at test · Petrol mostly

1992 Porsche 911 MOT pass rate and common faults

200 MOT tests in 2024. 90.5% passed first time, compared with 68.8% for all cars the same age.

132Well above average
Passed first time90.5%
Failed or needed repairs9.5%
Typical mileage at test83,000

Most common reasons for failing

Share of all 200 tests where this item caused a failure.

  1. Rear fog lamp: not working1.0%
  2. Headlamp aim: too low1.0%
  3. Washers: provides insufficient washer liquid1.0%
  4. Headlamp aim: too high0.5%
  5. Catalyst emissions: carbon monoxide content at idle exceeds manufacturer's specified limits0.5%
  6. Headlamp: light source and lamp not compatible0.5%
  7. Rear fog lamp - switch: not operating in accordance with the requirements0.5%
  8. Position lamp: adversely affected by the operation of another lamp0.5%
  9. Position lamp: not working0.5%
  10. Individual direction indicators: not working0.5%

Problem areas

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

  1. Lights & electrics7.5%
  2. Emissions & leaks2.0%
  3. Visibility (wipers, screen, mirrors)1.5%
  4. Body & chassis1.5%
  5. Tyres1.0%
  6. Brakes1.0%
  7. Suspension0.5%
  8. Steering0.5%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Engine oil leaks: leaking excessively from engine12.0%
  2. Tread depth below requirements of 1.6mm4.0%
  3. Brake discs: in such a condition that it is seriously weakened3.5%
  4. Flexible brake hoses: ferrule excessively corroded3.0%
  5. Coil spring: corroded so that its cross sectional area is reduced and seriously weakened2.5%

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: rear fog 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 1992 Porsche 911?

In 2024, 90.5% of 1992 Porsche 911 cars passed their MOT first time, across 200 tests. The average for all 32-year-old cars was 68.8%.

What are the most common MOT failures on a 1992 Porsche 911?

The most common failure reasons were rear fog lamp: not working; headlamp aim: too low; washers: provides insufficient washer liquid. The biggest problem area was lights & electrics.

Is the 1992 Porsche 911 reliable at MOT time?

Its MOT Rank score is 132, which is well above average for a car of its age (100 means exactly average).