2020 · 4 years old at test · Petrol mostly

2020 Porsche 911 MOT pass rate and common faults

1,556 MOT tests in 2024. 95.2% passed first time, compared with 86.9% for all cars the same age.

110Well above average
Passed first time95.2%
Failed or needed repairs4.8%
Typical mileage at test15,000

Most common reasons for failing

Share of all 1,556 tests where this item caused a failure.

  1. Tread depth below requirements of 1.6mm1.1%
    60 marked dangerous
  2. Registration plates: does not conform to the specified requirements0.8%
  3. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords0.7%
  4. Tyres - condition: has a bulge, caused by separation or partial failure of its structure0.4%
    12 marked dangerous
  5. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits0.3%
  6. Tyres - condition: has ply or cords exposed0.3%
    7 marked dangerous
  7. Malfunction indicator lamp: inoperative or indicates a malfunction0.2%
  8. Headlamp aim: too high0.2%
  9. Tyre pressure monitoring system: malfunctioning or obviously inoperative0.1%

Problem areas

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

  1. Tyres2.8%
  2. Number plates & VIN1.1%
  3. Emissions & leaks0.7%
  4. Lights & electrics0.7%
  5. Brakes0.4%
  6. Body & chassis0.1%
  7. Visibility (wipers, screen, mirrors)0.1%
  8. Steering0.1%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm5.6%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure4.0%
  3. Non-component advisories: Nail in tyre2.6%
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.5%
  5. Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm0.8%

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: tread depth below requirements of 1.6mm. 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 2020 Porsche 911?

In 2024, 95.2% of 2020 Porsche 911 cars passed their MOT first time, across 1,556 tests. The average for all 4-year-old cars was 86.9%.

What are the most common MOT failures on a 2020 Porsche 911?

The most common failure reasons were tread depth below requirements of 1.6mm; registration plates: does not conform to the specified requirements; tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords. The biggest problem area was tyres.

Is the 2020 Porsche 911 reliable at MOT time?

Its MOT Rank score is 110, which is well above average for a car of its age (100 means exactly average).