2017 · 7 years old at test · Petrol mostly

2017 Porsche 911 MOT pass rate and common faults

1,866 MOT tests in 2024. 94.1% passed first time, compared with 79.8% for all cars the same age.

118Well above average
Passed first time94.1%
Failed or needed repairs5.9%
Typical mileage at test23,000

Most common reasons for failing

Share of all 1,866 tests where this item caused a failure.

  1. Tyres - condition: has ply or cords exposed1.0%
    33 marked dangerous
  2. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.0%
  3. Tread depth below requirements of 1.6mm0.6%
    22 marked dangerous
  4. Registration plates: does not conform to the specified requirements0.5%
  5. Coil spring: fractured or broken0.4%
  6. Headlamp aim: too high0.4%
  7. Headlamp cleaning device: for LED or HID headlamp inoperative0.3%
  8. Washers: provides insufficient washer liquid0.2%
  9. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt0.2%

Problem areas

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

  1. Tyres2.8%
  2. Lights & electrics1.1%
  3. Number plates & VIN0.8%
  4. Visibility (wipers, screen, mirrors)0.5%
  5. Suspension0.5%
  6. Brakes0.5%
  7. Emissions & leaks0.2%
  8. Body & chassis0.2%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm8.2%
  2. Tyres - condition: has a tear, caused by separation or partial failure of its structure3.6%
  3. Non-component advisories: Nail in tyre2.0%
  4. Brake discs: in such a condition that it is seriously weakened1.6%
  5. Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm1.1%

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: tyres - condition: has ply or cords exposed. 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 2017 Porsche 911?

In 2024, 94.1% of 2017 Porsche 911 cars passed their MOT first time, across 1,866 tests. The average for all 7-year-old cars was 79.8%.

What are the most common MOT failures on a 2017 Porsche 911?

The most common failure reasons were tyres - condition: has ply or cords exposed; tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords; tread depth below requirements of 1.6mm. The biggest problem area was tyres.

Is the 2017 Porsche 911 reliable at MOT time?

Its MOT Rank score is 118, which is well above average for a car of its age (100 means exactly average).