2011 · 13 years old at test · Petrol mostly

2011 Porsche 911 MOT pass rate and common faults

1,215 MOT tests in 2024. 92.0% passed first time, compared with 61.8% for all cars the same age.

149Well above average
Passed first time92.0%
Failed or needed repairs8.0%
Typical mileage at test42,000

Most common reasons for failing

Share of all 1,215 tests where this item caused a failure.

  1. Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt1.4%
  2. Headlamp aim: too high1.2%
  3. Tyres - condition: has ply or cords exposed1.0%
    19 marked dangerous
  4. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords0.6%
  5. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits0.5%
  6. Coil spring: fractured or broken0.2%
  7. Wipers: does not clear the windscreen effectively0.2%
  8. Tyres - condition: has a bulge, caused by separation or partial failure of its structure0.2%
    3 marked dangerous
  9. Rear fog lamp: not working0.2%

Problem areas

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

  1. Lights & electrics2.9%
  2. Tyres2.2%
  3. Body & chassis1.6%
  4. Brakes1.1%
  5. Emissions & leaks1.0%
  6. Suspension0.7%
  7. Visibility (wipers, screen, mirrors)0.5%
  8. Number plates & VIN0.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm6.2%
  2. Brake discs: in such a condition that it is seriously weakened4.0%
  3. Tyres - condition: has a tear, caused by separation or partial failure of its structure3.6%
  4. Rigid brake pipes: excessively corroded3.0%
  5. Suspension arms - ball joint: ball joint excessively worn1.9%

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: joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt. 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 2011 Porsche 911?

In 2024, 92.0% of 2011 Porsche 911 cars passed their MOT first time, across 1,215 tests. The average for all 13-year-old cars was 61.8%.

What are the most common MOT failures on a 2011 Porsche 911?

The most common failure reasons were joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt; headlamp aim: too high; tyres - condition: has ply or cords exposed. The biggest problem area was lights & electrics.

Is the 2011 Porsche 911 reliable at MOT time?

Its MOT Rank score is 149, which is well above average for a car of its age (100 means exactly average).