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Porsche 911 seat belts and airbags problems

DVSA MOT tests 2022–2025 · 10,748 MOT tests · Updated

At 19 years, 0.4 in 100 MOT tests of the Porsche 911 failed on seat belts and airbags, against 2.9 for all class 4 vehicles the same age (all test years; 10,748 MOT tests) [1].

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  • Against all class 4 vehicles the same age: about average for all class 4 vehicles the same age (all test years), 47 MOT tests with a fail
  • By age: seen at 23 ages from 3 to 25 years, 174,386 MOT tests
  • Most common fail: Airbag (SRS) warning light on, 0.4 per 100 MOT tests

Figures are for the model as a whole, not for one car.

What the MOT tests show

What we know

0.4 fails per 100 MOT tests at 19 years, against 2.9 for all class 4 vehicles tested at 19 (all test years). That is about average.

Why it matters

A seat belts and airbags fail stops the car passing until it is fixed; the most common one is rated major by DVSA.

What to check

Pull every seat belt out fully and let it retract, check each buckle latches and releases, and make sure the airbag light goes out after start-up.

Porsche 911 seat belts and airbags fails by age

Porsche 911 seat belts and airbags fails per 100 MOT tests by ageSolid line: the Porsche 911. Dashed line: all cars the same age. The table below lists every value.01233 years: 0.0 per 100 (all cars 0.3), 8,273 MOT tests34 years: 0.1 per 100 (all cars 0.3), 8,028 MOT tests5 years: 0.1 per 100 (all cars 0.3), 8,072 MOT tests56 years: 0.1 per 100 (all cars 0.4), 8,228 MOT tests7 years: 0.1 per 100 (all cars 0.4), 7,582 MOT tests78 years: 0.1 per 100 (all cars 0.5), 6,995 MOT tests9 years: 0.2 per 100 (all cars 0.6), 6,387 MOT tests910 years: 0.1 per 100 (all cars 0.7), 6,228 MOT tests11 years: 0.2 per 100 (all cars 0.9), 5,750 MOT tests1112 years: 0.2 per 100 (all cars 1.0), 5,890 MOT tests13 years: 0.2 per 100 (all cars 1.2), 6,120 MOT tests1314 years: 0.2 per 100 (all cars 1.5), 6,470 MOT tests15 years: 0.4 per 100 (all cars 1.7), 7,697 MOT tests1516 years: 0.4 per 100 (all cars 2.1), 8,838 MOT tests17 years: 0.4 per 100 (all cars 2.5), 10,117 MOT tests1718 years: 0.4 per 100 (all cars 2.7), 10,680 MOT tests19 years: 0.4 per 100 (all cars 2.9), 10,748 MOT tests1920 years: 0.4 per 100 (all cars 3.1), 10,420 MOT tests21 years: 0.5 per 100 (all cars 3.1), 9,171 MOT tests2122 years: 0.5 per 100 (all cars 3.1), 7,606 MOT tests23 years: 0.7 per 100 (all cars 3.2), 6,184 MOT tests2324 years: 0.7 per 100 (all cars 3.2), 4,896 MOT tests25 years: 0.6 per 100 (all cars 3.3), 4,006 MOT tests25
Fails per 100 MOT tests by age, all first-use years pooled. Porsche 911 All class 4 vehicles the same age Shaded: over 18 years, survivors only.
AgeMOT testsFails per 100All class 4 vehicles the same age
38,2730.00.3
48,0280.10.3
58,0720.10.3
68,2280.10.4
77,5820.10.4
86,9950.10.5
96,3870.20.6
106,2280.10.7
115,7500.20.9
125,8900.21.0
136,1200.21.2
146,4700.21.5
157,6970.41.7
168,8380.42.1
1710,1170.42.5
1810,6800.42.7
19*10,7480.42.9
20*10,4200.43.1
21*9,1710.53.1
22*7,6060.53.1
23*6,1840.73.2
24*4,8960.73.2
25*4,0060.63.3

All first-use years of the Porsche 911 pooled at each age, against all class 4 vehicles at that age over all 2022–2025 test years. * Only survivors are still tested at this age.

What fails in the seat belts and airbags at 19 years

Fails

  • Airbag (SRS) warning light on: 0.4 fails per 100 MOT tests, all class 4 vehicles 1.4. Diagnose and fix airbag (SRS) warning: estimated £39–£317 (0.5–1.5 h at £78/h (ONS local-garage repair quotes, 1,058 quotes from 65 garages, Sep 2025 to Aug 2026) + parts £0–£200) Airbag (SRS) warning lamp indicates a fault MOT fail

Diagnose and fix airbag (SRS) warning cost

Repair figures are estimates, not quotes: how we estimate repair costs.

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  • Model risks for this year and fuel
  • What similar cars did at their next MOT
  • Repairs ahead
  • Viewing checklist

See a sample report

By engine and fuel

  • 3.8 petrol: 0.4 per 100 at 19 years, about average for petrol class 4 vehicles the same age (all test years; 4,317 MOT tests)
  • 3.6 petrol: 0.4 per 100 at 19 years, about average for petrol class 4 vehicles the same age (all test years; 6,181 MOT tests)

How to check on a test drive

Pull every seat belt out fully and let it retract, check each buckle latches and releases, and make sure the airbag light goes out after start-up.

Check one Porsche 911, not the average

The figures here describe Porsche 911 cars as a group. These free tools answer for one car. Each line says what the tool reads.

Other Porsche 911 problems

Seat belts and airbags on rival models

Questions people ask

Does the Porsche 911 have more seat belts and airbags problems than other cars?

0.4 in 100 MOT tests at 19 years, against 2.9 for all class 4 vehicles the same age: about average by our test (all test years; 10,748 MOT tests).

How common are Porsche 911 seat belts and airbags problems?

0.4 in 100 MOT tests at 19 years failed on seat belts and airbags, against 2.9 for all class 4 vehicles the same age (all test years; 10,748 MOT tests).

What is the most common Porsche 911 seat belts and airbags fail?

0.4 in 100 MOT tests at 19 years: Airbag (SRS) warning light on (41 MOT tests with it).

Sources

  1. Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 174,386 MOT tests. Accessed 7 Oct 2026.
  2. Office for National Statistics, Consumer price inflation, local price quotes (car repair items). ONS price quotes, series 610236. Accessed 7 Oct 2026.

Parts: against all class 4 vehicles at the same age, all 2022–2025 test years pooled, not adjusted for mileage. Breakdowns and non-MOT faults are not in this data. How we compare