DVSA Statistics
1991 Porsche 928 S
MOT Pass Rate & Pre-MOT Checklist
Used 1991 Porsche 928 Ss usually pass their MOT, but around 1 in 6 still fail, most often for fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, the aim of a headlamp is not within limits laid down in the requirements and a shock absorber damaged to the extent that it does not function or showing signs of severe leakage. Based on 60 MOT tests from DVSA data, this page shows how this model performs and what to check before your test.
Pass Rate
Based on 60 DVSA anonymised MOT tests · About this data
Pass Rate
83.3%
Higher than average
Top Failure Reasons
Common MOT failures for this model
Quick DIY Fix
Headlight bulbs are a common MOT fail. Easy DIY replacement.
Based on DVSA statistics from 60 recorded tests.
Pre-MOT Checklist for 1991 Porsche 928 S
Based on common failure points for this model, check these items before your MOT:
- 1
Test all headlights work and aim is correct - check for condensation inside
Lighting – Common fail on this model
- 2
Push down on each corner and release - car should bounce once only
Suspension – Common fail on this model
- 3
Check windscreen for chips or cracks in the driver view zone (Zone A)
Visibility – Common fail on this model
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Check your specific vehicle for outstanding advisories or recalls. Get a personalized risk report for your exact Porsche 928 S.
Frequently Asked Questions
Is a 1991 Porsche 928 S likely to fail its MOT?
Based on DVSA statistics, the 1991 Porsche 928 S has a 83.3% MOT pass rate. This is above average, indicating good reliability for a vehicle of this age.
What are the most common MOT failures on a 1991 Porsche 928 S?
The most common MOT failure reasons for a 1991 Porsche 928 S are: fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, the aim of a headlamp is not within limits laid down in the requirements, a shock absorber damaged to the extent that it does not function or showing signs of severe leakage. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1991 Porsche 928 S fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, the aim of a headlamp is not within limits laid down in the requirements, a shock absorber damaged to the extent that it does not function or showing signs of severe leakage. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1991 Porsche 928 Ss fail their MOT?
Around 17% of 1991 Porsche 928 Ss fail their MOT test, meaning roughly 1 in 6 don't pass first time. The most common reasons are fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users and the aim of a headlamp is not within limits laid down in the requirements. Pre-checking these items can significantly improve your chances.
What should I check before my 1991 Porsche 928 S MOT?
Before your 1991 Porsche 928 S MOT, check these commonly-failed items: fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, the aim of a headlamp is not within limits laid down in the requirements, a shock absorber damaged to the extent that it does not function or showing signs of severe leakage. Most are visual checks you can do at home – look for worn tyres, test all lights work, and check for obvious damage or leaks.
Is the 1991 Porsche 928 S reliable for MOT?
With a 83.3% MOT pass rate, the 1991 Porsche 928 S performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.