DVSA Statistics
1999 Porsche 911
MOT Pass Rate & Pre-MOT Checklist
Used 1999 Porsche 911s usually pass their MOT, but around 1 in 7 still fail, most often for brake pipe damaged or excessively corroded, tyre tread depth not in accordance with the requirements and a suspension pin, bush or joint excessively worn. Based on 1,417 MOT tests from DVSA data, this page shows how this model performs and what to check before your test.
Pass Rate
Based on 1,417 DVSA anonymised MOT tests · About this data
Pass Rate
86%
Higher than average
Top Failure Reasons
Common MOT failures for this model
Parts Available
Brakes are a common wear item.
Based on DVSA statistics from 1,417 recorded tests.
Pre-MOT Checklist for 1999 Porsche 911
Based on common failure points for this model, check these items before your MOT:
- 1
Test brakes for effectiveness, pull, and unusual noises when driving
Brakes – Common fail on this model
- 2
Check tyre tread depth is at least 1.6mm across the central 3/4 of the tyre
Tyres – Common fail on this model
- 3
Listen for knocks or clunks when driving over bumps - bounce each corner
Suspension – Common fail on this model
- 4
Test all headlights work and aim is correct - check for condensation inside
Lighting – Common fail on this model
How Does This Compare to Other Years?
Previous Year
1998 Porsche 911
Based on 1,171 UK MOT tests
Next Year
2000 Porsche 911
Based on 1,042 UK MOT tests
Compare how MOT performance varies across Porsche 911 model years.
Why Trust This Data?
Official UK Government Source
This data comes from the UK's Driver and Vehicle Standards Agency (DVSA), the official body responsible for MOT testing standards. The anonymised MOT test data is published via data.gov.uk.
Understanding the Statistics
This page is based on 1,417 MOT tests from the 2023 DVSA dataset. Your 1999 Porsche 911 was 24 years old when this data was collected and is now 27 years old.
Sample Size
High confidence - 1,417 tests (statistically reliable)
Limitations
Statistics reflect average outcomes and don't account for maintenance history, mileage, or regional variations. Individual results will vary based on how well a vehicle has been maintained.
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Frequently Asked Questions
Is a 1999 Porsche 911 likely to fail its MOT?
Based on DVSA statistics, the 1999 Porsche 911 has a 86% 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 1999 Porsche 911?
The most common MOT failure reasons for a 1999 Porsche 911 are: brake pipe damaged or excessively corroded, tyre tread depth not in accordance with the requirements, a suspension pin, bush or joint excessively worn. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1999 Porsche 911 fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: brake pipe damaged or excessively corroded, tyre tread depth not in accordance with the requirements, a suspension pin, bush or joint excessively worn. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1999 Porsche 911s fail their MOT?
Around 14% of 1999 Porsche 911s fail their MOT test, meaning roughly 1 in 7 don't pass first time. The most common reasons are brake pipe damaged or excessively corroded and tyre tread depth not in accordance with the requirements. Pre-checking these items can significantly improve your chances.
What should I check before my 1999 Porsche 911 MOT?
Before your 1999 Porsche 911 MOT, check these commonly-failed items: brake pipe damaged or excessively corroded, tyre tread depth not in accordance with the requirements, a suspension pin, bush or joint excessively worn. 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 1999 Porsche 911 reliable for MOT?
With a 86% MOT pass rate, the 1999 Porsche 911 performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.