DVSA Statistics
1975 Porsche 911
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1975 Porsche 911 (only 21 tests in our DVSA dataset), so these figures are a rough guide. We still highlight common failure items below so you can check before your MOT.
Pass Rate
Based on 21 DVSA anonymised MOT tests · About this data
Pass Rate
90.5%
Higher than average
Limited data available for this model; results may be less representative.
Top Failure Reasons
Common MOT failures for this model
Quick DIY Fix
Brake light bulbs are easy to replace yourself.
Based on DVSA statistics from 21 recorded tests.
Pre-MOT Checklist for 1975 Porsche 911
Based on common failure points for this model, check these items before your MOT:
- 1
Check brake lights illuminate when pedal is pressed - have someone help you check
Lighting – Common fail on this model
- 2
Test brakes for effectiveness, pull, and unusual noises when driving
Brakes – 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
- 4
Ensure engine is at operating temperature before test - take a good run beforehand
Emissions – Common fail on this model
Do you own this car?
Check your specific vehicle for outstanding advisories or recalls. Get a personalized risk report for your exact Porsche 911.
Frequently Asked Questions
Is a 1975 Porsche 911 likely to fail its MOT?
Based on DVSA statistics, the 1975 Porsche 911 has a 90.5% 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 1975 Porsche 911?
The most common MOT failure reasons for a 1975 Porsche 911 are: stop lamps all missing or inoperative, significant brake effort recorded with no brake applied indicating a binding brake, windscreen washers not working or not providing sufficient fluid to clear the windscreen. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1975 Porsche 911 fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: stop lamps all missing or inoperative, significant brake effort recorded with no brake applied indicating a binding brake, windscreen washers not working or not providing sufficient fluid to clear the windscreen. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1975 Porsche 911s fail their MOT?
Around 10% of 1975 Porsche 911s fail their MOT test, meaning roughly 1 in 10 don't pass first time. The most common reasons are stop lamps all missing or inoperative and significant brake effort recorded with no brake applied indicating a binding brake. Pre-checking these items can significantly improve your chances.
What should I check before my 1975 Porsche 911 MOT?
Before your 1975 Porsche 911 MOT, check these commonly-failed items: stop lamps all missing or inoperative, significant brake effort recorded with no brake applied indicating a binding brake, windscreen washers not working or not providing sufficient fluid to clear the windscreen. 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 1975 Porsche 911 reliable for MOT?
With a 90.5% MOT pass rate, the 1975 Porsche 911 performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.