DVSA Statistics
1978 Vauxhall Cavalier
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1978 Vauxhall Cavalier (only 7 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 7 DVSA anonymised MOT tests · About this data
Pass Rate
85.7%
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
Headlight bulbs are a common MOT fail. Easy DIY replacement.
Based on DVSA statistics from 7 recorded tests.
Pre-MOT Checklist for 1978 Vauxhall Cavalier
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
Listen for knocks or clunks when driving over bumps - bounce each corner
Suspension – Common fail on this model
How Does This Compare to Other Years?
Previous Year
1977 Vauxhall Cavalier
Based on 3 UK MOT tests
Next Year
1979 Vauxhall Cavalier
Based on 12 UK MOT tests
Compare how MOT performance varies across Vauxhall Cavalier 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 7 MOT tests from the 2023 DVSA dataset. Your 1978 Vauxhall Cavalier was 45 years old when this data was collected and is now 48 years old.
Sample Size
Limited data - 7 tests (use as rough guide only)
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.
Do you own this car?
Check your specific vehicle for outstanding advisories or recalls. Get a personalized risk report for your exact Vauxhall Cavalier.
Frequently Asked Questions
Is a 1978 Vauxhall Cavalier likely to fail its MOT?
Based on DVSA statistics, the 1978 Vauxhall Cavalier has a 85.7% 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 1978 Vauxhall Cavalier?
The most common MOT failure reasons for a 1978 Vauxhall Cavalier are: a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, a suspension component excessively damaged or corroded. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1978 Vauxhall Cavalier fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, a suspension component excessively damaged or corroded. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1978 Vauxhall Cavaliers fail their MOT?
Around 14% of 1978 Vauxhall Cavaliers fail their MOT test, meaning roughly 1 in 7 don't pass first time. The most common reasons are a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led and fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users. Pre-checking these items can significantly improve your chances.
What should I check before my 1978 Vauxhall Cavalier MOT?
Before your 1978 Vauxhall Cavalier MOT, check these commonly-failed items: a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, a suspension component excessively damaged or corroded. 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 1978 Vauxhall Cavalier reliable for MOT?
With a 85.7% MOT pass rate, the 1978 Vauxhall Cavalier performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.