DVSA Statistics
1977 Mercedes 230.4
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1977 Mercedes 230.4 (only 2 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 2 DVSA anonymised MOT tests · About this data
Pass Rate
50%
Lower than average
Limited data available for this model; results may be less representative.
Top Failure Reasons
Common MOT failures for this model
Parts Available
Brakes are a common wear item.
Based on DVSA statistics from 2 recorded tests.
Pre-MOT Checklist for 1977 Mercedes 230.4
Based on common failure points for this model, check these items before your MOT:
- 1
Ensure engine is at operating temperature before test - take a good run beforehand
Emissions – Common fail on this model
- 2
Check for excessive play in steering wheel - should be minimal free movement
Steering – Common fail on this model
- 3
Test brakes for effectiveness, pull, and unusual noises when driving
Brakes – Common fail on this model
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 2 MOT tests from the 2023 DVSA dataset. Your 1977 Mercedes 230.4 was 46 years old when this data was collected and is now 49 years old.
Sample Size
Limited data - 2 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 Mercedes 230.4.
Frequently Asked Questions
Is a 1977 Mercedes 230.4 likely to fail its MOT?
Based on DVSA statistics, the 1977 Mercedes 230.4 has a 50% MOT pass rate. This is below average, so extra pre-MOT checks are recommended.
What are the most common MOT failures on a 1977 Mercedes 230.4?
The most common MOT failure reasons for a 1977 Mercedes 230.4 are: emissions levels exceed default limits, the engine is idling at a speed clearly above its normal idling speed, free play in the steering, measured at the rim of the steering wheel is excessive. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1977 Mercedes 230.4 fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: emissions levels exceed default limits, the engine is idling at a speed clearly above its normal idling speed, free play in the steering, measured at the rim of the steering wheel is excessive. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1977 Mercedes 230.4s fail their MOT?
Around 50% of 1977 Mercedes 230.4s fail their MOT test, meaning roughly 1 in 2 don't pass first time. The most common reasons are emissions levels exceed default limits and the engine is idling at a speed clearly above its normal idling speed. Pre-checking these items can significantly improve your chances.
What should I check before my 1977 Mercedes 230.4 MOT?
Before your 1977 Mercedes 230.4 MOT, check these commonly-failed items: emissions levels exceed default limits, the engine is idling at a speed clearly above its normal idling speed, free play in the steering, measured at the rim of the steering wheel is excessive. 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 1977 Mercedes 230.4 reliable for MOT?
With a 50% MOT pass rate, the 1977 Mercedes 230.4 performs below average compared to typical vehicles. Extra attention to pre-MOT checks is recommended for this model.