DVSA Statistics
2004 Mercedes Unclassified
MOT Pass Rate & Pre-MOT Checklist
Used 2004 Mercedes Unclassifieds usually pass their MOT, but around 1 in 5 still fail, most often for brake disc or drum excessively weakened, insecure or fractured, brake pipe damaged or excessively corroded and a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning. Based on 132 MOT tests from DVSA data, this page shows how this model performs and what to check before your test.
Pass Rate
Based on 132 DVSA anonymised MOT tests · About this data
Pass Rate
78%
About average
Top Failure Reasons
Common MOT failures for this model
Parts Available
Brakes are a common wear item.
Based on DVSA statistics from 132 recorded tests.
Pre-MOT Checklist for 2004 Mercedes Unclassified
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
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
2003 Mercedes Unclassified
Based on 130 UK MOT tests
Next Year
2005 Mercedes Unclassified
Based on 139 UK MOT tests
The 2004 model shows improvement over 2003 but the 2005 model has an even better pass rate.
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 132 MOT tests from the 2023 DVSA dataset. Your 2004 Mercedes Unclassified was 19 years old when this data was collected and is now 22 years old.
Sample Size
Moderate confidence - 132 tests (interpret with caution)
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 Unclassified.
Frequently Asked Questions
Is a 2004 Mercedes Unclassified likely to fail its MOT?
Based on DVSA statistics, the 2004 Mercedes Unclassified has a 78% 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 2004 Mercedes Unclassified?
The most common MOT failure reasons for a 2004 Mercedes Unclassified are: brake disc or drum excessively weakened, insecure or fractured, brake pipe damaged or excessively corroded, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 2004 Mercedes Unclassified fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: brake disc or drum excessively weakened, insecure or fractured, brake pipe damaged or excessively corroded, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 2004 Mercedes Unclassifieds fail their MOT?
Around 22% of 2004 Mercedes Unclassifieds fail their MOT test, meaning roughly 1 in 5 don't pass first time. The most common reasons are brake disc or drum excessively weakened, insecure or fractured and brake pipe damaged or excessively corroded. Pre-checking these items can significantly improve your chances.
What should I check before my 2004 Mercedes Unclassified MOT?
Before your 2004 Mercedes Unclassified MOT, check these commonly-failed items: brake disc or drum excessively weakened, insecure or fractured, brake pipe damaged or excessively corroded, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning. 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 2004 Mercedes Unclassified reliable for MOT?
With a 78% MOT pass rate, the 2004 Mercedes Unclassified performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.