Mercedes Ml 350 Cdi MOT Pass Rate
Overall pass rate across all manufacture years, based on 42 real MOT test results. Failure rate: 21.4%.
Data from official DVSA MOT testing records
Mercedes Ml 350 Cdi MOT Reliability Overview
The Mercedes Ml 350 Cdi is a rare vehicle in the UK, with 42 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 78.6% and a failure rate of 21.4%, which is well above the UK average of approximately 37%.
Based on this data, the Mercedes Ml 350 Cdi earns a "Excellent" reliability rating. The average Mercedes Ml 350 Cdi presents for MOT with approximately 71,967 miles on the clock.
The most common MOT failure for the Mercedes Ml 350 Cdi is Tyres, affecting 28.6% of all tests. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. The second most common issue is Brakes at 16.7%. Non-component advisories rounds out the top three at 11.9%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Tyres | 28.6% | 12 |
| 2 | Brakes | 16.7% | 7 |
| 3 | Non-component Advisories | 11.9% | 5 |
| 4 | Suspension | 9.5% | 4 |
| 5 | Lamps, Reflectors And Electrical Equipment | 7.2% | 3 |
| 6 | Driver's View Of The Road | 4.8% | 2 |
| 7 | Noise, Emissions And Leaks | 2.4% | 1 |
Failures per 10,000 Miles
avg. 71,967 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Tyres | 3.97 | 28.6% | 12 |
| Brakes | 2.32 | 16.7% | 7 |
| Non-component advisories | 1.65 | 11.9% | 5 |
| Suspension | 1.32 | 9.5% | 4 |
| Lamps & Electrical | 0.99 | 7.2% | 3 |
| Visibility | 0.66 | 4.8% | 2 |
| Noise, emissions and leaks | 0.33 | 2.4% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mercedes Ml 350 Cdi has 71,967 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Mercedes Ml 350 Cdi has a mileage-adjusted failure rate of 2.97% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Mercedes Ml 350 Cdi MOT Data
The Mercedes Ml 350 Cdi is a rare vehicle in the UK, with 42 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 78.6% and a failure rate of 21.4%, which is well above the UK average of approximately 37%.
For Mercedes Ml 350 Cdi owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on tyres and brakes for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Ml 350 Cdi is likely to perform.
Tyres — 28.6% of failures
Tyres issues account for 28.6% of MOT failures on the Mercedes Ml 350 Cdi. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Brakes — 16.7% of failures
Brakes issues account for 16.7% of MOT failures on the Mercedes Ml 350 Cdi. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Non-component advisories — 11.9% of failures
Non-component advisories issues account for 11.9% of MOT failures on the Mercedes Ml 350 Cdi. Non-component advisories issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Frequently Asked Questions
What is the MOT pass rate for the Mercedes Ml 350 Cdi?
Based on 42 (based on limited data) MOT tests in our database, the Mercedes Ml 350 Cdi has an overall pass rate of 78.6% (21.4% fail rate).
What are the most common MOT failures on a Mercedes Ml 350 Cdi?
The top 3 reasons a Mercedes Ml 350 Cdi fails its MOT are: 1. Tyres (28.6%), 2. Brakes (16.7%), 3. Non-component advisories (11.9%). Check these areas before booking your MOT.
Is the Mercedes Ml 350 Cdi reliable?
With a 21.4% MOT failure rate, the Ml 350 Cdi is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mercedes Ml 350 Cdi?
Based on failure data, focus on: Tyres (28.6%); Brakes (16.7%); Non-component advisories (11.9%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.