2009 Mercedes Ml320cdi MOT Pass Rate
Pass rate for Ml320cdi models manufactured in 2009, based on 32 real MOT test results.
Data from official DVSA MOT testing records
2009 Mercedes Ml320cdi MOT Analysis
The 2009 Mercedes Ml320cdi has an MOT pass rate of 68.8% based on 32 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 80,658 miles on the odometer. With a 31.2% failure rate, the 2009 Ml320cdi is rated as "Good" for MOT reliability.
The leading cause of MOT failure for the 2009 Mercedes Ml320cdi is Suspension, responsible for 6.3% of failures. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs range from £200–500. Tyres is the second most common issue at 6.3%. Lamps, reflectors and electrical equipment follows at 3.1%.
Top failures specific to 2009 models only. The overall Ml320cdi page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Suspension | 6.3% | 2 |
| 2 | Tyres | 6.3% | 2 |
| 3 | Lamps, Reflectors And Electrical Equipment | 3.1% | 1 |
Failures per 10,000 Miles
avg. 80,658 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 |
|---|---|---|---|
| Suspension | 0.77 | 6.3% | 2 |
| Tyres | 0.77 | 6.3% | 2 |
| Lamps & Electrical | 0.39 | 3.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2009 Mercedes Ml320cdi has an MOT pass rate of 68.8% based on 32 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 80,658 miles on the odometer. With a 31.2% failure rate, the 2009 Ml320cdi is rated as "Good" for MOT reliability.
If you own or are considering buying a 2009 Mercedes Ml320cdi, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to suspension: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks. With an average mileage of 80,658 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Suspension — 6.3% of failures
Suspension issues account for 6.3% of MOT failures on 2009 Mercedes Ml320cdi models. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Tyres — 6.3% of failures
Tyres issues account for 6.3% of MOT failures on 2009 Mercedes Ml320cdi models. 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.
Lamps, reflectors and electrical equipment — 3.1% of failures
Lamps, reflectors and electrical equipment issues account for 3.1% of MOT failures on 2009 Mercedes Ml320cdi models. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.