2003 Mercedes 313cdi MOT Pass Rate
Pass rate for 313cdi models manufactured in 2003, based on 32 real MOT test results.
Data from official DVSA MOT testing records
2003 Mercedes 313cdi MOT Analysis
The 2003 Mercedes 313cdi has an MOT pass rate of 56.3% based on 32 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 146,041 miles on the odometer. With a 43.7% failure rate, the 2003 313cdi is rated as "Below Average" for MOT reliability.
The leading cause of MOT failure for the 2003 Mercedes 313cdi is Brakes, responsible for 12.5% of failures. 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 range from £150–400.
Top failures specific to 2003 models only. The overall 313cdi 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 | Brakes | 12.5% | 4 |
Failures per 10,000 Miles
avg. 146,041 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 |
|---|---|---|---|
| Brakes | 0.86 | 12.5% | 4 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2003 Mercedes 313cdi has an MOT pass rate of 56.3% based on 32 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 146,041 miles on the odometer. With a 43.7% failure rate, the 2003 313cdi is rated as "Below Average" for MOT reliability.
If you own or are considering buying a 2003 Mercedes 313cdi, budget for potential repairs before each MOT. Before your MOT, pay particular attention to brakes: 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). With an average mileage of 146,041 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Brakes — 12.5% of failures
Brakes issues account for 12.5% of MOT failures on 2003 Mercedes 313cdi models. 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).
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.