2005 Mercedes 300 MOT Pass Rate
Pass rate for 300 models manufactured in 2005, based on 36 real MOT test results.
Data from official DVSA MOT testing records
2005 Mercedes 300 MOT Analysis
The 2005 Mercedes 300 has an MOT pass rate of 83.3% based on 36 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 111,605 miles on the odometer. With a 16.7% failure rate, the 2005 300 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2005 Mercedes 300 is Brakes, responsible for 5.6% 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. Driver's View of the Road is the second most common issue at 2.8%.
Top failures specific to 2005 models only. The overall 300 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 | 5.6% | 2 |
| 2 | Driver's View Of The Road | 2.8% | 1 |
Failures per 10,000 Miles
avg. 111,605 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 | 0.50 | 5.6% | 2 |
| Visibility | 0.25 | 2.8% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2005 Mercedes 300 has an MOT pass rate of 83.3% based on 36 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 111,605 miles on the odometer. With a 16.7% failure rate, the 2005 300 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2005 Mercedes 300, you can expect reliable MOT performance overall. 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 111,605 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Brakes — 5.6% of failures
Brakes issues account for 5.6% of MOT failures on 2005 Mercedes 300 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).
Driver's View of the Road — 2.8% of failures
Driver's View of the Road issues account for 2.8% of MOT failures on 2005 Mercedes 300 models. Driver's View of the Road 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.