Mercedes C270 Cdi Avantgarde Auto MOT Pass Rate
Overall pass rate across all manufacture years, based on 32 real MOT test results. Failure rate: 46.9%.
Data from official DVSA MOT testing records
Mercedes C270 Cdi Avantgarde Auto MOT Reliability Overview
The Mercedes C270 Cdi Avantgarde Auto is a rare vehicle in the UK, with 32 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 53.1% and a failure rate of 46.9%, which is below the UK average of approximately 37%.
Based on this data, the Mercedes C270 Cdi Avantgarde Auto earns a "Poor" reliability rating. The average Mercedes C270 Cdi Avantgarde Auto presents for MOT with approximately 108,464 miles on the clock.
The most common MOT failure for the Mercedes C270 Cdi Avantgarde Auto is Suspension, affecting 56.3% of all tests. 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. The second most common issue is Lamps, Reflectors and Electrical Equipment at 21.9%. Tyres rounds out the top three at 21.9%. 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 | Suspension | 84.4% | 27 |
| 2 | Brakes | 46.9% | 15 |
| 3 | Lamps, Reflectors And Electrical Equipment | 28.1% | 9 |
| 4 | Tyres | 25.0% | 8 |
| 5 | Driver's View Of The Road | 15.6% | 5 |
Failures per 10,000 Miles
avg. 108,464 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 | 7.78 | 84.4% | 27 |
| Brakes | 4.32 | 46.9% | 15 |
| Lamps & Electrical | 2.59 | 28.1% | 9 |
| Tyres | 2.30 | 25.0% | 8 |
| Visibility | 1.44 | 15.6% | 5 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mercedes C270 Cdi Avantgarde Auto has 108,464 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 C270 Cdi Avantgarde Auto has a mileage-adjusted failure rate of 4.32% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Mercedes C270 Cdi Avantgarde Auto MOT Data
The Mercedes C270 Cdi Avantgarde Auto is a rare vehicle in the UK, with 32 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 53.1% and a failure rate of 46.9%, which is below the UK average of approximately 37%.
For Mercedes C270 Cdi Avantgarde Auto owners, these results suggest above-average failure risk — thorough pre-MOT checks are recommended. Focus your pre-MOT checks on suspension and lamps, reflectors and electrical equipment 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 C270 Cdi Avantgarde Auto is likely to perform.
Suspension — 56.3% of failures
Suspension issues account for 56.3% of MOT failures on the Mercedes C270 Cdi Avantgarde Auto. 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.
Lamps, Reflectors and Electrical Equipment — 21.9% of failures
Lamps, Reflectors and Electrical Equipment issues account for 21.9% of MOT failures on the Mercedes C270 Cdi Avantgarde Auto. 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.
Tyres — 21.9% of failures
Tyres issues account for 21.9% of MOT failures on the Mercedes C270 Cdi Avantgarde Auto. 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.
Frequently Asked Questions
What is the MOT pass rate for the Mercedes C270 Cdi Avantgarde Auto?
Based on 32 (based on limited data) MOT tests in our database, the Mercedes C270 Cdi Avantgarde Auto has an overall pass rate of 53.1% (46.9% fail rate).
What are the most common MOT failures on a Mercedes C270 Cdi Avantgarde Auto?
The top 3 reasons a Mercedes C270 Cdi Avantgarde Auto fails its MOT are: 1. Suspension (56.3%), 2. Lamps, Reflectors and Electrical Equipment (21.9%), 3. Tyres (21.9%). Check these areas before booking your MOT.
Is the Mercedes C270 Cdi Avantgarde Auto reliable?
With a 46.9% MOT failure rate, the C270 Cdi Avantgarde Auto is less reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mercedes C270 Cdi Avantgarde Auto?
Based on failure data, focus on: Suspension (56.3%); Lamps, Reflectors and Electrical Equipment (21.9%); Tyres (21.9%). 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.