2014 Mercedes-Benz C-Class MOT pass rate, common failures & what to check
In 2025, 75.2% of Mercedes-Benz C-Class cars first used in 2014 passed their MOT first time, against 68.6% for all cars first used in 2014. Across 77,709 C-Class first tests from 2023 to 2025, the most common failure areas were suspension, tyres and brakes.
This page analyses first MOT tests for Mercedes-Benz C-Class cars first used in 2014 (all trims grouped): 2021 to 2025 for the pass-rate trend, and 2023 to 2025 for the failure and advisory analysis — plus what is worth checking before you buy one.
Data: DVSA anonymised MOT tests to December 2025 · Calculated by SortedCars · Updated October 2026
How the 2014 Mercedes-Benz C-Class MOT pass rate has changed
Share of first tests passed in each year, C-Class cars first used in 2014 against all cars first used in 2014 (any make or fuel; not adjusted for mileage, fuel or use). In 2025 the C-Class figure was 6.6 points higher.
View this chart as a table
| Test year | 2014 C-Class | All cars first used 2014 | C-Class first tests |
|---|---|---|---|
| 2021 | 81.6% | 76.3% | 27,042 |
| 2022 | 79.8% | 74.1% | 26,886 |
| 2023 | 77.7% | 71.7% | 26,581 |
| 2024 | 76.4% | 69.9% | 25,930 |
| 2025 | 75.2% | 68.6% | 25,198 |
Common 2014 Mercedes-Benz C-Class MOT failures
Share of the 18,299 failed first tests (2023–2025) with at least one failure in each area. A test can fail in more than one area, so the shares add up to more than 100%.
Most common failure items
| DVSA failure item | Share of failed first tests | Tests |
|---|---|---|
| Tread depth: below requirements of 1.6mm | 14.2% | 2,606 |
| Ball joint: excessively worn | 11.6% | 2,114 |
| Coil spring: fractured or broken | 10.3% | 1,892 |
| Tyre condition: has ply or cords exposed | 7.4% | 1,360 |
| Brake pads: less than 1.5 mm thick | 6.2% | 1,140 |
Item names are DVSA’s own wording. 2023–2025 combined.
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Typical repair costs for common MOT failures
Typical UK garage prices for the job, not for a C-Class in particular, and not a quote.
| Failure item | Typical job | Typical UK price | Usual range |
|---|---|---|---|
| Ball joint: excessively worn | Ball joint replacement | £90 | £60–£150 |
| Coil spring: fractured or broken | Coil spring replacement | £248 | £175–£400 |
From published UK repair-cost guides, checked September 2026. Only jobs with a published typical price are shown.
What to check on a 2014 Mercedes-Benz C-Class before buying
The three areas where failed first tests most often had a fault, 2023–2025.
- Suspension. Worth looking behind the front wheels with a torch at the coil springs, and listening for knocks over bumps on the test drive.
- Tyres. Worth checking the tread depth across the whole width of each tyre, and the sidewalls for cuts, cracks and bulges.
- Brakes. Worth looking at the discs and pads through the wheel spokes for scoring and a worn lip, and noticing on the test drive whether the car pulls to one side or the pedal feels long.
Common 2014 Mercedes-Benz C-Class MOT advisories
Advisories are points the tester noted that did not fail the car. Most common on 2014 C-Class cars, as a share of all 77,709 first tests, 2023–2025.
| DVSA advisory item | Share of first tests | Tests |
|---|---|---|
| Tread depth: worn close to legal limit/worn on edge | 19.0% | 14,763 |
| Brake discs: worn, pitted or scored, but not seriously weakened | 8.3% | 6,465 |
| Brake pads: wearing thin | 7.8% | 6,040 |
| Tyre condition: slightly damaged/cracking or perishing | 4.1% | 3,217 |
| Brake discs: worn, but not excessively | 4.0% | 3,129 |
Questions about the 2014 Mercedes-Benz C-Class MOT
What is the MOT pass rate of a 2014 Mercedes-Benz C-Class?
In 2025, 75.2% of C-Class cars first used in 2014 passed their MOT first time, against 68.6% for all cars first used in 2014. A car fixed during the test counts as a fail.
What does a 2014 C-Class most often fail its MOT on?
Suspension (in 34.6% of failed first tests, 2023–2025), tyres (34.0%) and brakes (24.6%). The single most common item was “Tread depth: below requirements of 1.6mm” (14.2%).
How often does a 2014 Mercedes-Benz C-Class fail its MOT?
In 2025, 24.8% of first tests on C-Class cars first used in 2014 did not pass first time: 21.4% failed, and a further 3.4% had a fault fixed during the test (counted as a fail here). Across 2023–2025, 18,299 of 77,709 first tests did not pass first time.
What are the most common 2014 Mercedes-Benz C-Class MOT advisories?
“Tread depth: worn close to legal limit/worn on edge” (on 19.0% of first tests, 2023–2025), “Brake discs: worn, pitted or scored, but not seriously weakened” (8.3%), “Brake pads: wearing thin” (7.8%), “Tyre condition: slightly damaged/cracking or perishing” (4.1%) and “Brake discs: worn, but not excessively” (4.0%).
Is a 2014 Mercedes-Benz C-Class reliable?
An MOT pass rate shows what failed at the test, not how reliable a car is. For this group of cars the first-time pass rate went from 81.6% in 2021 to 75.2% in 2025. For one particular car, its own MOT history matters more than the average.
Other cars first used in 2014
The most-tested cars from the same year. Each page uses the same method.
2014 Ford Fiesta MOT statistics · 2014 Vauxhall Corsa MOT statistics · 2014 Ford Focus MOT statistics · 2014 Volkswagen Golf MOT statistics · 2014 Vauxhall Astra MOT statistics
Checking a specific 2014 C-Class?
The numbers above cover every C-Class first used in 2014 and tested in Great Britain. Our free check shows the actual MOT history, mileage record and tax status of the one you are looking at.
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