2021 Mercedes-Benz EQC 400 AMG Line Premium + 4M MOT pass rate: 83.0% (2,728 tests)
Is the 2021 EQC 400 AMG Line Premium + 4M getting worse?
Pass rate of 2021-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2024 | 81.3% -9.4 vs same-age |
|
| 2025 | 84.6% -5.5 vs same-age |
The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.
What fails on a 2021 EQC 400 AMG Line Premium + 4M
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Tyres | 566 | 78.4% |
| 2 | Suspension | 67 | 9.3% |
| 3 | Visibility | 30 | 4.2% |
| 4 | Identification of the vehicle | 28 | 3.9% |
| 5 | Brakes | 10 | 1.4% |
| 6 | Lamps, reflectors and electrical equipment | 7 | 1.0% |
All EQC 400 AMG Line Premium + 4M years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2020 | 1,794 | 83.9% | -6.0 pts | 31,360 |
| 2021 (this page) | 2,728 | 83.0% | -7.4 pts | 30,310 |
| 2022 | 2,367 | 82.5% | -8.8 pts | 27,413 |
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FAQs
Is a 2021 Mercedes-Benz EQC 400 AMG Line Premium + 4M reliable?
2021-registered examples passed 83.0% of their MOT tests (2,728 tests, 2023–2025), -7.4 points versus all UK cars registered in the same year. At roughly 5 years old with a median 30,310 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2021 EQC 400 AMG Line Premium + 4M?
The median tested example shows 30,310 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.
Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.