2020 Mercedes-Benz GLA 180 AMG Line Edition Auto MOT pass rate: 93.0% (4,802 tests)
Is the 2020 GLA 180 AMG Line Edition Auto getting worse?
Pass rate of 2020-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2023 | 93.5% +2.7 vs same-age |
|
| 2024 | 93.5% +3.5 vs same-age |
|
| 2025 | 91.9% +3.0 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 2020 GLA 180 AMG Line Edition Auto
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Tyres | 164 | 33.1% |
| 2 | Brakes | 107 | 21.6% |
| 3 | Visibility | 69 | 13.9% |
| 4 | Lamps, reflectors and electrical equipment | 40 | 8.1% |
| 5 | Suspension | 33 | 6.7% |
| 6 | Noise, emissions and leaks | 28 | 5.7% |
All GLA 180 AMG Line Edition Auto years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2019 | 6,988 | 91.2% | +2.8 pts | 32,206 |
| 2020 (this page) | 4,802 | 93.0% | +3.1 pts | 26,200 |
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FAQs
Is a 2020 Mercedes-Benz GLA 180 AMG Line Edition Auto reliable?
2020-registered examples passed 93.0% of their MOT tests (4,802 tests, 2023–2025), +3.1 points versus all UK cars registered in the same year. At roughly 6 years old with a median 26,200 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2020 GLA 180 AMG Line Edition Auto?
The median tested example shows 26,200 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.