MOT performance
2020 Mercedes-Benz GLA: MOT pass rate and common failures
Of 18,391 MOT tests on 2020-registered Mercedes-Benz GLAs in 2023–2024 (on average 2.8 years old at test, median 23,188 miles), 91.1% passed first time, 5.6 points higher than the Mercedes-Benz GLA overall. Allowing for age, mileage and fuel, 2020 Mercedes-Benz GLAs failed 24% less often than comparable cars.
18,391 MOT tests on 8,936 vehicles, 2023–2024 · Source: DVSA (Open Government Licence) · Analysis: 73 Auto
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| Figure | Value | Basis |
|---|---|---|
| First-time pass rate | 91.1% | ±0.4 pts (95%), n = 18,391 |
| All Mercedes-Benz GLAs | 85.6% | n = 165,835 |
| Failures vs similar cars | 0.76× | same age, mileage and fuel = 1.00 |
| Tests with a dangerous defect | 3.1% | n = 18,391 |
| Average age at test | 2.8 years | n = 18,391 |
Where 2020 Mercedes-Benz GLAs fail
| Area | Tests failed on it | vs similar cars |
|---|---|---|
| Tyres | 3.9% | -12% |
| Driver's view of the road | 1.8% | -38% |
| Brakes | 1.7% | -9% |
| Lights, reflectors and electrical | 1.3% | -50% |
| Suspension | 0.4% | -31% |
| Seat belts and airbags | 0.3% | -7% |
| Noise, emissions and leaks | 0.2% | -46% |
| Registration plates and VIN | 0.2% | +35% |
| Body, chassis and structure | 0.2% | -11% |
| Road wheels | 0.1% | -20% |
| Steering | 0.0% | -78% |
Most common failure items
| Item | Area | Share of tests |
|---|---|---|
| Condition: has a cut in excess of the requirements deep enough to reach the ply or cords | Tyres | 1.54% |
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 1.17% |
| Wipers: does not clear the windscreen effectively | Driver's view of the road | 1.15% |
| Brake pads: less than 1.5 mm thick | Brakes | 1.05% |
| Headlamp aim: too low | Lights, reflectors and electrical | 0.64% |
Check a specific 2020 Mercedes-Benz GLA
Enter a UK registration to see that car's own MOT history and what it is likely to cost to own. Your first check is free and shows the vehicle summary and its headline ownership cost. The category-by-category breakdown is part of a paid check.
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About this data. These are MOT test results, not a measure of mechanical reliability: a car's MOT outcome reflects its condition on the day, which depends on how it has been maintained and driven as well as how it was built. Figures cover class 4 vehicles (cars and light vans), normal tests only (retests excluded), outcomes pass, fail and pass after rectification at the station; vehicles at least 2.5 years old at test. Tests from 2023-01-01 to 2024-12-30. “Compared with similar cars” means compared with the national rate for cars of the same age, mileage band and fuel. Contains public sector information licensed under the Open Government Licence v3.0. Makes and models are matched to 73 Auto's vehicle catalogue; tests that can't be matched are left out rather than guessed. See how the MOT figures are produced.