In 2025, 66,241 Mercedes-Benz Glc cars had a regular MOT in Great Britain. 85% passed first time, compared with 81% for all cars of the same ages, which makes the Glc better than average. Adjusted for age, it ranks 65 of the 217 most-tested car models.
That comparison matters: older cars fail more often, so a raw pass rate flatters models that are mostly young. We compare each model against every car on the road at the same age.
Pass rate by age
At 3 years old, 91% of Glcs passed first time (all cars that age: 88%). By 10 years, that figure is 83% (all cars: 72%). It beats the average car at every age with enough data, from 4 to 10 years.
Mercedes-Benz Glc All cars of that age
| Age | Tests | Glc passed first time | All cars | Typical mileage |
|---|---|---|---|---|
| 3 years | 2,871 | 91% | 88% | 29,251 |
| 4 years | 2,807 | 90% | 87% | 39,200 |
| 5 years | 4,304 | 90% | 86% | 45,776 |
| 6 years | 14,550 | 86% | 84% | 50,932 |
| 7 years | 18,860 | 84% | 81% | 59,388 |
| 8 years | 12,432 | 84% | 78% | 69,960 |
| 9 years | 9,066 | 83% | 75% | 79,296 |
| 10 years | 1,312 | 83% | 72% | 83,473 |
What fails most on a Mercedes-Benz Glc
The area that lets the Glc down most, relative to other cars, is plates and VIN: 0.6% of tests failed on it, 16.3 times the rate for the average car. It does comparatively well on lights and electrics and brakes.
Share of Glc tests failing on this area Average car
The six most common failure items
| Failure item | Area | Share of tests |
|---|---|---|
| A suspension pin, bush or joint excessively worn | Suspension | 4.0% |
| A tyre seriously damaged | Tyres | 2.6% |
| Tyre tread depth not in accordance with the requirements | Tyres | 2.4% |
| Engine MIL illuminated indicating a malfunction | Emissions and leaks | 1.7% |
| A tyre cords visible or damaged | Tyres | 1.5% |
| A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc | Body and structure | 1.4% |
What to check when buying a used Glc
Based on where the Glc fails more often than other cars, these are the checks worth making before you buy:
- Plates and VIN: Check the number plates are legal and the VIN matches the V5C logbook. More
- Tyres: Check tread across the whole width (uneven wear hints at alignment or suspension faults), and look for cuts, bulges and mismatched brands. Repair guide
- Emissions and leaks: Look for oil and coolant leaks underneath, listen for exhaust blows on a cold start, and watch for smoke when revving. Repair guide
Then check the individual car: its own MOT history will show whether it follows the pattern. A car with repeated advisories in the same weak area is more likely to fail its next test.
Check a specific Glc
Enter the registration to see its full MOT history, mileage record and reliability score, compared with these figures.
Check a GlcFrequently asked questions
What is the MOT pass rate for a Mercedes-Benz Glc?
In 2025, 85% of Mercedes-Benz Glc cars passed their MOT first time, across 66,241 tests. Cars of the same ages averaged 81%.
What do Mercedes-Benz Glc cars most often fail their MOT on?
The most common failure items were: a suspension pin, bush or joint excessively worn (4.0% of tests); a tyre seriously damaged (2.6% of tests); tyre tread depth not in accordance with the requirements (2.4% of tests).
Other Mercedes-Benz models
Mercedes-Benz C-Class (74%), Mercedes-Benz A-Class (77%), Mercedes-Benz E-Class (77%), Mercedes-Benz Vito (67%), Mercedes-Benz B-Class (72%), Mercedes-Benz Gla (80%). All Mercedes-Benz models
Source: DVSA anonymised MOT tests and results, 2025 (class 4 normal tests; first-time pass means passed with no faults fixed at the test). Contains public sector information licensed under the Open Government Licence v3.0.