MOT pass rates / Mercedes-Benz
Mercedes-Benz CLA MOT pass rate and common failures
Of 46,962 class-4 normal initial MOT tests in 2024, 79.6% passed without an initial fail or PRS repair — above the 71.2% UK average. Pass rate moves with age: 84.7% of cars aged 3–5 years passed first time, against 72.5% aged 10–14 years.
Checking a Mercedes-Benz CLA?
Model-level statistics cannot reveal the condition or provenance of one car.
Check its registration free for the actual MOT, tax and mileage record. Before buying, the optional £9.99 full history check adds outstanding-finance, stolen and insurance write-off checks.
Pass rate by vehicle age
| Age | Tests | Initial pass rate |
|---|---|---|
| 3–5 years | 13,434 | 84.7% |
| 6–9 years | 27,680 | 78.7% |
| 10–14 years | 5,848 | 72.5% |
Common initial failure categories
These are the items that most often caused a Mercedes-Benz CLA to fail its first test, with what each one usually means for a buyer.
- Condition — 7% of tests. Corrosion, damage or wear on a tested component. Worth seeing in person, as the cost ranges from trivial to structural.
- Tread Depth — 2.8% of tests. Tyres below the 1.6mm legal limit. Budget for tyres, and treat it as a sign of how the car was maintained.
- Mechanical Brake Components — 2.7% of tests. Worn discs, pads or callipers. Routine wear, but it should be priced into the deal.
- Exhaust Emissions — 2.3% of tests. The car exceeded its emissions limits. Can be a sensor or a service, but on a diesel it can also mean an expensive filter or catalyst.
- Washers — 2% of tests. Empty or blocked washers. Trivial, but again a sign of the last owner's care.
- Springs — 1.8% of tests. A broken or sagging coil spring. Replaced in pairs, so it is not the cheapest failure.
What this does and does not tell you
A pass rate describes how a population of cars behaved on test day. It says nothing about how one car was driven, serviced or repaired, and an MOT does not cover the engine, clutch or gearbox at all.
Use it to know what to look for: if tyres and brakes dominate the list, price those in; if corrosion or suspension appears, get underneath the car. Then check the individual vehicle — its MOT history shows whether these same items have been advised year after year, and its mileage record shows whether the reading is consistent.
How many Mercedes-Benz CLA are left?
At the end of 2026 Q1, DfT recorded 767 licensed and 0 SORN vehicles in the Mercedes-Benz CLA generic-model group.
Licensed and SORN trend for the Mercedes-Benz CLA
Before you buy
- Condition — 7% of tests in 2024. Corrosion, damage or wear on a tested component. Worth seeing in person, as the cost ranges from trivial to structural.
- Tread Depth — 2.8% of tests in 2024. Tyres below the 1.6mm legal limit. Budget for tyres, and treat it as a sign of how the car was maintained.
- Mechanical Brake Components — 2.7% of tests in 2024. Worn discs, pads or callipers. Routine wear, but it should be priced into the deal.
- Exhaust Emissions — 2.3% of tests in 2024. The car exceeded its emissions limits. Can be a sensor or a service, but on a diesel it can also mean an expensive filter or catalyst.
- Check the actual CLA — These figures describe the model group. Enter the registration for that vehicle's free MOT, tax and mileage record before you pay a deposit.
Other Mercedes-Benz models
- Mercedes-Benz C — 74.4% pass
- Mercedes-Benz A-class — 74.6% pass
- Mercedes-Benz E — 76.9% pass
- Mercedes-Benz A — 87.8% pass
- Mercedes-Benz Vito — 66.8% pass
- Mercedes-Benz GLC — 86.5% pass
See every Mercedes-Benz model MOT pass rate
Common questions
What is the Mercedes-Benz CLA MOT pass rate?
79.6% of 46,962 class-4 initial MOT tests on the Mercedes-Benz CLA passed first time in 2024 — above the 71.2% UK average.
Why does the CLA fail its MOT?
The most common initial failure categories are condition (7% of tests), tread depth (2.8% of tests), mechanical brake components (2.7% of tests), exhaust emissions (2.3% of tests).
How many Mercedes-Benz CLA are left in the UK?
767 were licensed and 0 were SORN at the end of 2026 Q1, according to DfT and DVLA statistics for this generic-model group.
Does this tell me whether one particular CLA is a good buy?
No. These are population statistics. Enter that car's registration for its own MOT, tax and mileage record, then check outstanding finance, write-off and stolen markers before buying.
Methodology and limitations
MOT outcomes describe testable items at the time of inspection. They are not a measure of overall mechanical reliability.
Scope: Class 4 normal initial MOT tests completed in 2024. Models require at least 1,000 qualifying tests. Duplicate source rows are removed using official DVSA test IDs.
Source: Driver and Vehicle Standards Agency anonymised MOT tests and results, 2024, published 2025-05-23 under the Open Government Licence v3.0.
Check the actual car
Enter the registration for that car's own free MOT, tax and mileage record. Before money changes hands, the £9.99 full history check adds outstanding finance, insurance write-off and stolen checks.