2015 Mercedes-Benz GLA MOT pass rate, common failures & what to check
In 2025, 76.4% of Mercedes-Benz GLAs first used in 2015 passed their MOT first time, against 71.9% for all cars first used in 2015. Across 26,530 GLA first tests from 2023 to 2025, the most common failure areas were suspension, tyres and lamps and electrical equipment.
This page analyses first MOT tests for Mercedes-Benz GLAs first used in 2015 (all trims grouped): 2021 to 2025 for the pass-rate trend, and 2023 to 2025 for the failure and advisory analysis — plus what is worth checking before you buy one.
Data: DVSA anonymised MOT tests to December 2025 · Calculated by SortedCars · Updated October 2026
How the 2015 Mercedes-Benz GLA MOT pass rate has changed
Share of first tests passed in each year, GLAs first used in 2015 against all cars first used in 2015 (any make or fuel; not adjusted for mileage, fuel or use). In 2025 the GLA figure was 4.5 points higher.
View this chart as a table
| Test year | 2015 GLA | All cars first used 2015 | GLA first tests |
|---|---|---|---|
| 2021 | 85.7% | 79.7% | 8,932 |
| 2022 | 83.7% | 77.8% | 8,974 |
| 2023 | 81.4% | 75.5% | 8,869 |
| 2024 | 79.2% | 73.5% | 8,857 |
| 2025 | 76.4% | 71.9% | 8,804 |
Common 2015 Mercedes-Benz GLA MOT failures
Share of the 5,570 failed first tests (2023–2025) with at least one failure in each area. A test can fail in more than one area, so the shares add up to more than 100%.
Most common failure items
| DVSA failure item | Share of failed first tests | Tests |
|---|---|---|
| Coil spring: fractured or broken | 21.1% | 1,173 |
| Linkage ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt | 12.6% | 704 |
| Tread depth: below requirements of 1.6mm | 9.8% | 546 |
| Malfunction indicator lamp: inoperative or indicates a malfunction | 8.4% | 469 |
| Brake pads: less than 1.5 mm thick | 8.2% | 459 |
Item names are DVSA’s own wording. 2023–2025 combined.
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Typical repair costs for common MOT failures
Typical UK garage prices for the job, not for a GLA in particular, and not a quote.
| Failure item | Typical job | Typical UK price | Usual range |
|---|---|---|---|
| Coil spring: fractured or broken | Coil spring replacement | £248 | £175–£400 |
From published UK repair-cost guides, checked September 2026. Only jobs with a published typical price are shown.
What to check on a 2015 Mercedes-Benz GLA before buying
The three areas where failed first tests most often had a fault, 2023–2025.
- Suspension. Worth looking behind the front wheels with a torch at the coil springs, and listening for knocks over bumps on the test drive.
- Tyres. Worth checking the tread depth across the whole width of each tyre, and the sidewalls for cuts, cracks and bulges.
- Lamps and electrics. Ask someone to watch while you work the brake lights, indicators, sidelights, dipped and main beam, and the number-plate lamps.
Common 2015 Mercedes-Benz GLA MOT advisories
Advisories are points the tester noted that did not fail the car. Most common on 2015 GLAs, as a share of all 26,530 first tests, 2023–2025.
| DVSA advisory item | Share of first tests | Tests |
|---|---|---|
| Tread depth: worn close to legal limit/worn on edge | 16.2% | 4,285 |
| Brake pads: wearing thin | 9.2% | 2,445 |
| Brake discs: worn, pitted or scored, but not seriously weakened | 9.0% | 2,387 |
| Tyre condition: slightly damaged/cracking or perishing | 8.3% | 2,189 |
| Brake discs: worn, but not excessively | 4.6% | 1,218 |
Questions about the 2015 Mercedes-Benz GLA MOT
What is the MOT pass rate of a 2015 Mercedes-Benz GLA?
In 2025, 76.4% of GLAs first used in 2015 passed their MOT first time, against 71.9% for all cars first used in 2015. A car fixed during the test counts as a fail.
What does a 2015 GLA most often fail its MOT on?
Suspension (in 41.5% of failed first tests, 2023–2025), tyres (24.8%) and lamps and electrical equipment (15.9%). The single most common item was “Coil spring: fractured or broken” (21.1%).
How often does a 2015 Mercedes-Benz GLA fail its MOT?
In 2025, 23.6% of first tests on GLAs first used in 2015 did not pass first time: 20.4% failed, and a further 3.2% had a fault fixed during the test (counted as a fail here). Across 2023–2025, 5,570 of 26,530 first tests did not pass first time.
What are the most common 2015 Mercedes-Benz GLA MOT advisories?
“Tread depth: worn close to legal limit/worn on edge” (on 16.2% of first tests, 2023–2025), “Brake pads: wearing thin” (9.2%), “Brake discs: worn, pitted or scored, but not seriously weakened” (9.0%), “Tyre condition: slightly damaged/cracking or perishing” (8.3%) and “Brake discs: worn, but not excessively” (4.6%).
Is a 2015 Mercedes-Benz GLA reliable?
An MOT pass rate shows what failed at the test, not how reliable a car is. For this group of cars the first-time pass rate went from 85.7% in 2021 to 76.4% in 2025. For one particular car, its own MOT history matters more than the average.
Other cars first used in 2015
The most-tested cars from the same year. Each page uses the same method.
2015 Ford Fiesta MOT statistics · 2015 Vauxhall Corsa MOT statistics · 2015 Ford Focus MOT statistics · 2015 Volkswagen Golf MOT statistics · 2015 Nissan Qashqai MOT statistics
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