Mercedes-Benz GLA MOT pass rate: 83.1% (64,404 tests, 2025)

The Mercedes-Benz GLA passed 83.1% of its 64,404 MOT tests in 2025 — 5.6 points above the UK average of 77.5%. The median tested example was 8 years old with 57,594 miles on the clock.

83.1%Pass rate (2025)

64,404MOT tests analysed

57,594 miMedian mileage at test

8 yrsMedian age at test

How the GLA compares

Mercedes-Benz GLA

83.1%

UK average (all Class 4 vehicles)

77.5% across 33.1 million tests

Mercedes-Benz average (all models)

80.7%

What fails most on the Mercedes-Benz GLA

Across failed and rectified tests in 2025, these vehicle systems produced the most defects on the GLA:

#	System	Defects recorded	Share
1	Suspension	4,975	26.5%
2	Tyres	4,660	24.8%
3	Brakes	2,539	13.5%
4	Body, chassis, structure	1,942	10.3%
5	Lamps, reflectors and electrical equipment	1,594	8.5%
6	Visibility	1,576	8.4%

Pre-MOT checklist for GLA owners

Based on the failure profile above, ten minutes with a torch before your test removes the most likely fail items:

Bounce each corner and listen for clonks over speed bumps — suspension is this model’s (and the UK’s) top failure system
Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory
Feel for a spongy pedal or pulling to one side; check pad wear through the wheel spokes if visible
Look underneath for corrosion around sills and subframes, especially on older cars
Walk round with all lights on: one blown bulb is the most avoidable fail there is

Check the engine before the tester does

A stored fault code with the engine light on is an automatic Major defect. Scan and clear resolved faults before booking.

Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

GLA pass rate by registration year

Strongest age-adjusted years: 2014. Full ranking and method: Mercedes-Benz GLA years to avoid.

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2014	10,206	83.4%	+7.5 pts	73,392
2015	26,123	82.1%	+3.4 pts	68,862
2016	31,346	83.0%	+1.7 pts	61,490
2017	37,781	85.1%	+1.1 pts	51,994
2018	48,276	87.6%	+1.3 pts	42,565
2019	34,572	88.5%	+0.1 pts	35,018
2020	4,103	89.9%	-0.0 pts	27,762

Check a specific GLA before you buy

Pass rates describe the model; they can’t tell you about the one car you’re looking at. Run its plate through our free MOT history check to see its personal record of failures, advisories and mileage readings.

Other Mercedes-Benz models

C78.2% pass rate · 343,551 tests A-Class77.8% pass rate · 232,671 tests E79.7% pass rate · 215,896 tests A89.1% pass rate · 93,733 tests Vito73.4% pass rate · 81,263 tests GLC87.2% pass rate · 65,847 tests CLA82.7% pass rate · 62,279 tests B-Class74.9% pass rate · 60,589 tests

FAQs

What is the MOT pass rate for a Mercedes-Benz GLA?

In 2025, 83.1% of 64,404 first MOT tests on the Mercedes-Benz GLA were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the GLA fail its MOT on most?

The biggest defect group is suspension (26.5% of its recorded defects), followed by tyres.

Is the Mercedes-Benz GLA reliable?

MOT pass rate is one lens on durability: at 83.1% it performs above the national average at a median age of 8 years and 57,594 miles. Always check the individual car's history too.

Source: DVSA Anonymised MOT tests and results, 2025 extract (Class 4 initial tests only; retests excluded). Contains public sector information licensed under the Open Government Licence v3.0. Figures rounded to one decimal place.