Mercedes-Benz GLC MOT pass rate: 87.2% (65,847 tests, 2025)

The Mercedes-Benz GLC passed 87.2% of its 65,847 MOT tests in 2025 — 9.7 points above the UK average of 77.5%. The median tested example was 7 years old with 56,491 miles on the clock.

87.2%Pass rate (2025)

65,847MOT tests analysed

56,491 miMedian mileage at test

7 yrsMedian age at test

How the GLC compares

Mercedes-Benz GLC

87.2%

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 GLC

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

#	System	Defects recorded	Share
1	Tyres	4,550	34.7%
2	Suspension	3,580	27.3%
3	Brakes	1,554	11.9%
4	Body, chassis, structure	1,052	8.0%
5	Noise, emissions and leaks	888	6.8%
6	Visibility	812	6.2%

Pre-MOT checklist for GLC owners

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

Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory
Bounce each corner and listen for clonks over speed bumps — suspension is this model’s (and the UK’s) top failure system
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
A blowing exhaust or visible smoke will fail; warm the engine fully before the test

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

GLC pass rate by registration year

Strongest age-adjusted years: 2015, 2016. Full ranking and method: Mercedes-Benz GLC years to avoid.

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2015	3,973	84.7%	+6.0 pts	73,563
2016	27,306	86.2%	+4.8 pts	68,274
2017	37,380	86.9%	+2.9 pts	58,748
2018	56,380	87.7%	+1.4 pts	48,279
2019	43,500	90.1%	+1.7 pts	39,649
2020	13,340	91.7%	+1.8 pts	34,064
2021	5,628	92.8%	+2.3 pts	32,714
2022	2,854	92.5%	+1.3 pts	27,202

Check a specific GLC 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 GLA83.1% pass rate · 64,404 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 GLC?

In 2025, 87.2% of 65,847 first MOT tests on the Mercedes-Benz GLC were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the GLC fail its MOT on most?

The biggest defect group is tyres (34.7% of its recorded defects), followed by suspension.

Is the Mercedes-Benz GLC reliable?

MOT pass rate is one lens on durability: at 87.2% it performs above the national average at a median age of 7 years and 56,491 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.