2014 Mercedes-Benz GLA MOT pass rate: 83.4% (10,206 tests)

2014-registered Mercedes-Benz GLAs passed 83.4% of 10,206 MOT tests in 2023–2025 — 7.5 points better than all UK cars registered in 2014 (75.8%). This is one of the strongest GLA years in the age-adjusted MOT ranking, although the individual car still matters more.

83.4%Pass rate, 2014 cars

107.5Age-adjusted index (100 = average)

10,206Tests analysed

73,392 miMedian mileage at test

87.0% / 82.7%Petrol vs diesel pass rate

Is the 2014 GLA getting worse?

Pass rate of 2014-registered cars across recent test years:

Test year	Pass rate
2023	84.6% +7.1 vs same-age
2024	83.1% +7.5 vs same-age
2025	82.3% +7.9 vs same-age

The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.

What fails on a 2014 GLA

#	System	Defects recorded	Share
1	Suspension	948	29.8%
2	Tyres	776	24.4%
3	Lamps, reflectors and electrical equipment	417	13.1%
4	Brakes	351	11.0%
5	Noise, emissions and leaks	254	8.0%
6	Visibility	225	7.1%

All GLA years compared

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2014 (this page)	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

Weighing up which year to buy? See the full ranking: Mercedes-Benz GLA years to avoid.

Buying a 2014 GLA? Two checks first

Free MOT history checkThe exact car’s failures, advisories and mileage trail — sellers can’t edit it
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

FAQs

Is a 2014 Mercedes-Benz GLA reliable?

2014-registered examples passed 83.4% of their MOT tests (10,206 tests, 2023–2025), +7.5 points versus all UK cars registered in the same year. At roughly 12 years old with a median 73,392 miles, condition now varies car by car — always check the individual MOT history.

What mileage is too high for a 2014 GLA?

The median tested example shows 73,392 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.

Should I buy the petrol or diesel 2014 GLA?

In this cohort petrols pass 87.0% of tests against 82.7% for diesels. Mileage and use can explain part of that gap, so treat it as a reason to inspect DPF and emissions history, not a fuel-type verdict.

Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.