2014 Mercedes-Benz CLA MOT pass rate: 78.1% (12,867 tests)

2014-registered Mercedes-Benz CLAs passed 78.1% of 12,867 MOT tests in 2023–2025 — 2.2 points better than all UK cars registered in 2014 (75.8%). This is one of the strongest CLA years in the age-adjusted MOT ranking, although the individual car still matters more.

78.1%Pass rate, 2014 cars

102.2Age-adjusted index (100 = average)

12,867Tests analysed

84,970 miMedian mileage at test

79.9% / 76.9%Petrol vs diesel pass rate

Is the 2014 CLA getting worse?

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

Test year	Pass rate
2023	80.0% +2.6 vs same-age
2024	77.4% +1.8 vs same-age
2025	76.6% +2.2 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 CLA

#	System	Defects recorded	Share
1	Tyres	1,626	26.1%
2	Suspension	1,445	23.2%
3	Lamps, reflectors and electrical equipment	783	12.6%
4	Brakes	738	11.8%
5	Noise, emissions and leaks	502	8.1%
6	Visibility	421	6.8%

All CLA years compared

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2013	6,281	75.6%	+2.3 pts	90,530
2014 (this page)	12,867	78.1%	+2.2 pts	84,970
2015	20,374	79.5%	+0.8 pts	78,313
2016	22,781	80.7%	-0.7 pts	70,732
2017	24,420	82.1%	-2.0 pts	60,610
2018	24,735	84.4%	-1.9 pts	48,754
2019	23,290	86.3%	-2.1 pts	38,691
2020	15,059	87.1%	-2.9 pts	32,458
2021	12,145	88.7%	-1.7 pts	30,528
2022	6,109	89.8%	-1.4 pts	25,086

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

Buying a 2014 CLA? 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 CLA reliable?

2014-registered examples passed 78.1% of their MOT tests (12,867 tests, 2023–2025), +2.2 points versus all UK cars registered in the same year. At roughly 12 years old with a median 84,970 miles, condition now varies car by car — always check the individual MOT history.

What mileage is too high for a 2014 CLA?

The median tested example shows 84,970 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 CLA?

In this cohort petrols pass 79.9% of tests against 76.9% 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.