Reliability Report · Multi-Source Data

Mercedes-Benz A-Class Reliability

The Mercedes-Benz A-Class (current generation) scores 74/100 on our composite reliability index — good territory — drawn from ADAC, DVSA, TÜV data.

Composite Score
74
/ 100
Good
Sources: ADAC · DVSA · TÜV · latest 2025
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Reliability by Source

Each independent organization measures reliability differently. TÜV reports inspection defect rates by age band. ADAC reports pan-European breakdowns per 1,000 vehicles. NHTSA aggregates US consumer complaints. DVSA MOT data is the UK fleet's annual safety inspection — every car 3+ years old. Lower variance across sources = higher confidence in the composite.

ADAC (European Auto Club)
All model years · 2025 report
8.8/1000 breakdowns
View source ↗
65
/ 100
TÜV (Germany)
All model years · 2025 report
HU defect rate (TÜV Report 2025): 10-11yr 14.7%
View source ↗
81
/ 100
DVSA MOT (UK Inspections)
Model years 2004–2021 · 2024 report · n=558675
558,675 UK MOT tests · overall 15.5% fail rate vs UK fleet baseline
View source ↗
79
/ 100
DVSA MOT (UK Inspections)
Model years 2003–2020 · 2023 report · n=305669
305,669 UK MOT tests · overall 17.9% fail rate vs UK fleet baseline
View source ↗
72
/ 100

UK MOT Reliability Detail

Based on 558,675 MOT tests in the UK during the 2024reporting period. Score for each age band reflects this model's fail rate vs the UK-fleet baseline fail rate at the same age — a generation-aware metric.

Age 35 yrs
79
8.5% fail vs 10.9% fleet
183,155 tests
Age 69 yrs
79
14.9% fail vs 19.2% fleet
249,409 tests
Age 1014 yrs
81
23.0% fail vs 32.1% fleet
89,215 tests
Age 1520 yrs
73
36.0% fail vs 38.8% fleet
36,896 tests

Most Common MOT Failure Categories

#1
Condition
42,284
30.6%
#2
Linkage ball joint dust cover
26,989
19.5%
#3
Windscreen
24,936
18.0%
#4
Tread depth
22,563
16.3%
#5
Wipers
21,482
15.5%

Categories ranked across all MOT tests of this model in the UK during the 2024period. "Condition" covers cosmetic / wear issues; suspension and braking dominate the rest.

Compare Against Alternatives

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