Reliability Report · Multi-Source Data

Mercedes-Benz CLK Reliability

The Mercedes-Benz CLK (current generation) scores 73/100 on our composite reliability index — good territory — drawn from DVSA, NHTSA data.

Composite Score
73
/ 100
Good
Sources: DVSA · NHTSA · latest 2026
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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.

NHTSA (US Complaints)
Model years 2003–2013 · 2026 report · n=101
101 complaints across 3 sampled year(s); resolved model="CLK-CLASS"
View source ↗
69
/ 100
DVSA MOT (UK Inspections)
Model years 2004–2014 · 2024 report · n=31981
31,981 UK MOT tests · overall 32.1% fail rate vs UK fleet baseline
View source ↗
77
/ 100
DVSA MOT (UK Inspections)
Model years 2003–2013 · 2023 report · n=24752
24,752 UK MOT tests · overall 35.6% fail rate vs UK fleet baseline
View source ↗
73
/ 100

UK MOT Reliability Detail

Based on 31,981 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 1014 yrs
74
28.7% fail vs 32.1% fleet
167 tests
Age 1520 yrs
77
32.1% fail vs 38.8% fleet
31,814 tests

Most Common MOT Failure Categories

#1
Headlamp
8,165
30.0%
#2
Ball joint
6,180
22.7%
#3
Condition
4,635
17.0%
#4
Coil spring
4,463
16.4%
#5
Headlamp aim
3,784
13.9%

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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