Reliability Report · Multi-Source Data

Mercedes-Benz C 320 Reliability

The Mercedes-Benz C 320 (current generation) scores 55/100 on our composite reliability index — average territory — drawn from DVSA, NHTSA data.

Composite Score
55
/ 100
Average
Sources: DVSA · NHTSA · latest 2026
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Buying a Mercedes-Benz C 320? Check its VIN history first

Reliability data covers the model. A VIN history report covers the exact Mercedes-Benz C 320 you're looking at — accident and write-off records, mileage rollback, outstanding finance and theft checks.

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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=2207
2207 complaints across 5 sampled year(s); resolved model="C-CLASS"
View source ↗
29
/ 100
DVSA MOT (UK Inspections)
Model years 2003–2013 · 2023 report · n=1130
1,130 UK MOT tests · overall 33.5% fail rate vs UK fleet baseline
View source ↗
74
/ 100

UK MOT Reliability Detail

Based on 1,130 MOT tests in the UK during the 2023 reporting 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
76
27.3% fail vs 32.1% fleet
176 tests
Age 1520 yrs
74
34.6% fail vs 38.8% fleet
954 tests

Most Common MOT Failure Categories

#1
Ball joint
136
26.2%
#2
Coil spring
120
23.1%
#3
Condition
113
21.7%
#4
Ball joint dust cover
78
15.0%
#5
Rigid brake pipes
73
14.0%

Categories ranked across all MOT tests of this model in the UK during the 2023 period. "Condition" covers cosmetic / wear issues; suspension and braking dominate the rest.

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