Reliability Report · Multi-Source Data

Mercedes-Benz SLC Reliability

The Mercedes-Benz SLC (current generation) scores 89/100 on our composite reliability index — excellent territory — drawn from DVSA, NHTSA data.

Composite Score
89
/ 100
Excellent
Sources: DVSA · NHTSA · latest 2026
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Reliability data covers the model. A VIN history report covers the exact Mercedes-Benz SLC 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 2014–2020 · 2026 report · n=6
6 complaints across 3 sampled year(s); resolved model="SLC-CLASS"
View source ↗
100
/ 100
DVSA MOT (UK Inspections)
Model years 2015–2021 · 2024 report · n=16346
16,346 UK MOT tests · overall 10.4% fail rate vs UK fleet baseline
View source ↗
87
/ 100
DVSA MOT (UK Inspections)
Model years 2014–2020 · 2023 report · n=8187
8,187 UK MOT tests · overall 11.4% fail rate vs UK fleet baseline
View source ↗
82
/ 100

UK MOT Reliability Detail

Based on 16,346 MOT tests in the UK during the 2024 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 3–5 yrs
87
6.4% fail vs 10.9% fleet
2,043 tests
Age 6–9 yrs
87
10.9% fail vs 19.2% fleet
14,303 tests

Most Common MOT Failure Categories

#1
Condition
1,550
45.8%
#2
Ball joint dust cover
707
20.9%
#3
Windscreen
389
11.5%
#4
Linkage ball joint dust cover
371
11.0%
#5
Tread depth
365
10.8%

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

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