Reliability Report · Multi-Source Data

Mini Cooper s Reliability

The Mini Cooper s (current generation) scores 81/100 on our composite reliability index — good territory — drawn from DVSA, NHTSA data.

Composite Score
81
/ 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 2003–2020 · 2026 report · n=26
26 complaints across 1 sampled year(s); resolved model="COOPER S CONVERTIBLE"
View source ↗
73
/ 100
DVSA MOT (UK Inspections)
Model years 2004–2021 · 2024 report · n=152691
152,691 UK MOT tests · overall 9.9% fail rate vs UK fleet baseline
View source ↗
86
/ 100
DVSA MOT (UK Inspections)
Model years 2003–2020 · 2023 report · n=73057
73,057 UK MOT tests · overall 11.6% fail rate vs UK fleet baseline
View source ↗
81
/ 100

UK MOT Reliability Detail

Based on 152,691 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 3–5 yrs
82
7.8% fail vs 10.9% fleet
69,258 tests
Age 6–9 yrs
89
10.2% fail vs 19.2% fleet
64,689 tests
Age 10–14 yrs
91
15.2% fail vs 32.1% fleet
16,416 tests
Age 15–20 yrs
80
29.5% fail vs 38.8% fleet
2,328 tests

Most Common MOT Failure Categories

#1
Condition
11,645
32.6%
#2
Windscreen
9,984
28.0%
#3
Wipers
8,101
22.7%
#4
Registration plate lamp(s)
3,105
8.7%
#5
Tread depth
2,879
8.1%

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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