Reliability Report · Multi-Source Data

Daihatsu Sirion Reliability

The Daihatsu Sirion (current generation) scores 75/100 on our composite reliability index — good territory — drawn from DVSA data.

Composite Score
75
/ 100
Good
Sources: DVSA · latest 2024
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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.

DVSA MOT (UK Inspections)
Model years 2004–2014 · 2024 report · n=7317
7,317 UK MOT tests · overall 35.7% fail rate vs UK fleet baseline
View source ↗
73
/ 100
DVSA MOT (UK Inspections)
Model years 2003–2013 · 2023 report · n=6037
6,037 UK MOT tests · overall 31.3% fail rate vs UK fleet baseline
View source ↗
77
/ 100

UK MOT Reliability Detail

Based on 7,317 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 10–14 yrs
80
24.5% fail vs 32.1% fleet
139 tests
Age 15–20 yrs
73
35.9% fail vs 38.8% fleet
7,178 tests

Most Common MOT Failure Categories

#1
Ball joint
1,327
26.8%
#2
Headlamp
1,310
26.5%
#3
Joints
1,004
20.3%
#4
Component mounting prescribed areas
699
14.1%
#5
Wipers
607
12.3%

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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