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 data covers the model. A VIN history report covers the exact Daihatsu Sirion 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.

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 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 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 2024 period. "Condition" covers cosmetic / wear issues; suspension and braking dominate the rest.

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