League table/SIAMOTO
Make report · 2005–2025
SIAMOTO
66.9%
first-time pass rate
25.7%
failed outright
1,514
MOT tests, 2005–2025
SIAMOTO at a glance
Most reliable model
GECO
69.8% pass
Least reliable model
FAVOURITE
69.2% pass
Most tested model
FAVOURITE
393 tests
Among SIAMOTO models with ≥ 100 tests.
What fails a SIAMOTO
failure defects across all SIAMOTO models · advisories excluded
lighting and signalling is SIAMOTO's most common failure — 14.7% of all SIAMOTO tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| lighting and signalling |
|
14.7 | see ranking |
| brakes |
|
12.4 | see ranking |
| steering and suspension |
|
9.8 | see ranking |
| tyres and wheels |
|
3.4 | see ranking |
| drive system |
|
1.9 | see ranking |
Top failure groups aggregated across every SIAMOTO model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
SIAMOTO models, ranked by test volume
2 models with ≥ 100 normal tests, 2005–2025
| Model | Pass rate | Pass % | Fail % | Median miles | Tests |
|---|---|---|---|---|---|
| FAVOURITE |
|
69.2 | 23.7 | 2,916 | 393 |
| GECO |
|
69.8 | 23.4 | 6,684 | 192 |
Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.
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