League table/CZ
Make report · 2005–2025
CZ
84.3%
first-time pass rate
9.8%
failed outright
2,628
MOT tests, 2005–2025
CZ at a glance
Most reliable model
175
87.7% pass
Least reliable model
125
78.9% pass
Most tested model
125
724 tests
Among CZ models with ≥ 100 tests.
What fails a CZ
failure defects across all CZ models · advisories excluded
lighting and signalling is CZ's most common failure — 5% of all CZ tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| lighting and signalling |
|
5 | see ranking |
| steering and suspension |
|
4.2 | see ranking |
| brakes |
|
3.1 | see ranking |
| tyres and wheels |
|
1.5 | see ranking |
| body and structure |
|
1.1 | see ranking |
Top failure groups aggregated across every CZ model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
CZ models, ranked by test volume
4 models with ≥ 100 normal tests, 2005–2025
| Model | Pass rate | Pass % | Fail % | Median miles | Tests |
|---|---|---|---|---|---|
| 125 |
|
78.9 | 16.2 | 8,490 | 724 |
| 175 |
|
87.7 | 6.5 | 11,389 | 324 |
| 250 |
|
85.4 | 8.9 | 9,742 | 315 |
| 350 |
|
85.9 | 5.5 | 18,016 | 128 |
Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.