Citroen C1 vs Toyota Aygo
On MOT-testable defects the Toyota Aygo comes out ahead: 15.3% of its tests record a failure against 18.7% for the Citroen C1, a 3.4-point gap. The biggest single difference is lighting & signalling, where the C1 records failures noticeably more often.
18.7%
C1 fail rate
15.3%
Aygo fail rate
3.4pp
Difference
Side by side
| Metric | Citroen C1 | Toyota Aygo |
|---|---|---|
| MOT tests analysed | 1,005,242 | 1,428,093 |
| Pass rate | 81.3% | 84.7% |
| Fail rate | 18.7% | 15.3% |
Where they differ
| Category | C1 | Aygo |
|---|---|---|
| Lighting & signalling | 10.5% | 8.3% |
| Brakes | 7.7% | 6.3% |
| Tyres | 5.3% | 4.6% |
| Suspension | 4.5% | 4.0% |
| Visibility | 4.0% | 3.7% |
Methodology & source. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.