Kia Sorento vs Mercedes-Benz Ml
On MOT-testable defects, the Mercedes-Benz Ml (fail rate 19.6%) performed better than the Kia Sorento (21.7%) across comparable years. The biggest divergence was steering, where the Sorento recorded failures more often.
21.7%
Sorento fail rate
19.6%
Ml fail rate
2.14pp
Difference
Side by side
| Metric | Kia Sorento | Mercedes-Benz Ml |
|---|---|---|
| MOT tests analysed | 217,118 | 214,052 |
| Pass rate | 78.3% | 80.4% |
| Fail rate | 21.7% | 19.6% |
Where they differ
| Category | Sorento | Ml |
|---|---|---|
| Steering | 3.9% | 0.0% |
| Emissions & environmental | 0.0% | 3.4% |
| Suspension | 8.8% | 6.7% |
| Lighting & signalling | 9.1% | 10.9% |
| Brakes | 8.8% | 7.2% |
| Tyres | 4.7% | 4.6% |
Methodology & source. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.