Bentley Bentayga vs Bentley Series 1 fast back: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Bentley Bentayga
95%
MOT pass rate · 3,152 vehicles
Bentley Series 1 fast back
100%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Bentley Bentayga (95%) and Bentley Series 1 fast back (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Bentley Bentayga | Bentley Series 1 fast back |
|---|---|---|
| MOT pass rate | 95% | 100% ✓ |
| MOT failure rate | 5% | 0% ✓ |
| Faults & advisories per test | 0.4 | 0.0 ✓ |
| Dangerous-fault share | 4% | — ✓ |
| Average mileage | 41,382 mi | 16,264 mi |
| Sample size (vehicles) | 3,152 | 1 |
Most common faults
Bentley Bentayga
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
- COVID-19 6 MONTH EXTENSION
Bentley Series 1 fast back
No fault breakdown available.
Reliability FAQ
On MOT pass rate the Bentley Bentayga (95%) and Bentley Series 1 fast back (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Bentley Bentayga report Full Bentley Series 1 fast back report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.