Bentley T11 vs Bentley Unknown: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Bentley T11
80%
MOT pass rate · 1 vehicles
Bentley Unknown
90%
MOT pass rate · 9,548 vehicles
Verdict: On MOT pass rate the Bentley T11 (80%) and Bentley Unknown (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Bentley T11 | Bentley Unknown |
|---|---|---|
| MOT pass rate | 80% | 90% ✓ |
| MOT failure rate | 20% | 10% ✓ |
| Faults & advisories per test | 0.7 ✓ | 0.9 |
| Dangerous-fault share | 0% ✓ | 7% |
| Average mileage | 208,258 mi | 34,409 mi |
| Sample size (vehicles) | 1 | 9,548 |
Most common faults
Bentley T11
- Parking brake: efficiency below requirements (3.7.B.7)
- steel brake pipes to rear becoming corroded
- handbrake effo/o down to mim +travel needs attention
- Centre Exhaust has part of the system slightly deteriorated (7.1.1a)
- Rear Parking brake: parking brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.7)
- Offside Front Ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt (2.2.C.1c)
Bentley Unknown
- COVID-19 6 MONTH EXTENSION
- Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))
- Parking brake: efficiency below requirements (3.7.B.7)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Oil leak
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
Reliability FAQ
On MOT pass rate the Bentley T11 (80%) and Bentley Unknown (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Bentley T11 report Full Bentley Unknown 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.