Bentley 3 4.50 vs Bentley Unknown: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Bentley 3 4.50
80%
MOT pass rate · 1 vehicles
Bentley Unknown
90%
MOT pass rate · 9,548 vehicles
Verdict: On MOT pass rate the Bentley 3 4.50 (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 3 4.50 | Bentley Unknown |
|---|---|---|
| MOT pass rate | 80% | 90% ✓ |
| MOT failure rate | 20% | 10% ✓ |
| Faults & advisories per test | 1.2 | 0.9 ✓ |
| Dangerous-fault share | 0% ✓ | 7% |
| Average mileage | 2,420 mi | 34,409 mi |
| Sample size (vehicles) | 1 | 9,548 |
Most common faults
Bentley 3 4.50
- Nearside Rear Direction indicator not working (1.4.A.2c)
- Nearside Rear position lamp(s) not working (1.1.A.3b)
- Nearside Stop lamp not working (1.2.1b)
- Offside Rear Direction indicator not working (1.4.A.2c)
- Offside Rear position lamp(s) not working (1.1.A.3b)
- Offside Stop lamp not working (1.2.1b)
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 3 4.50 (80%) and Bentley Unknown (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Bentley 3 4.50 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.