Austin Big seven vs Austin Montego l: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Austin Big seven
94%
MOT pass rate · 17 vehicles
Austin Montego l
69%
MOT pass rate · 153,789 vehicles
Verdict: On MOT pass rate the Austin Big seven (94%) and Austin Montego l (69%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Austin Big seven | Austin Montego l |
|---|---|---|
| MOT pass rate | 94% ✓ | 69% |
| MOT failure rate | 6% ✓ | 31% |
| Faults & advisories per test | 0.3 ✓ | 2.0 |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 80,368 mi | 87,961 mi |
| Sample size (vehicles) | 17 | 153,789 |
Most common faults
Austin Big seven
- Nearside Front Headlamp not working on dipped beam (1.7.5a)
- Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
- Offside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
- Front Vehicle structure has slight corrosion (6.1.B.2)
- Vehicle structure has slight corrosion (6.1.B.2)
- Nearside Front wheel bearing has slight play (2.5.A.3c)
Austin Montego l
- Oil leak
- Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Nearside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
- Parking brake: efficiency below requirements (3.7.B.7)
- oil leak
Reliability FAQ
On MOT pass rate the Austin Big seven (94%) and Austin Montego l (69%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Austin Big seven report Full Austin Montego l 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.