Austin J4 vs Austin Metro l: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Austin J4
81%
MOT pass rate · 8 vehicles
Austin Metro l
66%
MOT pass rate · 153,180 vehicles
Verdict: On MOT pass rate the Austin J4 (81%) and Austin Metro l (66%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Austin J4 | Austin Metro l |
|---|---|---|
| MOT pass rate | 81% ✓ | 66% |
| MOT failure rate | 19% ✓ | 34% |
| Faults & advisories per test | 1.5 ✓ | 1.9 |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 54,854 mi | 58,961 mi |
| Sample size (vehicles) | 8 | 153,180 |
Most common faults
Austin J4
- Horn not working (1.6.2a)
- Steering system has slight free play detected at steering wheel (2.2.A.1a)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Battery insecure
- Nearside Front Suspension arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
- Offside Front Suspension arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
Austin Metro l
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Offside Front Subframe mounting prescribed area is excessively corroded (2.4.A.3)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front Subframe mounting prescribed area is excessively corroded (2.4.A.3)
- Parking brake: efficiency below requirements (3.7.B.7)
Reliability FAQ
On MOT pass rate the Austin J4 (81%) and Austin Metro l (66%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Austin J4 report Full Austin Metro 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.