Jaguar Xj vs Jaguar Xk120 ots: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Jaguar Xj
77%
MOT pass rate · 80,612 vehicles
Jaguar Xk120 ots
84%
MOT pass rate · 3 vehicles
Verdict: On MOT pass rate the Jaguar Xj (77%) and Jaguar Xk120 ots (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Jaguar Xj | Jaguar Xk120 ots |
|---|---|---|
| MOT pass rate | 77% | 84% ✓ |
| MOT failure rate | 23% | 16% ✓ |
| Faults & advisories per test | 2.0 | 0.6 ✓ |
| Dangerous-fault share | 1% | 0% ✓ |
| Average mileage | 113,306 mi | 13,743 mi |
| Sample size (vehicles) | 80,612 | 3 |
Most common faults
Jaguar Xj
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front wheel bearing has slight play (2.5.A.3c)
- Offside Front wheel bearing has slight play (2.5.A.3c)
Jaguar Xk120 ots
- Oil leak
- Nearside Front wheel bearing has slight play (2.5.A.3c)
- Offside Front wheel bearing has slight play (2.5.A.3c)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- rear brakes slightly uneven on application
- Nearside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)
Reliability FAQ
On MOT pass rate the Jaguar Xj (77%) and Jaguar Xk120 ots (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Jaguar Xj report Full Jaguar Xk120 ots 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.