Jaguar Xj vs Jaguar Xk8 convertible s: 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 Xk8 convertible s
68%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Jaguar Xj (77%) and Jaguar Xk8 convertible s (68%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Jaguar Xj | Jaguar Xk8 convertible s |
|---|---|---|
| MOT pass rate | 77% ✓ | 68% |
| MOT failure rate | 23% ✓ | 32% |
| Faults & advisories per test | 2.0 | 1.8 ✓ |
| Dangerous-fault share | 1% ✓ | 3% |
| Average mileage | 113,306 mi | 97,345 mi |
| Sample size (vehicles) | 80,612 | 1 |
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 Xk8 convertible s
- Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))
- Central Front Oil leak, but not excessive (8.4.1 (a) (i))
- Front Inner Anti-roll bar pin or bush worn but not resulting in excessive movement "D" bushes noisy (5.3.4 (a) (i))
- Front Inner Anti-roll bar pin or bush worn but not resulting in excessive movement "D" bushes worn (5.3.4 (a) (i))
- Parking brake efficiency below requirements (1.4.2 (a) (i))
- Nearside Headlamp has a product on the lens but not seriously reducing light output (1.7.5a)
Reliability FAQ
On MOT pass rate the Jaguar Xj (77%) and Jaguar Xk8 convertible s (68%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Jaguar Xj report Full Jaguar Xk8 convertible s 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.