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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

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Nearside Front wheel bearing has slight play (2.5.A.3c)
  6. Offside Front wheel bearing has slight play (2.5.A.3c)

Jaguar Xk8 convertible s

  1. Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))
  2. Central Front Oil leak, but not excessive (8.4.1 (a) (i))
  3. Front Inner Anti-roll bar pin or bush worn but not resulting in excessive movement "D" bushes noisy (5.3.4 (a) (i))
  4. Front Inner Anti-roll bar pin or bush worn but not resulting in excessive movement "D" bushes worn (5.3.4 (a) (i))
  5. Parking brake efficiency below requirements (1.4.2 (a) (i))
  6. 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.