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Jaguar Xj vs Jaguar Xk140 f.h.c.: 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 Xk140 f.h.c.
50%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Jaguar Xj (77%) and Jaguar Xk140 f.h.c. (50%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Jaguar Xj Jaguar Xk140 f.h.c.
MOT pass rate 77% ✓ 50%
MOT failure rate 23% ✓ 50%
Faults & advisories per test 2.0 ✓ 4.8
Dangerous-fault share 1% 0% ✓
Average mileage 113,306 mi 2,287 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 Xk140 f.h.c.

  1. Parking brake: efficiency below requirements (3.7.B.7)
  2. Exhaust has a major leak of exhaust gases (7.1.2)
  3. Headlamp not working on dipped beam (1.7.5a)
  4. Headlamp not working on main beam (1.7.5a)
  5. Horn not working (1.6.2a)
  6. Offside Driver's seat fore and aft adjustment mechanism not functioning as intended. (6.2.A.3)

Reliability FAQ

On MOT pass rate the Jaguar Xj (77%) and Jaguar Xk140 f.h.c. (50%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Jaguar Xj report Full Jaguar Xk140 f.h.c. 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.