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Jaguar Sovereion vs Jaguar Xj: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Jaguar Sovereion
71%
MOT pass rate · 1 vehicles
Jaguar Xj
77%
MOT pass rate · 80,612 vehicles
Verdict: On MOT pass rate the Jaguar Sovereion (71%) and Jaguar Xj (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Jaguar Sovereion Jaguar Xj
MOT pass rate 71% 77% ✓
MOT failure rate 29% 23% ✓
Faults & advisories per test 2.9 2.0 ✓
Dangerous-fault share 0% ✓ 1%
Average mileage 52,025 mi 113,306 mi
Sample size (vehicles) 1 80,612

Most common faults

Jaguar Sovereion

  1. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Nearside Front Front wheel bearing has slight play (2.5.A.3c)
  6. Offside Parking brake: parking brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.7)

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)

Reliability FAQ

On MOT pass rate the Jaguar Sovereion (71%) and Jaguar Xj (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Jaguar Sovereion report Full Jaguar Xj 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.