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Jaguar Soverein vs Jaguar Xj: reliability comparison

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

Jaguar Soverein
58%
MOT pass rate · 1 vehicles
Jaguar Xj
77%
MOT pass rate · 80,612 vehicles
Verdict: On MOT pass rate the Jaguar Soverein (58%) 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 Soverein Jaguar Xj
MOT pass rate 58% 77% ✓
MOT failure rate 42% 23% ✓
Faults & advisories per test 2.8 2.0 ✓
Dangerous-fault share 0% ✓ 1%
Average mileage 113,655 mi 113,306 mi
Sample size (vehicles) 1 80,612

Most common faults

Jaguar Soverein

  1. Exhaust has a minor leak of exhaust gases (7.1.2)
  2. Nearside Headlamp aim too low (1.8)
  3. both front tyres low on inner edges.
  4. n/s/f seat belt stalk broken but still working.
  5. damage to n/s rear tyre outer sidewall
  6. damage to o/s lower screen

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 Soverein (58%) and Jaguar Xj (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Jaguar Soverein 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.