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Jaguar Xj vs Jaguar Xks portfolio auto: 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 Xks portfolio auto
92%
MOT pass rate · 6 vehicles
Verdict: On MOT pass rate the Jaguar Xj (77%) and Jaguar Xks portfolio auto (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Jaguar Xj Jaguar Xks portfolio auto
MOT pass rate 77% 92% ✓
MOT failure rate 23% 8% ✓
Faults & advisories per test 2.0 0.9 ✓
Dangerous-fault share 1% 1%
Average mileage 113,306 mi 49,177 mi
Sample size (vehicles) 80,612 6

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 Xks portfolio auto

  1. Engine covers fitted obscuring some components in the engine bay
  2. Under-trays fitted obscuring some underside components
  3. Nearside Rear Anti-roll bar ball joint dust cover severely deteriorated (5.3.4 (b) (i))
  4. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Offside Rear fog lamp has light sources not illuminating, but not more than 50% (1.3.2b)

Reliability FAQ

On MOT pass rate the Jaguar Xj (77%) and Jaguar Xks portfolio auto (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Jaguar Xj report Full Jaguar Xks portfolio auto 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.