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Jaguar 3.8 automatic vs Jaguar Xj: reliability comparison

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

Jaguar 3.8 automatic
57%
MOT pass rate · 1 vehicles
Jaguar Xj
77%
MOT pass rate · 80,612 vehicles
Verdict: On MOT pass rate the Jaguar 3.8 automatic (57%) 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 3.8 automatic Jaguar Xj
MOT pass rate 57% 77% ✓
MOT failure rate 43% 23% ✓
Faults & advisories per test 2.6 2.0 ✓
Dangerous-fault share 0% ✓ 1%
Average mileage 16,548 mi 113,306 mi
Sample size (vehicles) 1 80,612

Most common faults

Jaguar 3.8 automatic

  1. Windscreen washer provides insufficient washer liquid (8.2.3)
  2. Nearside Headlamp aim too low (1.8)
  3. Steering system excessively tight (2.2.D.1)
  4. Steering box has relative movement between sector shaft and the drop arm (2.2.B.1b)
  5. Offside Upper Front suspension ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt (2.4.G.2)
  6. Offside rear parking brake recording little or no effort (3.7.B.6a)

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 3.8 automatic (57%) and Jaguar Xj (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Jaguar 3.8 automatic 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.