Skip to content

Jaguar Mk10 420g vs Jaguar Xj: reliability comparison

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

Jaguar Mk10 420g
67%
MOT pass rate · 1 vehicles
Jaguar Xj
77%
MOT pass rate · 80,612 vehicles
Verdict: On MOT pass rate the Jaguar Mk10 420g (67%) 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 Mk10 420g Jaguar Xj
MOT pass rate 67% 77% ✓
MOT failure rate 33% 23% ✓
Faults & advisories per test 1.0 ✓ 2.0
Dangerous-fault share 0% ✓ 1%
Average mileage 54,260 mi 113,306 mi
Sample size (vehicles) 1 80,612

Most common faults

Jaguar Mk10 420g

  1. Nearside Front Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt (2.4.G.2)
  2. Nearside Front wheel bearing has excessive play (2.5.A.3c)
  3. Nearside Rear Brake pad(s) less than 1.5 mm thick (3.5.1g)
  4. Offside Front Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt (2.4.G.2)
  5. Windscreen washer provides insufficient washer liquid (8.2.3)
  6. nearside rear brake disc scored

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 Mk10 420g (67%) and Jaguar Xj (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Jaguar Mk10 420g 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.