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2003–2008 Jaguar XJ (X350/X351)

Browse our directory of 2003–2008 Jaguar XJ (X350/X351) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.

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Common Problems & Reliability

1
Serious
3
Moderate
0
Minor

The 2003–2008 Jaguar XJ (X350/X351) has 4 known issues. 1 of these are classified as serious faults that could be expensive to repair. 3 are moderate concerns worth inspecting before purchase.

Air Suspension Failure

Serious

Air struts leak or the compressor fails to reach pressure, leaving the car "slammed" on its bump stops.

Symptoms: "Air Suspension Fault" message, Car sitting low on one or more corners after being parked...

Est. repair cost: £400–£1,200

Aluminum Corrosion (X350)

Moderate

Although it won’t rust like steel, the X350 suffers from galvanic corrosion, appearing as bubbling paint around the wheel arches and boot lid.

Symptoms: Bubbling paint, White powdery residue under paint chips

Est. repair cost: £400–£1,000

ZF Gearbox Surging & Lurch

Moderate

The ZF six-speed automatic gearbox can develop surging on light throttle at 30-50mph and harsh lurching into gear when coming to a stop. This is typically caused by torque converter clutch issues or outdated TCM software and can often be resolved with a software reflash and fresh fluid.

Symptoms: Surging or hunting at steady throttle speeds, Harsh lurch when coming to a stop...

Est. repair cost: £250–£800

Door Lock & Window Regulator Failures

Moderate

The door lock actuators and window regulators are common failure points on the X350. Lock failures can leave doors stuck in the double-locked position, while window regulators fail with the cable-driven mechanism snapping or the motor burning out.

Symptoms: Door fails to lock or unlock, Window drops into the door panel...

Est. repair cost: £150–£400 per door

View detailed Jaguar XJ (X350/X351) fault guide

Buying Tips for the 2003–2008 Jaguar XJ (X350/X351)

  • ✓On X350 models, look for "white powder" under the paint; this is aluminum corrosion (oxidization) and is common on rivets.
  • ✓On X351 models (2010+), check the sunroof for popping or creaking sounds—a common issue often requiring new subframe bolts.
  • ✓The 3.0D V6 (X351) is a powerhouse but check for any signs of crankshaft issues or oil dilution.

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