Jaguar XK (X150) Common Problems & Reliability
The aluminum XK is arguably Jaguar’s most reliable modern era car, though it is plagued by small, annoying issues like the "duckbill" drain and battery sensitivity.
Select a Model Year Period
Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common Jaguar XK (X150) Faults & Repair Costs
Blocked "Duckbill" AC Drain
The rubber drain for the AC evaporator sticks shut, causing condensation to overflow into the passenger footwell.
Damp passenger carpets, Musty smell in cabin, Electrical glitches in the footwell modules
- Feel for moisture under the passenger floor mats
Water Pump Failure (5.0 V8)
The 5.0L engine has a notoriously weak water pump that can fail suddenly, leading to rapid overheating.
Low coolant warning, Sweet smell of coolant from the front of the car, Visible pink residue on the engine
- Inspect the front of the engine for coolant leaks
- Check service history for water pump replacement
CATS Active Damping Failure
The electronic components inside the adaptive dampers (standard on most X150s) tend to fail around 60,000 miles, causing the suspension to default to a fixed setting. The car may display a suspension fault warning and ride quality becomes noticeably harsher or inconsistent.
Suspension fault warning on dashboard, Harsh or inconsistent ride quality, Car does not adjust between comfort and sport modes
- Test the different suspension modes during the drive
- Check for suspension warning lights
- Look for oil leaking from the damper bodies
Electronic Parking Brake Failure
The electronic parking brake can fail around five years of age, typically due to motor or cable issues. The EPB warning light illuminates and the brake may not apply or release correctly, potentially leaving the car stuck or unable to park safely.
EPB warning light on dashboard, Parking brake fails to engage or release, Grinding noise when parking brake is applied
- Test the electronic parking brake on a hill
- Check for EPB fault messages on the dash
Pedestrian Bonnet System Sensor Fault
The bonnet is designed to pop up when pedestrian impact sensors detect a collision. Faulty sensors can trigger a dashboard warning light and, in rare cases, deploy the bonnet without an impact. The bonnet deployment can damage the hinges and the aluminium bonnet itself.
Pedestrian system warning light on dash, Bonnet deploys without an impact, Warning messages about pedestrian protection
- Check for pedestrian system warning lights
- Inspect the bonnet hinges for any signs of deployment
- Verify the front sensors have not been damaged
Buying a used Jaguar XK (X150)? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.