Common Problems with the
2003 Jaguar XJ8 / XJR (X308)

Buying Tips for 2003 Jaguar XJ8 / XJR (X308)

• Confirm through invoices that the upper secondary timing chain tensioners have been replaced with third-generation metal components to prevent sudden catastrophic engine failure.
• On naturally aspirated 3.2 and 4.0 models with the ZF 5HP24 gearbox, verify that forward drive engages immediately from cold without rev flaring or transmission limp-home warnings.
• Check engine temperature behaviour carefully; original plastic water pump impellers can disintegrate without warning, causing sudden severe overheating and warped cylinder heads.
• Inspect front lower wishbone ball joints, anti-roll bar drop links, and rear subframe bushes, which wear rapidly under the weight of the V8 luxury chassis.
• Test every electrical circuit including the central locking, electric memory steering column rake motors, and dual-zone climate control blend flaps for smooth operation.