2004 Jaguar XJ 4.2L Petrol · LA53 AEM

Recurring suspension component deterioration and persistent air suspension fault warnings define the mechanical profile of this Jaguar XJ, which passed its most recent inspection on 29 July 2026. The MOT history reveals a long-term pattern of deteriorating rubber dust covers on the rear anti-roll bar ball joints and outer suspension rod ball joints, a trend that has appeared in various forms across almost every annual test since 2021. While the vehicle has maintained a passing status, the repeated advisories regarding rear suspension corrosion and air suspension fault lights appearing on the dashboard suggest ongoing issues with the chassis and pneumatic systems that require close monitoring. The vehicle has covered 149,847 miles over its approximately 22-year lifespan, representing an average annual usage of roughly 6,811 miles. This relatively low annual mileage is consistent with a vehicle that is not subjected to heavy daily commuting, but the recorded history shows that even with lower frequency of use, specific components like suspension bushings and rubber seals are reaching the end of their service life. The steady accumulation of mileage alongside these recurring advisories indicates that while the vehicle is not being driven extensively, the age-related degradation of rubber and metal components remains a primary factor in its roadworthiness profile. A prospective buyer should pay particular attention to the rear suspension assembly and the air suspension system. The records show a history of air suspension fault lights being flagged, which can indicate issues with compressors, airbags, or sensor functionality. During a test drive, listen for any unusual knocking or clunking sounds from the rear when driving over uneven surfaces or speed bumps, which would correlate with the documented deterioration of the anti-roll bar ball joints and suspension rod dust covers. Additionally, monitor the vehicle's ride height stability to ensure the air suspension is maintaining a consistent level without sagging or hunting for height. Further inspection is required regarding the reported oil leak near the front lower oil filter and the ongoing advisories for rear underbody corrosion. The presence of corrosion on rear suspension components and the underbody should be assessed for structural integrity, as these issues have been noted in multiple consecutive years. On the road, check for any uneven tyre wear or pulling to one side, given the previous advisories for tyres worn close to the legal limit and edge wear. Finally, verify the operation of the braking system, as the history includes advisories for thin brake pads and pitted or scored front brake discs, which may manifest as pedal judder or increased stopping distances.