2004 Jaguar XJ 3.5L Petrol · ML04 UYJ

A pattern of progressive corrosion and structural wear dominates this XJ’s MOT record, climaxing in the 19 February 2025 failure where the suspension was recorded as inoperative, the bonnet retaining device was deemed excessively deteriorated, and both the engine management and electronic stability control lamps indicated faults. Earlier tests repeatedly flagged front and rear brake pipes as corroded and coated in grease, while the underside of the coolant radiator was noted as distorted on several occasions. Although the 31 January 2024 test showed only minor headlamp and mirror glass issues, the underlying trend is one of worsening component degradation rather than a stable or improving condition. At 208,759 mi the car averages roughly 9,500 mi per year, a figure that sits within normal usage for a vehicle of this age. The mileage progression appears steady, with no obvious gaps that would suggest prolonged storage, meaning the wear on consumables such as suspension bushings, brake components and drivetrain bearings is likely to be consistent with the recorded distance. High‑mileage operation amplifies the impact of the documented brake‑pipe corrosion and radiator distortion, as these parts are subjected to continual thermal and mechanical cycles. When inspecting the vehicle, give immediate attention to the brake system: look for any external rust on the front and rear pipes, feel for a soft or spongy pedal, and listen for hissing sounds that could indicate a leak. During a low‑speed drive, monitor for any pull to one side or uneven braking response, which would corroborate the corrosion advisories. The suspension should be examined for cracked or worn control arm bushes, loose ball joints and any play in the wishbones; a clunk or knock over bumps would confirm the dangerous failure noted in 2025. Verify that the bonnet latch engages securely and that the off‑side mirror is firmly mounted, as both were flagged as seriously damaged. Finally, confirm that the engine management light and ESC warning lamp are extinguished after a cold start and that no warning codes reappear after a short drive; persistent illumination would suggest unresolved electronic faults. Inspect the radiator’s lower section for signs of distortion, coolant leaks or overheating, especially around the front bulkhead. Given the extent of the recorded defects, a comprehensive pre‑purchase examination by a qualified mechanic is essential to quantify repair costs and to ensure that the vehicle can be returned to a safe, road‑worthy state.