1998 Jaguar XJR 4.0L Petrol · S950 AHR

The most recent DVSA MOT recorded for the 1998 Jaguar XJR was on 24 November 2021 and it was passed with no defects noted. With only a single MOT entry available, it is impossible to chart a definitive maintenance trend; the absence of any recorded faults suggests the vehicle was in a satisfactory state at that date, but the lack of subsequent MOT data means the current condition cannot be confirmed and could have changed since then. At 139,042 miles the car has covered roughly 4,966 miles per year over its 28‑year life, a figure well below the average for a vehicle of this vintage. Such low annual mileage often indicates periods of light use or extended storage, which can be beneficial for wear‑related components but also raises the likelihood of age‑related deterioration of rubber, seals and corrosion‑prone parts. The relatively modest mileage does not eliminate the need to inspect for the effects of time, especially where the car may have sat idle for long stretches. A prospective buyer should give particular attention to the tyre condition, inspecting tread depth and, more importantly, the sidewalls for cracking, dry‑rot or perishing that can develop with age even on low‑mileage tyres. The 12‑volt battery should be load‑tested and its terminals examined for corrosion, as prolonged inactivity can reduce capacity and cause terminal wear. Underbody inspection is essential: look for rust on the chassis rails, suspension mounting points and the exhaust system, and check that all suspension bushes, ball joints and coil springs are free of dry‑rot and excessive play. The steering rack and associated boots should be examined for any signs of fluid leakage, a common issue on older Jaguars. The braking system warrants a thorough check: inspect the discs for surface rust or uneven wear, ensure the pads have sufficient thickness, and verify that the calipers move freely without binding. Brake fluid should be replaced if it has been more than two years, as hygroscopic fluid degrades with age. Coolant should be examined for colour and sediment and flushed if the service interval has been exceeded, while the engine oil should be fresh and the oil filter new. Although the XJR employs a timing chain, the tensioner and associated guides should be inspected for wear, and a compression test can reveal any early signs of head‑gasket fatigue. Finally, confirm that the service book contains regular stamps and that any major items such as water‑pump or suspension overhauls have been recorded, or be prepared to commission a full pre‑purchase inspection by a Jaguar specialist.