1984 Jaguar XJ 3.4L Petrol · A745 RVS

The latest MOT recorded on 29 June 2022 was a pass, following a failure earlier that same month. The failure was due to both nearside and offside front service brakes binding excessively. While the vehicle passed the subsequent test, the maintenance trend shows signs of emerging issues rather than a stable history. The transition from a major brake failure to advisories regarding power steering seepage and marginal parking brake effort suggests that while the immediate safety failures were rectified, the vehicle is entering a phase where component degradation is becoming more prevalent. With 91,563 miles covered over approximately 42 years, this Jaguar has averaged roughly 2,180 miles per year. This is exceptionally low mileage for a vehicle of this vintage. While low mileage can suggest a well-preserved chassis and engine, it also implies long periods of inactivity or very infrequent use. Mechanically, this presents specific risks. Components that rely on regular movement to stay lubricated or to prevent oxidation may be prone to seizing. Low usage often leads to more age-related degradation than wear-related degradation, meaning the vehicle's condition is likely dictated by its service history and storage environment rather than the odometer reading. The recorded advisories require careful scrutiny during a physical inspection and test drive. The seepage from the offside power steering component indicates a potential failure of seals or hoses, which could lead to a loss of hydraulic pressure or a messy leak under load. You should check the engine bay for oily residue and listen for any whining or groaning from the power steering pump when turning the wheel at low speeds. Furthermore, the advisory regarding the parking brake minimum effort suggests that the mechanism, likely including cables, shoes, or drums, is nearing the end of its effective range. During the test drive, ensure the handbrake holds the vehicle firmly on an incline and check for any dragging or unevenness in braking performance. Given the low annual mileage, you must look beyond the mechanical components for signs of age-related perishing. Inspect the tyre sidewalls thoroughly for any signs of cracking or dry rot, as rubber degrades over time regardless of tread depth. Check the underside of the vehicle for surface corrosion or signs of fluid leaks from various seals, particularly given the power steering advisory. It is also vital to verify the service book for evidence of calendar-based maintenance, such as regular oil changes and coolant flushes, which are more critical than mileage-based intervals for a car used this sparingly. Finally, inspect the brake discs for heavy corrosion or pitting, which can occur when a vehicle sits idle for extended periods, potentially leading to uneven braking or pedal shudder.