1984 Jaguar XJ 4.2L Petrol · B733 KPH

A 42 year old Jaguar XJ with only three recorded MOT tests over the past several years presents a usage profile defined by long periods off the road rather than continuous driving. The most recent test on 12 April 2023 was a pass, but it was conducted only six days after a failure on 6 April 2023, indicating the vehicle was repaired and re-presented within the same week. That earlier failure raised three major defects centred on the parking brake system and front wiper effectiveness, and the parking brake issues in particular suggest the cable mechanism, rear caliper actuation, or drum/shoe adjustment on the offside rear may have been binding or seized — a common concern on a car of this vintage that can quickly return if not fully refurbished. The same test cycle also recorded an advisory for underbody corrosion, the only such entry across the supplied history but a meaningful one given the age of the vehicle. The recorded mileage of 63,135 miles against a 1984 registration implies an average accumulation of roughly 1,503 miles per year, which is exceptionally low and points to extended periods of stationary storage. The MOT history shows testing in 2022 and 2023 only, with no recorded tests before or between those visits, suggesting the car may have been off the road and unexamined for several years prior to 2022. Such low annual mileage and intermittent testing typically means that consumable wear from road use is minimal, but rubber components, seals, brake hydraulics, fuel system internals, and bodywork suffer disproportionately from standing. The advisories and failures observed are therefore more consistent with deterioration through inactivity than with high-mileage mechanical fatigue. A prospective buyer should focus the pre-purchase inspection on the items actually flagged in the MOT record. With the parking brake having failed on both efficiency and on the offside rear, the rear caliper or brake drum mechanism, handbrake cable, and any self-adjusting components should be physically examined for free movement, full application, and even pull on both sides. Confirm the front wiper linkage and motor operate across all speeds without leaving arcs on the glass, as a failing wiper in an MOT suggests worn spindles or perished drive components. The underbody corrosion advisory warrants a thorough examination on a ramp, looking closely at the jacking points, sill outriggers, rear subframe mounting areas, and any structural sections near the suspension pick-up points, as corrosion in these locations progresses between tests and is a known concern on XJ saloons of this era. On the test drive, listen carefully for clonks or knocks from the front suspension over uneven surfaces, particularly from the lower wishbone bushes, anti-roll bar drop links, and front subframe mountings, which are common wear points that would not yet have generated MOT advisories but warrant inspection on a car that has stood. Feel for any pulling under braking, which can indicate a seized front caliper after long periods of inactivity, and check for a soft or sinking brake pedal that may point to master cylinder seal deterioration from disuse. Steering should be precise without excess play, as the rack and pinion seals on these vehicles can harden and leak when left standing. Finally, verify that the engine reaches temperature promptly and holds it steadily, as coolant hoses, thermostat seals, and water pump internals are vulnerable to drying out, and confirm there are no visible fluid leaks beneath the car immediately after a warm drive, given the high likelihood of aged gaskets and unions throughout the drivetrain.