2000 Jaguar XJ 3.2L Petrol · X664 AVJ

A 2000 Jaguar XJ presenting with a notably sparse MOT history carries an ambiguous mechanical signal that warrants careful interpretation. The most recent entry on 21 October 2021 recorded a pass with no advisories or defects, which on the surface is reassuring, yet this clean result follows immediately after a failure recorded just ten days earlier on 11 October 2021. That same failure entry also lists no defects, which is an unusual administrative pattern suggesting either a retest after repair, a withdrawn application, or a record-keeping irregularity rather than a substantive mechanical rectification. Without any recorded advisory data spanning the testing history, it is impossible to build a component-by-component wear profile, and the absence of recorded observations on a vehicle of this age and complexity should itself prompt a heightened level of physical inspection before purchase. The mileage profile of approximately 126,337 miles accumulated over 26 years equates to roughly 4,859 miles annually, which is markedly low for a luxury saloon of this era and well below typical UK averages. There is also a conspicuous absence of MOT tests between the 2021 entries and the present date, meaning the vehicle has not been presented for statutory testing for nearly five years. A car of this standing with such low annual mileage and a prolonged testing absence raises the strong likelihood of extended periods off the road, during which rubber components, fluid seals, and electronic modules can degrade silently. Equally, the lack of intermediate annual tests means there is no DVSA-verified evidence of roadworthiness between 2021 and 2026, leaving the current mechanical state effectively uncertified by official inspection. For a prospective buyer, the priorities on physical inspection should mirror the well-documented weak points of the X308-generation XJ. Pay particular attention to the suspension geometry, specifically the front wishbones, radius arms, and anti-roll bar bushes, which are prone to perishing and play on low-mileage cars left stationary. On a test drive, listen for clonking or knocking over uneven surfaces, feel for imprecise steering with vague self-centring, and check for uneven tyre wear that would betray compromised geometry. Examine the brake system comprehensively, including the discs, pads, flexible hoses, and the rear caliper handbrake mechanism, as binding calipers and seized handbrake cables are common after long standing periods. Equally important is a thorough examination of the engine bay and underbody for any signs of coolant weepage from the plastic inlet manifold, oil misting from the cam cover gaskets, and corrosion on the subframe mounting points and rear axle assemblies. The Nikasil-lined cylinder bores on early XJ V8s are also known to be susceptible to bore glazing and liner wear, so ensure the engine reaches temperature quickly and runs smoothly without excessive smoke on overrun. Test every electrical function methodically, including the infotainment, climate control, seat motors, and window regulators, as the XJ's complexity means faults accumulate with age. Finally, confirm the vehicle's service history directly with documentation rather than relying solely on MOT records, given the sparse testing profile and the age-related demands of maintaining a car of this calibre.