2004 Jaguar XK8 4.2L Petrol · BU04 AAJ

The most recent DVSA MOT test for this 2004 Jaguar XK8 was conducted on 20 October 2025 and resulted in a pass with no advisories or defects recorded. Looking at the broader history, the vehicle has alternated between pass and fail outcomes on identical calendar dates in 2023 and 2024, with both failures also showing no recorded defects. This pattern strongly suggests the failures were administrative in nature, likely related to late presentation of the vehicle or missing documentation rather than genuine mechanical or structural non-compliance, and the subsequent retests passed cleanly. As the two most recent tests in 2024 and 2025 are both clean passes with no advisories, the overall maintenance trajectory appears stable, with no recurring defect categories that would indicate a chronic mechanical concern. With a recorded mileage of 58,270 miles over approximately 22 years, this XK8 has covered an average of around 2,649 miles annually, which is exceptionally low even for a luxury GT car. Such limited annual usage typically indicates either sporadic leisure use or extended periods of standing, both of which present their own mechanical considerations. The low mileage means that traditional wear items like brake pads, clutches, and timing chains are unlikely to be approaching end-of-service life through use alone, but the time the vehicle has spent off the road means age-related degradation of components is a far greater concern than mileage-based wear. It is also worth noting that the MOT records do not capture mileage progression, so a buyer should verify the odometer reading on the day of viewing against any available service history to confirm consistency and rule out any clerical anomaly. Given the clean MOT record but the very low annual mileage and the vehicle's age, a prospective buyer should focus on the issues that arise from prolonged standing rather than active wear. Tyres more than five or seven years old are prone to sidewall perishing and cracking even if the tread depth appears adequate, so the production date stamped on the sidewall should be checked and any tyres older than around six years considered for replacement regardless of remaining tread. Brake discs that have been left standing, particularly in damp British conditions, commonly suffer from surface corrosion and can lead to binding calipers or judder under braking; on a test drive, listen for scraping or grinding, feel for any pulsing through the pedal, and check for uneven resistance when rolling the car on level ground. The 12V battery is another priority, as low-use vehicles frequently suffer from chronic undercharging and a flat or weak battery can mask deeper electrical faults within the car's complex systems, including the XK8's throttle-by-wire and body control modules. Coolant, brake fluid, and gearbox fluid all degrade with calendar age rather than mileage, and given this car's age these should be regarded as due for renewal irrespective of any service interval, with brake fluid in particular being hygroscopic and capable of compromising braking performance if it has not been changed within the last two to three years. Finally, given the Jaguar XK8's known sensitivities as a twenty-two-year-old grand tourer, additional physical inspection points deserve attention. Polyurethane suspension bushes and compliance bushes harden and crack with age rather than mileage, leading to vague handling and clonking or creaking noises over uneven surfaces, while the front lower wishbone bushes and anti-roll bar drop links are particularly prone to deterioration on this chassis. Coil springs can fatigue or snap from prolonged load cycles even at low mileage, so the car should be examined at rest on level ground for any obvious sagging at one corner. Oil leaks from the timing chain tensioner area, valve cover gaskets, and the differential are common age-related concerns and worth inspecting on the undertray and surrounding casings. Beyond the mechanical checks, verifying a thorough service history with documented brake fluid, coolant, and gearbox oil changes will be reassuring, and a diagnostic scan using equipment capable of reading Jaguar-specific modules would be prudent to ensure there are no intermittent faults lurking beneath an outwardly clean MOT record.