2004 Jaguar XJ 3.0L Petrol · PN54 ABZ

The Jaguar XJ has maintained a consistent roadworthiness record over the past five MOT cycles, with each test concluding without defects or advisories. The most recent inspection on 2025-08-29 at 105,869 miles confirmed no issues, reinforcing a stable trend of compliance with UK roadworthiness standards. While this suggests the vehicle has avoided major mechanical failures, the absence of advisories also implies that even minor concerns—such as worn suspension bushes or subtle corrosion—may have been overlooked during testing. Buyers should treat this as a baseline of passing rather than pristine , particularly given the vehicle’s age and the reliance on annual MOT thresholds rather than preventive maintenance. The recorded mileage of 105,869 miles over 21 years, averaging just 4,812 miles annually, is unusually low for a vehicle of this age. The incremental increases between tests—ranging from 1,032 to 2,131 miles per year—indicate prolonged periods of inactivity rather than consistent use. The gap between the 2021 and 2022 tests, for example, saw only 964 miles logged, suggesting the car may have stood unused for extended periods. While low mileage can mitigate some wear, it also raises questions about fluid degradation (brakes, power steering, transmission) and potential stagnation-related issues, such as seized suspension components or degraded rubber seals. Given the lack of recorded defects, the primary focus for an in-person inspection should centre on components prone to silent deterioration in low-mileage, older vehicles. The suspension—particularly rear coil springs, bushes, and track rods—should be examined for dry rot or excessive play, as these often fail without prior warning. Brake calipers and discs, though not flagged in MOTs, may exhibit uneven wear or corrosion if the vehicle has been left stationary for long stretches. Structural integrity is another critical area; the underbody, wheel arches, and sills should be scrutinised for corrosion, especially around the rear axle and wheel housings, where moisture accumulation is common. Finally, the exhaust system warrants close inspection for leaks or rust-through, as this is a frequent failure point in older Jaguars with inconsistent maintenance histories.