1987 Jaguar XJS 5.3L Petrol · E583 FJX

The most recent MOT test on 2025-09-16 confirms the Jaguar XJS remains roadworthy, with no defects recorded at 17,313 miles. This represents a stable maintenance trend over the past decade, as every test since 2017 has passed without fail. The 2022 failure at 17,222 miles—though unusual—was not documented with specific defects, suggesting either a minor oversight or a temporary administrative error. The vehicle’s compliance with emissions and structural checks in the latest test indicates no immediate cause for concern, though the low mileage raises questions about long-term neglect of high-wear components. The recorded mileage of 17,313 miles over 39 years equates to an average of just 444 miles annually, a figure far below typical usage patterns for this age. The gap between tests—particularly the three-year interval between 2019 and 2022—suggests prolonged periods of inactivity, which could accelerate deterioration of suspension bushes, coil springs, and rubber seals. The absence of mileage progression between 2017 and 2019 (16,906 to 17,167 miles) implies the vehicle may have been stored for extended periods, increasing the risk of corrosion in wheel arches, underbody, and body seams. A prospective buyer should prioritise a thorough inspection of suspension components, including the condition of rear coil springs and front/rear bushes, as these are prone to degradation even with minimal use. The brakes, while not flagged in recent tests, warrant close examination for uneven wear or binding calipers, particularly given the 2022 failure’s ambiguity. Structural integrity should be assessed for signs of rust penetration in the chassis or sills, especially if the vehicle was stored in damp conditions. Finally, the electrical system and emissions controls—though historically compliant—should be verified, as older Jaguar models often develop intermittent faults in sensors or injectors over time.