2016 Jaguar XJ 3.0L Diesel · BT66 ABK

The Jaguar XJ’s most recent MOT test on 2025-06-06 confirms it remains roadworthy, with no defects recorded at 139,451 miles. This consistency across five consecutive annual tests—including a near-miss failure in June 2023—suggests either meticulous servicing or a vehicle that has avoided major mechanical failures. The absence of advisories or recurring issues in the latest tests implies the tester did not identify any pressing concerns, though this does not preclude hidden wear. The pattern of passing without fail suggests the previous owner has likely addressed basic maintenance, but the high mileage demands scrutiny of high-wear components. The recorded mileage of 139,451 miles over ten years equates to approximately 13,945 miles annually, which is elevated for a vehicle of this age. The gap between tests is uniform, with no extended periods of inactivity or rapid mileage spikes—each test occurs within a few days of the previous year’s anniversary. This regularity suggests consistent use rather than neglect, though it also implies accelerated wear on suspension bushes, coil springs, and brake calipers. The lack of a pre-MOT service record means no external verification of maintenance, leaving critical components like the drivetrain and exhaust system unconfirmed. Given the high mileage and the vehicle’s age, a buyer should prioritise an independent inspection of the suspension geometry, particularly the rear bushes and coil springs, which are prone to fatigue at this mileage. The brakes, while not failed in MOTs, may exhibit uneven wear or binding calipers—common in high-mileage Jaguars—so a thorough brake fluid flush and disc inspection are essential. Structural integrity should also be assessed for corrosion, especially around the sills, wheel arches, and subframe, as these areas are critical for long-term safety. The absence of emissions-related failures does not rule out catalytic converter efficiency issues, which often develop gradually and may not trigger a fail until later stages.