2003 Jaguar XJ 3.0L Petrol · MT53 ONN

The vehicle currently presents as roadworthy, but the maintenance trend indicates a shift toward structural concerns that require close monitoring. The most recent test in October 2021 at 64,709 miles resulted in a failure due to corrosion on the rear sub-frame. While the vehicle passed the re-test immediately, the presence of rust on a primary structural component suggests that degradation is beginning to accelerate. There are no MOT records for nearly five years, leaving the current state of these components unverified. The mileage profile is exceptionally low for a 23-year-old Jaguar, averaging approximately 2,800 miles per year. Between October 2018 and October 2021, the car covered only 4,825 miles, confirming a pattern of very infrequent use. While this low mileage often preserves mechanical components like the drivetrain and engine, it frequently leads to the degradation of rubber-based parts and the accumulation of surface corrosion. The gap in testing since 2021 is a significant risk for a vehicle that sits stationary for long periods. A physical inspection must prioritize the rear sub-frame to determine if the corrosion has progressed beyond the point previously flagged under section 5.3.3(b). The buyer should also examine the suspension bushes and rubber hoses, which often perish from age and cracking regardless of low mileage. Given the 2018 advisory regarding a worn nearside rear tyre, the alignment geometry should be checked to ensure that uneven wear was not caused by underlying suspension faults during the years of low use.