2003 Jaguar XJ 3.0L Petrol · Y123 ADL

The 2003 Jaguar XJ presents a stable roadworthiness profile, with the most recent MOT on 2025-06-17 confirming no defects at 103,727 miles. The prior three tests from 2024 to 2023 also showed no issues, suggesting consistent maintenance. However, a failure entry on 2023-06-07 at 103,244 miles is recorded without defects, raising questions about the accuracy of that test. Overall, the trend indicates no emerging mechanical risks in the last three years. The vehicle’s mileage of 103,727 miles over 23 years equates to approximately 4,510 annual miles, a low figure for its age. This suggests periods of inactivity, which can accelerate component degradation through corrosion or fluid stagnation. Notably, the 2022-06-21 test to 2023-06-07 gap saw only 189 miles added, while the 2023-06-16 test to 2024-06-20 added 258 miles. Such sparse usage patterns may indicate the car was stored for extended periods, potentially affecting seals, batteries, and suspension components. A buyer should prioritise inspecting the underbody for corrosion, particularly around the chassis and exhaust system, given the vehicle’s age. Suspension bushes, coil springs, and brake calipers may exhibit wear from infrequent use, even if not flagged in MOT records. The absence of structural defects in recent tests is reassuring, but the 2023 failure entry warrants verification with the DVSA to confirm no unresolved issues. Low mileage does not inherently guarantee mechanical soundness, and a pre-purchase inspection should focus on hidden wear in static components.