2006 Jaguar XJ 2.7L Diesel · 500 BAB

The 2006 Jaguar XJ presents a stable mechanical trend, culminating in a clean pass at 121,098 miles on 5 August 2025. The maintenance pattern shows no recurring defects or advisories across the recorded history. However, the record reveals an unusual testing pattern. The vehicle failed its MOT on 4 August 2025 at the exact same mileage before passing the following day with zero defects logged. This exact scenario repeated in August 2024, where it failed at 118,145 miles and passed at 118,155 miles with no recorded faults. Failing a test without any documented defects typically indicates a minor compliance issue, such as a number plate discrepancy or a bulb failure, rectified immediately before the retest. Mileage accumulation has slowed considerably in recent years, contrasting with the vehicle's lifetime average of roughly 6,055 miles annually. Between the August 2023 test at 115,275 miles and the August 2024 test at 118,155 miles, the XJ covered just 2,880 miles. The subsequent year saw a similar trajectory, adding only 2,943 miles to reach the current 121,098 miles. This low recent utilization suggests the car has been covering short distances or spending extended periods stationary, a usage pattern that can cause its own specific wear issues despite the low mileage. Given the absence of flagged structural or mechanical defects in the official record, a buyer must look beyond the paperwork. Low-mileage, short-trip driving accelerates moisture buildup in the engine oil and exhaust system, so checking the oil for emulsification and the exhaust for internal corrosion remains prudent. Inspect the tyre sidewalls closely; the rubber may exhibit adequate tread depth but could be suffering from dry rot due to age and lack of use. Suspension bushes and perishable rubber components, such as the air suspension springs common on this generation XJ, often degrade from standing rather than rolling. A thorough inspection of the undercarriage for surface corrosion on brake lines and subframes is essential, as low usage does not exempt steel components from rust.