2008 Jaguar XJ 2.7L Diesel · X66 XJS

The most recent MOT test on 2026-04-14 resulted in a passing grade, with only a minor defect related to the near-side registration plate lamp being inoperative—a straightforward lighting issue that does not impact road safety or structural integrity. However, the broader MOT history reveals a pattern of recurring advisories and past failures that suggest a vehicle that has experienced wear-related issues across multiple systems, particularly in the suspension, tyres, and braking components. While the latest test did not flag any major defects, the presence of persistent advisories from previous years—such as worn suspension bushes, damaged tyre sidewalls, and a history of inoperative parking brakes—indicates that the vehicle has not been fully maintained to address cumulative wear. This trend points to either a lack of proactive servicing or a vehicle that has accumulated significant mileage without adequate upkeep, which could lead to escalating mechanical problems if not addressed promptly. The vehicle’s recorded mileage of 115,514 miles at the age of approximately 18 years represents a moderate annual usage rate of around 6,417 miles per year, which is typical for a Jaguar XJ of this era. However, the mileage data alone does not fully explain the maintenance history, as the gaps between MOT tests vary and some tests occurred after periods of low or no recorded mileage. For example, the failure in 2023-04-18 coincided with advisories on tyre perishing and worn suspension components, suggesting that the vehicle may have been stationary for extended periods, allowing consumables like tyres to degrade or corrosion to set in. Conversely, the absence of major failures in more recent tests could imply that the vehicle has been driven more actively in the last two years, but the wear history still indicates that certain systems have reached or neared their operational limits. The combination of moderate mileage and recurring advisories suggests that the vehicle has been subjected to both high and low usage cycles, which accelerates wear in critical areas like suspension components and tyres. For a prospective buyer, the most critical areas to inspect are the suspension system, tyres, and braking components, as these have been flagged repeatedly in the MOT history. On a test drive, listen for unusual noises such as clunks or rattles from the front or rear suspension, which could indicate worn bushes or broken suspension arms. Check for uneven tyre wear patterns, particularly on the edges of the tyres, which may suggest misalignment or suspension issues. Inspect the front and rear tyres closely for signs of cracking or perishing, especially on the sidewall, as this can compromise tyre integrity and safety. The presence of a worn or damaged fuel cap could also indicate a history of leaks or poor maintenance, so verify that the fuel system is sealed and free from corrosion. Additionally, examine the parking brake mechanism for binding or excessive wear, as the 2023 failure highlights a potential long-term issue. Beyond the MOT history, conduct a thorough visual inspection for signs of standing corrosion, particularly around the wheel arches, exhaust system, and undercarriage, as prolonged idling can accelerate rust formation. Test the brake pedal for firmness and listen for grinding or squeaking noises when applying the brakes, which could signal worn brake pads or corroded discs. Finally, check the 12V battery and alternator for signs of failure, as an ageing vehicle of this age may struggle with electrical systems due to internal degradation or prolonged disuse. Prioritise servicing the suspension components, particularly the front and rear bushes, and consider replacing the tyres to ensure they are well below the legal limits before any further driving.