2003 Jaguar XJ 3.0L Petrol · OV03 OSJ

The vehicle's roadworthiness shows a recent downward trend in mechanical condition. While the Jaguar passed its most recent MOT on 22 May 2026 at 177,690 miles, the test followed an immediate failure on the same day. The inspector flagged several issues regarding the suspension and washer system, specifically noting insecure dust covers on the nearside track rod end and both front upper suspension arm ball joints. The presence of corrosion on the rear sub-frame and brake pipes, despite being noted as not seriously weakened, indicates that the vehicle is entering a phase of age-related deterioration. The mileage accumulation appears consistent with a vehicle of this age. Between the January 2024 test at 164,004 miles and the May 2026 test at 177,690 miles, the car covered 13,686 miles over approximately 28 months. This averages to roughly 5,800 miles per year, which is slightly lower than the lifetime average of 7,726 miles per year. The data shows a significant jump in usage between January 2025 and May 2026, where the mileage increased by over 12,000 miles in just 16 months. A prospective buyer must prioritize a thorough inspection of the vehicle's structural integrity and underside. The May 2026 record highlights corrosion on the rear sub-frame and brake pipes, which, although currently acceptable, suggests that rust is progressing. The mention of grease and underseal covering the pipes may be an attempt to mask the extent of this corrosion. The January 2025 advisory regarding an oil leak, though not excessive at the time, warrants a close look at the engine and gearbox seals to ensure the leak has not worsened. The recurring issues with ball joint dust covers and the recent failure of the windscreen washer suggest that while the car is being driven, some preventative maintenance on smaller consumables is being neglected. Before purchase, I recommend a physical inspection of the suspension components to check for play in the joints and a detailed examination of the sub-frame to ensure the corrosion remains surface-level and has not compromised the mounting points.