2010 Jaguar XK 5.0L Petrol · JB07 XKB

The defining mechanical thread running through this Jaguar XK's record is a slow but steady accumulation of chassis and underbody deterioration, culminating in the only outright failure of the documented history on 28 October 2025, when both rear outer suspension rod ball joint dust covers were classified as Major defects for failing to prevent the ingress of dirt. While the vehicle was issued a Pass on the same date following remedial work, this entry marks a clear shift in the wear profile of the car. Earlier tests in March and December 2024 returned clean passes with no advisories, and the May 2024 test noted only cosmetic and minor items, yet by late 2025 the rear suspension linkages had deteriorated to the point of failing the standard. Repeated advisories for front and rear brake pipe corrosion covered in grease, brake hose ferrule corrosion across all four corners, and persistent front tyre perishing and cracking across multiple tests suggest the underfloor environment is becoming increasingly hostile to ferrous components, a typical pattern for a car of this age regardless of mileage. Against a 16-year vehicle age, the recorded 39,862 miles equates to approximately 2,491 miles per year, which is exceptionally low and consistent with a car that has either been used only sparingly or spent significant periods laid up. The MOT timeline itself offers a useful indication of activity, with tests recorded in 2021, 2022, 2023, 2024 (twice), and 2025 (twice), suggesting the car has been presented for testing reasonably consistently rather than left dormant for years at a stretch. That said, very low annual mileage carries its own mechanical considerations: suspension bushes, ball joints, brake caliper slides, and flexible brake hoses can suffer from dry-out and surface oxidisation through underuse just as readily as they degrade through high-mileage wear, and the record bears this out, with the rear ball joint dust covers splitting in 2025 after years of light loading. Conversely, items that scale with mileage, including engine internals, clutch, and major drivetrain components, are unlikely to have accrued significant wear given the odometer reading. For a prospective buyer, the most pressing area for a physical inspection is the rear suspension. The failure items relate to the outer suspension rod ball joint dust covers, which on the XK are part of the multi-link rear geometry, and once the cover is compromised, grit ingress accelerates wear of the joint itself. On a test drive, listen for clonks or knocks from the rear over uneven surfaces, particularly on acceleration and over speed humps, and feel for any vagueness or shimmy through the steering. The car should also be raised on a ramp if possible to inspect the rear suspension arms for any play, perished boots elsewhere in the rear geometry, and the state of the rear subframe mounting points, as the surrounding components are likely to be at a similar stage of rubber and cover degradation. Given that advisories for brake pipe corrosion covered in grease have appeared on both rear pipes, it is worth confirming whether any remedial sealing or pipe replacement has been carried out and inspecting the pipes directly for live rust, pitting, or weeping brake fluid, as corroded ferrous brake lines are a safety-critical failure point. The brake hoses across all four corners were flagged for ferrule corrosion as recently as 2023, and while this was advisory rather than failure level, the front and rear tyres have repeatedly been noted for cracking and perishing over multiple tests. Tyres on a low-mileage car deteriorate primarily through age rather than tread wear, and any current set fitted is likely to be several years old; check the DOT date stamps on the sidewalls and inspect the sidewalls closely for shoulder cracking, even if the tread depth appears adequate. The persistent minor windscreen damage advisories since 2021 should also be examined directly to ensure no new impact point has occurred. Finally, given the standing-time usage pattern, items that suffer from infrequent use, including the 12V battery, air conditioning compressor, and any hydraulic or convertible roof mechanism if this is the XK Convertible, warrant specific functional checks before purchase.