2004 Volvo XC90 2.4L Diesel · W9 COO

The most recent MOT test on 26 June 2026 resulted in a pass, although it was accompanied by a notable collection of advisories and a minor defect that warrant careful attention from any prospective buyer. The advisories note rear sub-frame corrosion, rear upper suspension arm corrosion, and rear chassis corrosion, all classified as not seriously weakened at this stage but clearly indicative of progressive structural deterioration consistent with a 22-year-old vehicle. A minor defect was also recorded for severe deterioration of the offside front outer constant velocity joint boot, which if left unattended will allow grease to escape and moisture to ingress, leading to premature joint failure and potential drive shaft replacement. The earlier failure on 19 June 2026 under the same advisory profile, combined with the failure of the central rear passenger seat backrest to secure in the upright position, suggests the vehicle was returned to address an obvious safety issue before re-presenting successfully. Overall, the maintenance trend appears stable in terms of achieving pass certificates but is clearly worsening in terms of underlying corrosion and wear items, with an accumulation of advisories across recent tests pointing to a vehicle approaching a threshold where structural and suspension components may soon require substantive intervention. The recorded mileage of 143,698 miles over approximately 22 years equates to an annual average of around 6,532 miles, which is broadly typical for a vehicle of this age but sits at the lower end of average usage, suggesting periods of standing or limited use may have occurred. This mileage profile carries specific mechanical implications: prolonged standing periods promote brake disc corrosion and caliper seizure, age-related degradation of flexible brake hoses, perishing of tyre sidewalls even with adequate tread, and deterioration of coolant, brake fluid, and power steering fluid due to calendar ageing rather than mileage accumulation. The consistent year-on-year MOT testing without exceptionally long gaps indicates the vehicle has been kept in active use and regularly presented for inspection, which is reassuring, but the age of the vehicle means that consumable rubber components, electrical items, and structural elements must be assessed on their calendar age as much as their wear condition. For a prospective buyer, the recurring advisories relating to rear sub-frame, rear chassis, and rear upper suspension arm corrosion should prompt a thorough physical inspection of the underbody on a ramp, as these advisories are progressive in nature and will eventually cross the threshold into serious weakening categories. Listen for clonking or knocking noises from the rear suspension over speed humps and uneven road surfaces, and check for uneven rear tyre wear which would indicate compromised arm bushes or geometry issues. The steering rack inner joint play advisories from 2023 and 2024 indicate a developing wear pattern in the steering system; on a test drive, monitor for vagueness in the steering response, clunks when turning at low speed, or any inconsistency in self-centring. The 2025 failure relating to headlamp lens defects and instrument cluster illumination issues suggests electrical gremlins which should be checked thoroughly, and the 2023 failure for imbalanced front braking points to possible caliper, disc, or pad issues that warrant a physical brake inspection including disc measurement and pad wear assessment. The near rear wheel bearing play advisory from 2025 should be re-evaluated, as worsening bearings typically produce a humming or droning noise that increases with road speed and may change when cornering. Given the vehicle's age, additional inspection items beyond the MOT record should include a careful examination of all tyre sidewalls for cracking or perishing from age, even if tread depth remains adequate, and verification of the manufacturing date code on each tyre. The 12V battery should be load tested, as batteries in low-mileage or intermittently used vehicles frequently fail prematurely due to sulphation from partial state of charge operation. All fluid conditions and service histories should be verified, particularly engine coolant, brake fluid, and automatic transmission fluid if fitted, as age-related degradation of these fluids can lead to internal corrosion of the cooling system, brake system component failure, or transmission wear. The timing belt replacement interval should be confirmed if this XC90 is fitted with the 2.4 or 2.9 litre diesel or the 2.5 litre petrol engine, as these units have critical timing belt schedules that, if overlooked, can result in catastrophic engine damage. Finally, given the structural corrosion advisories, a comprehensive inspection of the rear chassis legs, mounting points, and any repair history should be undertaken, as Volvo XC90s of this generation are known to suffer from rear chassis corrosion which can ultimately render the vehicle beyond economic repair.