2004 Volvo XC90 2.4L Diesel · RF04 YPM

The 2004 Volvo XC90 presents a mixed roadworthiness profile characterised by recurring technical advisories and occasional outright failures rather than sustained reliability. The most recent MOT conducted on 2023-06-23 resulted in a pass, though this follows three prior failed assessments spanning 2020 to 2022, each highlighting different subsystems. Repeated near-side rear tyres being worn close to legal limits appears consistently across multiple years, while anti-roll bar linkage ball joints deteriorate progressively, indicating gradual suspension bush degradation. The overall trajectory is best described as unstable rather than improving, with the vehicle experiencing distinct problem clusters rather than steady decline. At 144,112 miles on its 19-year life, the vehicle accumulates approximately 6,550 miles annually, which falls within the expected range for its age and usage pattern. The timing of the failed tests—particularly the cluster between mid-2020 and late 2023—suggests the car encountered elevated operational stress during those years, possibly through higher mileage runs or demanding driving conditions. Notably, the interval between the 2022-05-17 pass and the 2023-06-23 pass spans just over eleven months, which is within standard MOT recurrence windows, yet the intervening period contained two consecutive failures that would typically prompt a longer gap. The lower end of the mileage bracket combined with these quality control lapses implies the suspension and braking systems have endured measurable wear despite the modest annual totals. The anti-roll bar linkage deterioration manifests as ball joint dust covers becoming severely deteriorated, which on a test drive should be accompanied by increased steering play during sharp turns and possible knocks over potholes or uneven surfaces. The recurrent rear tyres approaching legal wear limits suggest either inconsistent inflation monitoring or prolonged hard-use cycles where the front tyres remain adequately inflated while the rears degrade faster. Subframe corrosion noted in August 2020 indicates rust penetration that could compromise structural integrity if left unchecked, particularly where wheel arches meet the main frame. Additionally, the "brake performance not tested" finding from July 2020 calls for immediate attention as the lack of functional brake testing leaves undetected potential issues such as worn pads, glazed discs, or air in the hydraulic system. Buyers should conduct a thorough physical inspection of all anti-roll bar linkages, paying particular attention to ball joint seals for signs of leakage or excessive play that might produce audible clicking or vibration at speed. A visual examination of the subframe, especially around the wheel mounts and crossmembers, is essential to assess the depth of rust and determine whether penetrating treatment or replacement is required. During the test drive, listen for any clunking or knocking over bumps that could indicate worn suspension bushings or anti-roll bar instability, and monitor the handling for any pulling to the inside or outside of corners that might signal tyre wear imbalance or differential issues. Finally, verify that both front and rear tyres are properly inflated according to the manufacturer's specification and that the tread remains even across the entire contact patch, as the repeated near-limit readings on the rear tyres suggest they may require rotation or replacement soon.