2012 Jaguar XF 3.0L Diesel · 33 RBF

Recent failures concerning exhaust emissions and rear suspension integrity mark a shift in this vehicle's roadworthiness trend, culminating in a pass on 2026-04-08 following a series of major defects in March. While the vehicle has a history of passing most tests, the recent failure highlighted a decline in the condition of critical chassis components and engine efficiency. This suggests that the vehicle is entering a phase where age-related degradation of rubber and seals is becoming more prevalent. The recorded 74,615 miles represents a low annual average of approximately 5,330 miles over 14 years. Such a usage profile often correlates with the degradation of perishable components due to inactivity or short-distance cycling. This is evidenced by the recent failure of multiple suspension ball joint dust covers and the exhaust emissions exceeding the default limit, both of which are common symptoms of a vehicle that has not been subjected to regular, long-distance motorway usage. Inspection should focus heavily on the rear suspension system, specifically the upper and lower suspension arm ball joints. During a test drive, listen for knocks or clunks from the rear of the chassis when driving over speed bumps or uneven road surfaces. The previous record of play in the offside rear upper ball joint suggests a need to verify that the replacements are secure and that there is no abnormal movement in the rear wheels. Attention must also be paid to the engine and braking system. Given the recent failure for exhaust emissions, check for erratic idling or excessive exhaust smoke during acceleration. Referencing the 2021 advisory for low power steering fluid, the steering should be checked for any heaviness or whining noises during low-speed manoeuvres. Finally, check for pedal judder during braking, which would indicate that the pitting and scoring of the front brake discs noted in 2023 has not been fully rectified.