2004 Audi A4 2.5L Diesel · OO54 MSO

The most recent MOT inspection on 14 May 2026 resulted in a pass with no defects recorded, following a significant failure just one day prior. The maintenance trend for this Audi A4 is highly inconsistent and suggests a reactive rather than proactive approach to vehicle upkeep. The vehicle has experienced repeated failures involving critical safety systems, including the engine malfunction indicator lamp, anti-lock braking system faults, and dangerous tyre conditions. While the most recent pass indicates that the immediate failures from May 2026 have been rectified, the history shows a pattern of neglecting essential repairs and safety-critical items until they reach a point of failure or a dangerous classification. With a recorded mileage of 130,832 over approximately 22 years, this vehicle has covered an average of just under 6,000 miles per year. This is significantly lower than the UK national average, suggesting the car has been used for light commuting or has spent extended periods stationary. While low mileage can imply less mechanical wear on the engine and drivetrain, it often presents specific risks associated with age-related degradation. Long periods of inactivity can lead to the perishing of rubber components, such as suspension bushes and drive shaft boots, as well as the degradation of fluids and the potential for brake calipers to seize due to corrosion. Prospective buyers must pay close attention to the suspension and drivetrain components, as the MOT history shows a persistent and recurring issue with play in both the nearside and offside front lower suspension arm ball joints dating back to at least 2023. This issue was left unaddressed through multiple tests and should be thoroughly inspected. During a test drive, listen for knocking, clunking, or creaking sounds when navigating uneven surfaces or turning the steering wheel, as worn ball joints can negatively impact steering precision and tyre wear. Furthermore, the previous failure of the nearside front constant velocity boot suggests that rubber components in the drivetrain are prone to deterioration; check for grease spray around the wheel arches or any rhythmic clicking sounds when turning under load, which would indicate a failing drive shaft joint. The repeated failures regarding the engine malfunction indicator lamp (MIL) and the ABS warning light are particularly concerning for an older vehicle. Even though these were passed recently, they indicate intermittent or recurring electronic or sensor-based faults that may resurface. It is essential to verify that no warning lights remain illuminated on the dashboard during operation. Additionally, given the low annual mileage and the history of tyre failures due to damage and perishing, inspect the sidewalls of all tyres for fine cracking or bulging, which indicates age-related rubber degradation regardless of tread depth. Finally, ensure the service history is robust, as a vehicle with this usage profile requires strict adherence to calendar-based fluid changes for brake fluid, coolant, and oil to prevent internal corrosion and sludge buildup.