2003 Audi A4 2.5L Diesel · DC03 WBA

A persistent front oil leak and recurring braking system defects define the mechanical history of this vehicle. While it achieved a pass on 29 August 2023, this followed a failure for imbalanced rear brakes and was accompanied by advisories for pitted and scored rear brake discs. The oil leak has been a consistent point of concern, appearing on records as far back as March 2021, suggesting a long-term seepage issue that has remained present across multiple testing cycles. The recorded mileage of 123,669 miles is low for a vehicle of this age, averaging roughly 5,377 miles per year. However, there is a significant gap in the testing history from August 2023 to the present date in September 2026. Such a prolonged period without a recorded MOT test often correlates with the degradation of rubber components and the potential for braking systems to seize or corrode, particularly given the previously noted pitting on the rear discs. During a physical inspection, the engine bay should be checked for active oil misting or pooling, focusing on the areas flagged in the 2021 and 2023 tests. On a test drive, pay close attention to the braking performance; any pedal judder or an uneven pull during deceleration could indicate that the previously recorded rear brake imbalance or disc scoring persists. The history of worn brake pads and imbalanced axles suggests the braking system requires a thorough evaluation of the calipers and pads. The record also indicates historical play in the offside front lower suspension arm ball joint and the nearside front wheel bearing. Listen for rhythmic humming or droning noises that increase with speed, which would suggest the wheel bearing issue has progressed. Additionally, feel for any looseness or knocking sounds when traversing uneven surfaces, which may point to further wear in the suspension linkages. Finally, verify the current condition of the tyres, as outer edge wear and perishing were noted in multiple previous tests.