2004 Audi A4 1.9L Diesel · AV54 HRP

The vehicle presents a worsening maintenance trend characterized by recurring mechanical failures and deteriorating structural components. While the most recent test on 6 November 2025 at 159,905 miles resulted in a pass, the inspector flagged corroded rear suspension components and a deteriorating centre exhaust box outer skin. These issues follow a failed test just six days prior on 30 October 2025, which identified an SRS warning lamp fault, excessively worn offside front suspension arm ball joints, and multiple tyres worn to the legal limit. The persistent nature of these defects suggests a reactive rather than proactive approach to maintenance. The mileage accumulation is consistent with a vehicle of this age, averaging approximately 7,268 miles per year. The records show steady usage, moving from 108,159 miles in November 2018 to 159,905 miles in November 2025. There are no significant gaps in the annual testing history, indicating the vehicle has remained in regular use. However, the frequency of failures during recent testing cycles, particularly the consecutive failures in October 2024 and October 2025, indicates that the mechanical condition is declining despite the consistent mileage. A prospective buyer must conduct a thorough physical inspection of the underside to assess the extent of the corrosion on the rear suspension and exhaust system. The history shows a long-standing pattern of suspension wear, with anti-roll bar bushes and ball joints appearing in multiple tests between 2020 and 2025. The braking system also requires close scrutiny; the tester noted fluctuating rear service brakes in 2025 and binding brakes in 2024, alongside pitted and scored front discs. These recurring issues suggest potential issues with brake calipers or hydraulic components. Electronic systems also warrant careful verification. The supplementary restraint system (SRS) and anti-lock braking system (ABS) warning lamps have appeared in several tests, including October 2025 and October 2023. Given the age of the vehicle and the history of emissions failures in 2018 and 2024, the engine management and exhaust integrity should be prioritised. Ensuring that the recent repairs for the suspension ball joints and tyres have been addressed to a high standard is essential before purchase.