2004 Audi A4 1.9L Diesel · ST04 GXR

The vehicle remains roadworthy, though the maintenance trend shows signs of age-related degradation despite consistent passes. The most recent test in September 2025 at 174,273 miles passed, but introduced new advisories regarding an oil leak and a deteriorated front registration plate. While the car maintained a clean record in 2024, the reappearance of structural corrosion issues suggests that the vehicle is entering a phase where preventative maintenance of structural integrity components will require more proactive attention. The mileage pattern is consistent with a 22-year-old vehicle, averaging approximately 8,000 miles per year. Between October 2022 and September 2025, the car covered 19,897 miles, representing a steady usage rate of roughly 6,600 miles annually. This consistent mileage suggests the vehicle has not suffered from long periods of standing which degrades seals, though the high cumulative mileage places significant stress on aging rubber components and suspension bushings typical of this generation of Audi A4 chassis. A buyer must prioritize a thorough physical inspection of the rear sub-frame, as corrosion was noted in both October 2022 and September 2025. Although the tester described the corrosion as not seriously weakened, rust on these structural members often accelerates and can lead to failure if not monitored. The oil leak flagged in the 2025 test also requires close investigation to determine if it is a minor valve cover seep or a more significant engine seal failure. Additionally, the exhaust system should be checked for security since a defective mounting was recorded in 2022, indicating the hardware is reaching the end of its functional life.