2003 Audi A4 1.9L Diesel · VA03 ABU

Chronic underbody corrosion, persistent oil seepage, and a history of worn suspension joints define the mechanical profile of this 2003 Audi A4. The most recent test on 8 July 2026 was a pass, yet it carried forward a familiar set of advisories: a non-excessive oil leak from the engine, pitted rear brake discs on both sides, corroded rear coil springs, slight play in the nearside front upper suspension arm ball joint, and corroded front wheel arches. Tracking the record chronologically, the trend is one of gradual deterioration rather than improvement. The 2020 test was entirely clean with no advisories recorded, but from 2021 onwards a recurring cluster of issues emerged: oil leakage (flagged every year since 2021), pitted rear brake discs (2021, 2022, 2024, 2026), rear coil spring corrosion (2023, 2026), and progressive wheel arch corrosion that has escalated from "starting to corrode" in 2021 to simply "corroded" by 2026. The July 2021 test was the only outright failure, driven by excessively worn lower suspension arm pins or bushes on both front sides, a serious structural concern that was subsequently rectified, though the upper arm ball joint play recorded in 2026 suggests the suspension components remain an area requiring ongoing attention. Additional cosmetic and minor advisories, such as perished tyres in 2025 and tape applied to both rear quarters in 2023, 2024, and 2025, point to bodywork deterioration consistent with a vehicle of this vintage exposed to British weather conditions. With 238,350 miles recorded across approximately 23 years of testing, this A4 has averaged around 10,363 miles per year, a rate that is broadly in line with typical usage for a car of its age. The mileage progression between tests is steady and consistent, with no dramatic gaps or implausible jumps that would suggest clocking anomalies or extended periods off the road. The tests have been conducted annually in July without interruption, confirming the vehicle has been in regular use throughout its recorded history. At this accumulated mileage, the mechanical demands on the engine, transmission, drivetrain mounts, and consumable components such as clutches, timing chains, and turbocharger elements (if fitted) are considerable. Combined with the 23-year service life, the cumulative wear on internal drivetrain components should be assumed to be substantial, and any prospective buyer should budget accordingly for items that fall outside the scope of MOT testing but are known wear items on high-mileage vehicles of this generation. For a pre-purchase evaluation, particular attention should be paid to the front suspension assembly, given the 2021 failure on lower arm pins and bushes and the 2026 advisory for upper arm ball joint play. On a test drive, listen for clonking or knocking noises from the front end when traversing speed bumps or potholes, and feel for vagueness or wandering in the steering, which could indicate worn tie rod ends, drop links, or anti-roll bar bushes. Visually inspect the lower control arms, subframe mounting points, and wishbone bushes for perishing, cracking, or heavy surface corrosion; on B6 and B7 platform Audi A4s of this era, the front subframe mounting areas are known to suffer corrosion that can compromise structural integrity. Jack the vehicle and rock each front wheel vertically and laterally to confirm there is no significant play beyond the slight movement already recorded. The rear coil spring corrosion flagged in 2023 and 2026 should prompt a thorough inspection of the rear spring seats and shock absorber top mounts, as corroded springs on this platform can eventually fracture, leading to sudden spring collapse. The recurring oil leak advisory, noted at every test since 2021, warrants identification of its source before purchase. Common leak points on the 1.8T and 2.0T engines fitted to this generation include the cam chain tensioner, valve cover gasket, sump gasket, and rear main seal. A simple check involves inspecting the underside of the engine for fresh oil accumulation and the condition of the oil level on the dipstick. With the rear brake discs flagged as pitted and scored across four separate tests, the discs are likely at or past their second or third set, and a physical inspection of disc thickness, lipping, and surface condition is essential, accompanied by an assessment of rear pad wear and caliper slide pin operation. The corroded front wheel arches should be examined by running a hand along the inner arch lip and checking for perforation, particularly around the headlight mounting areas and front panel seams. Finally, confirm that the tyres fitted are not perished or aged beyond their serviceable life, given the 2025 advisory noting perished rubber, and verify that the rear quarter bodywork damage noted in 2021 has been properly repaired rather than simply masked with tape.