2019 Audi A6 2.0L Diesel · AP04 UXO

The mechanical narrative of this 2019 Audi A6 is dominated by a sudden cluster of brake and tyre wear advisories emerging in 2025, following several years of completely clean test results. Between 2022 and early 2024 the vehicle recorded three consecutive passes with no advisories whatsoever, suggesting the consumable components were holding up well. The picture changed sharply at the March 2025 test, where both front tyres were flagged as worn close to the legal limit or worn on edge, and then again in September 2025 when all four brake pads were noted as wearing thin alongside a further front tyre advisory, culminating in a failure on 4 September 2025. That same vehicle then passed just a week later on 11 September 2025 with no defects recorded, strongly implying that a targeted repair or replacement programme was carried out in that short window to address the flagged items. While the roadworthiness record ultimately resolves to a current pass, the late-life arrival of multiple wear-related advisories is a meaningful signal about the state of the consumables at this mileage. Annual mileage accumulation works out at approximately 8,900 miles per year, which sits broadly in line with typical usage for a seven-year-old executive saloon. There are no extended gaps in the testing history that would suggest the car was laid up for prolonged periods, and the roughly consistent annual progression of tests indicates fairly continuous use. At this kind of annual mileage, with the car now past six years of service, mid-life wear items such as brake discs, suspension bushes, anti-roll bar links, and the polybushes within the rear suspension are entering the phase where replacement is commonly required. The fact that all four brake pads were flagged simultaneously at the September 2025 test is a strong indicator that the discs were also approaching, or have now reached, the end of their service life and were likely renewed alongside the pads. A prospective buyer should pay particular attention to the braking system during a test drive, listening for any scoring noise or pulsation through the steering wheel under firm braking, which would suggest disc run-out or uneven pad transfer. The pedal itself should feel firm and progressive, with no excessive travel or sponginess that could indicate caliper slide pin seizure. Given the all-round brake pad advisories, it is worth inspecting each corner visually for evidence of recent pad and disc replacement, including any mismatch in disc surface finish between hubs, and confirming that the calipers are retracting cleanly rather than binding. If the work was carried out using budget-pattern components, this is worth discussing as a factor in any negotiation. The front tyre edge wear flagged in two consecutive 2025 tests is a separate concern that warrants direct investigation. Inner or outer edge wear on Audi A6 tyres of this generation frequently points to worn suspension geometry components rather than simple age-related wear, so the buyer should request a geometry report or have the wheel alignment checked independently. On the road, the car should be driven over broken surfaces and speed bumps to listen for clonks or knocks from the front end, which could indicate worn top mounts, control arm bushes, or anti-roll bar drop links. The steering should return to centre smoothly without delay and track straight on a level road with no consistent pull to either side. Any vagueness through the steering rack, tramlining over cat's eyes, or uneven rear tyre wear would warrant further inspection of the rear suspension bushes and subframe mounting points, as these are known wear items on this platform once mileage climbs past the 60,000-mile mark.