2020 Audi A4 2.0L Diesel · WN20 OFD

Annual accumulation of roughly 13,676 miles against a six year age places this A4 firmly in the higher than average usage bracket, and that wear profile sits at the centre of its roadworthiness story. The 2026-05-02 test produced a pass alongside a single advisory for rear brake pad wear, but the same date also generated a failure for a nearside rear road wheel fixing missing, which is a serious finding because it directly compromises wheel security at speed. Prior tests in 2025, 2024 and 2023 all passed with no advisories recorded, so the bulk of the history is clean, yet the sudden appearance of a wheel fixing defect and brake wear advisory at the most recent test suggests that the higher annual mileage is beginning to translate into consumable and fastening attention items. The mileage progression across the four recorded tests is consistent with steady accumulation rather than long lay ups or sudden jumps. From a typical 2020 launch point through to the 2026 reading of 82,055 miles, there are no multi year gaps where the vehicle would have been off the road, and no obvious odometer inconsistencies that would raise concern about clocking. What this sustained use means, however, is that components subject to friction and per wheel torque checks become more likely to surface as advisories or failures. A missing wheel bolt can arise from an incomplete wheel refit after a tyre change or brake job, but on a higher mileage car that has seen repeated workshop attention it is a reminder that the fastenings themselves should be confirmed before purchase. For a prospective buyer, the rear brake pad advisory means the pads should be measured directly and the condition of the rear discs inspected for lipping, scoring or hot spots, as thin pads on a high mileage A4 frequently coincide with discs nearing their wear limit. A test drive should include firm pedal applications from moderate speed to check for rear brake judder or pulling, and a low speed reverse stop to detect binding calipers which are common on the rear axle of this generation. The wheel fixing failure warrants a close visual check of all four wheels for any sign of damaged or replaced studs, and a torque check of each wheel bolt to the manufacturer specification, as the remaining studs can be weakened if one was stripped or sheared rather than simply omitted at refit. Beyond the flagged items, the higher than average annual mileage argues for a proactive check of the suspension and drivetrain components that the MOT inspection does not fully cover. On the test drive, listen for clonks or thuds from the front suspension over speed humps and uneven surfaces, which can indicate worn control arm bushes or anti roll bar links that are common at this mileage. Steering should return cleanly to centre without vibration through the rim, and any knocking from the drivetrain on take off or during direction changes would warrant investigation of the driveline flex discs and engine supporting components. A compression or leak down check, along with an under bonnet inspection for oil residue around the cam chain cover and turbo oil feed lines, would also be prudent given the sustained motorway level mileage that this usage pattern implies.