2015 Audi Q5 S Line Plus TDI Quattro A 2.0L Heavy oil · ST09 UAT

With a 164,404-mile tally spread across eleven years of recorded testing, this 2015 Audi Q5 S Line Plus TDI quattro carries an accumulated workload that places it firmly in the high-mileage category for its age group, yet the official DVSA record shows no advisory notes or advisories flagged at any of the six tests captured. The 2026-05-10 pass at the latest inspection, alongside a clean 2025-05-31 pass and an unblemished 2023-11-13 outcome, gives the recent file an outwardly stable appearance. It should be noted, however, that one test on 2023-10-21 was recorded as a failure, with no defect categories or reasons listed on the file, meaning a specific issue was identified by the examiner but is not documented within the provided dataset. That the vehicle returned to the station just over three weeks later on 2023-11-13 and passed without a single advisory could indicate that the failure was procedural or a minor item that was remedied prior to retest, but the absence of detail prevents any firm conclusion about its mechanical nature. The usage profile is the more pressing factor for any prospective buyer. Averaging around 14,946 miles per year against an 11-year-old vehicle, this Q5 has covered considerably more ground than the typical 8,000 to 10,000 miles per annum that defines average UK private ownership. There is also a substantial gap in testing coverage between the 2022-07-22 pass and the 2023-10-21 failure, with no recorded tests during that 15-month interval, which combined with the heavy annual accumulation suggests the vehicle has been in regular commercial or long-distance service rather than the lighter use more typical of a private owner. Higher mileages of this magnitude accelerate wear on diesel-specific components such as the dual-mass flywheel, turbocharger actuator, EGR valve and DPF, as well as on consumables like clutch assemblies, suspension bushes and anti-roll bar links, all of which should be regarded as candidates for closer inspection rather than assumed serviceable purely on the basis of a clean MOT sheet. Because the DVSA file contains no advisory notes, there are no specific components called out by examiners, and the inspection focus must therefore shift to those areas where high-mileage TDI quattro vehicles most commonly present issues during a physical appraisal. On a test drive, listen for clonking or knocking from the front suspension over speed humps and uneven surfaces, which on this platform commonly points to worn upper and lower wishbone bushes, anti-roll bar drop links, or fractured coil springs. Pay particular attention to steering response; any vagueness on turn-in, knocking when turning at low speed, or vibration through the wheel under braking could indicate tired front or rear subframe mounting bushes. Check the diesel particulate filter by performing a sustained motorway run and confirming that the exhaust remains free of excessive smoke on overrun, and verify that no management warning lights are present, particularly for the EGR, turbo boost or DPF, as these systems attract significant cost if intervention has been delayed. Brake-related components also merit direct attention. With this level of mileage, the discs are likely to have been replaced at least once, but binding calipers and uneven pad wear remain common on Q5s that have seen heavy use, so feel for a pulsing pedal under firm braking and listen for any dragging or uneven pull to one side during light application. Inspect the underside of the vehicle for any oil misting around the cam chain cover, turbo oil feed lines, and the rear main seal area, as TDI engines of this generation are prone to seeps that can develop into leaks at high mileage. Finally, the timing chain on the 2.0 or 3.0-litre TDI should be confirmed as having been addressed, as stretched chains are a well-documented failure mode on this engine family and would not necessarily be flagged at an MOT. A pre-purchase inspection by a specialist familiar with Audi quattro drivelines is strongly advisable given the mileage, even though the recorded MOT history itself is unblemished.