2015 Audi Q3 2.0L Diesel · GD64 HSX

The most recent DVSA examination on 10 January 2026 returned a PASS, although a single advisory was issued for the rear brake discs, noting that they are worn, pitted or scored though not considered seriously weakened at the time of test. Looking at the broader pattern, this vehicle has now accumulated three advisories and two failures over its recorded MOT history, all concentrated within the last two years after several consecutive clean passes between 2020 and early 2024. The trend is therefore one of mild deterioration rather than outright decline, with the issues being tyre-related, corrosion-related, and brake-related. While none of these are presently classed as failures or dangerous defects, the clustering suggests that the car is beginning to demand more attentive maintenance as it passes the 100,000 mile mark and approaches twelve years of age. Against a calendar age of roughly eleven years and a recorded odometer reading of 104,394 miles, the annualised usage sits at approximately 9,490 miles per year, which is broadly in line with typical UK averages for a premium compact SUV. There are no glaringly large gaps in the MOT history to suggest extended periods of standing, nor are there any signs of rapid mileage accumulation that would point to high-mileage commercial or motorway use. This fairly steady usage profile is mechanically favourable, suggesting that the engine, drivetrain and major assemblies have seen regular working rather than the harsh cold-start cycles associated with very low mileage or the sustained high-rev running typical of fleet vehicles. The mileage is, however, now at a level where several major service items such as timing belt or chain inspection, transmission fluid and coolant renewal become critical considerations on a Q3 of this generation. Given the advisory on the rear brake discs from the 2026 test, a prospective buyer should arrange a close inspection of the braking system, ideally with the wheels removed. Surface pitting and scoring on the rear discs will progress to judder under braking, prolonged stopping distances and ultimately require disc and pad replacement together. It is also worth checking that the handbrake mechanism, which on the Q3 operates on the rear discs via an electric caliper, is releasing cleanly, as binding rear calipers are a known weakness on this platform and would manifest as dragging, uneven pad wear and a rear bias toward high operating temperatures. The 2025 advisory for a corroded rear anti-roll bar also warrants a physical check underneath, looking for advanced surface corrosion, cracked or perished droplink bushes, and any clonking noises from the rear suspension over speed humps or rough tarmac. The earlier dangerous failure for sub-1.6mm front tyres is a reminder that tyre condition should be verified by the buyer regardless of how new they appear, measuring tread depth across the full width and checking the sidewalls for perishing, bulges or age-related cracking, particularly given the vehicle is now over a decade old. Beyond the recorded defects, a vehicle of this age and mileage demands attention to several time-based rather than mileage-based items. The 12-volt battery in particular is very likely approaching the end of its service life and should be load tested, as a marginal battery will produce a cascade of seemingly unrelated electrical faults on this model. Brake fluid is hygroscopic and should have been renewed on a calendar basis, ideally every two years regardless of mileage, so verifying the date of the last fluid change is worthwhile. Coolant, automatic transmission fluid and the four-wheel-drive haldex coupling oil on the Quattro variants all degrade with time, and an inspection of service history stamps or invoices for these renewals is strongly advised. Finally, given the Q3's known susceptibility to oil consumption from its TFSI petrol engines or injector and DSG mechatronic issues on the diesels, an under-bonnet inspection for leaks, a check of the oil level and a scan for stored fault codes would form a sensible part of any pre-purchase evaluation.