2017 Audi A4 S Line TDI 2.0L Heavy oil · ST17 LSF

A clean and uninterrupted run of MOT passes since the start of 2026, with the most recent test on 3 February 2026 recording a straightforward pass and no advisories or defects, points to a vehicle that has maintained a solid level of roadworthiness through its MOT pathway. The single blemish in the five-test history is a failure on 4 February 2025 which, crucially, lists no defects against the test; this is characteristic of a presentation or retest situation rather than an unresolved mechanical concern, particularly as the immediately following test on 7 February 2025 returned a clean pass with no advisories. Older tests from late 2022 and late 2023 were similarly clean, so the overall trend is one of consistency rather than deterioration, suggesting the core safety-tested systems have not been drifting towards a failure boundary. Against an age of around nine years, the recorded 104,041 miles equates to roughly 11,560 miles per annum, which sits comfortably within the expected bracket for a privately used executive saloon of this vintage and does not raise any immediate red flags regarding long-term underuse or excessive motorway accumulation. A small gap is visible between the 31 October 2022 test and the 26 October 2023 test, and another between October 2023 and February 2025, but these are consistent with normal biennial testing intervals and there is no multi-year lay-up that would typically invite concerns around seized brakes, perished cooling system hoses or a discharged battery. The mileage profile therefore reflects steady, regular use, which is generally beneficial for keeping lubricants circulated, exhaust moisture expelled and brake discs freed from surface corrosion. For a prospective buyer, the absence of recorded advisories across five consecutive tests is genuinely informative because it removes the obvious pointers that would otherwise focus an inspection, meaning the physical check should instead concentrate on the wear items most likely to be approaching service intervals at this mileage. Particular attention should be paid to the front and rear suspension, specifically the lower wishbone bushes, anti-roll bar links and the rear trailing arm bearings, which are known wear points on B9 platform Audi A4s and which would be felt on a test drive as a knock or clunk over speed humps, cats-eyes or when pulling away from rest. Likewise, the brake discs and pads should be inspected for lipping, surface corrosion and pad material depth, and a firm pedal with no sponginess or judder under braking should be confirmed. It is also worth scrutinising the engine bay and undertrays for any signs of oil seepage from the camshaft chain cover or turbo oil feed pipes, both of which are characteristic areas on higher-mileage 2.0 TFSI units, and listening on the test drive for any rattle from the timing chain on cold start. The steering should feel precise with no vibration through the wheel at speed, and the dual-clutch or manual gearbox, depending on the derivative, should select cleanly without any hesitation or whine from the mechatronics unit. Finally, a thorough visual check of the wheel arches, sills and subframe mounting points for any bubbling or surface corrosion is advisable given the vehicle's age and exposure to winter road salts, even though no such issues have been flagged by the MOT history to date.