2012 Audi A6 3.0L Diesel · ST12 WNH

A consistent pattern of suspension and front brake component wear is the defining mechanical story of this 2012 Audi A6, with the front axle repeatedly flagged across multiple tests even though the vehicle has passed every inspection since a single component failure in 2021. The earliest recorded advisory in the 2020 test noted nearside rear tyre wear, but the more telling cluster appeared in the 2023 examination, where both front suspension arm pins or bushes, the offside front anti-roll bar ball joint, and the front brake discs were all flagged with advisories. The two subsequent passes in 2024 and 2025 recorded no defects, suggesting the advisories either self-resolved or were addressed privately between tests. The most recent test on 3 August 2026 returned a pass with advisories again centred on the front axle: both front tyres worn close to the legal limit and on edge, alongside front brake disc wear with pitting and scoring, indicating that the underlying issue with the front end has not been permanently resolved. The single failure in the recorded history, a fractured nearside rear coil spring recorded on 18 June 2021, was a serious structural suspension defect and was rectified before the car returned later the same day to pass, which is why two entries exist for that date. At 139,641 recorded miles over approximately fourteen years of life, this A6 has accumulated roughly 9,974 miles per year, a rate that is broadly typical for a vehicle of its age and consistent with regular but not excessively high use. Mileage progression across the six test entries appears reasonably continuous, with no extended gaps that would suggest a long period off the road or storage that might otherwise introduce issues such as seized components or brake corrosion from inactivity. For a vehicle of this mileage and age, the recorded wear pattern is largely expected, as consumable braking components, suspension bushes, and anti-roll bar joints all carry finite service lives and tend to require incremental attention once a car passes the 100,000 mile mark. The recurrence of advisories rather than escalating failures suggests that wear is being monitored rather than ignored, though the clustering around the front axle is worth taking seriously. For a prospective buyer, the priority areas for physical inspection and test drive evaluation should mirror the components that have been repeatedly flagged. On a road test, listen for clonking or knocking noises from the front suspension when traversing speed bumps or uneven tarmac, particularly over dips that load the suspension, as the recorded advisories on the front arm pins or bushes and the offside front anti-roll bar ball joint suggest potential play that could worsen with further wear. Pay close attention to steering precision; any vagueness through the wheel centre position, knocking under braking, or uneven tyre wear patterns visible on the inner or outer edges of the front tyres would reinforce the advisories already recorded. The 2026 advisories on both front tyres being worn close to the legal limit and on the edge indicate that an immediate replacement budget should be anticipated regardless of tread depth visible on the day of viewing. The braking system warrants direct scrutiny given the recurring front disc advisories in 2023 and again in 2026, where the discs were noted as pitted or scored. During a test drive, evaluate pedal feel for any judder or vibration under firm braking, which would suggest the disc wear has progressed beyond what the advisory description captured, and listen for any scraping or grinding that could indicate pad material depletion. Inspect the discs visually for a stepped lip at the outer edge and check for uneven disc surface finish, as pitted and scored discs on a high-mileage Audi of this generation are a known wear item and replacement, paired with new pads, is a realistic upcoming cost. Finally, given the recorded failure of the nearside rear coil spring, a thorough check of all four springs is advisable, including looking for any vehicle sag at the rear when unladen and listening for metallic rattles over undulating surfaces, as a fractured coil spring on an Audi of this age can sometimes precede further spring failures on the remaining corners.