2015 Audi A4 2.0L Diesel · BA03 RTY

The most recent MOT, carried out on 11 December 2025, resulted in a pass. The only recorded advisory was a light misting of oil from the nearside rear shock absorber and a note that a rear child seat prevented full inspection of the adult belts. Over the past six years the vehicle has consistently passed its MOT, with occasional advisories for brake‑pad wear, tyre tread, and the same belt‑access issue. The pattern suggests a generally stable maintenance regime; the appearance of a rear shock oil leak in the latest test is the first significant mechanical advisory in several years and warrants closer scrutiny, but there is no evidence of a deteriorating trend beyond normal wear items. At 64,128 mi the 2015 Audi A4 has averaged roughly 5,800 mi per annum, which is markedly below the typical UK usage of 10‑12 000 mi per year for a vehicle of this age. Such low utilisation often points to periods of limited use or extended storage. While reduced mileage lessens cumulative wear on engine and drivetrain components, it can accelerate age‑related degradation of rubber and metal parts, particularly if the car has spent long intervals stationary. The modest annual mileage also means that consumables such as tyres, brake pads and fluids may have been replaced less frequently than the mileage would dictate, potentially leaving them out of service life due to calendar ageing. Prospective buyers should give the rear shock absorber a thorough visual and functional inspection. Look for any oil residue around the shock body, leaking seals, or dampness on the surrounding suspension components. On a test drive, listen for clunking or excessive bounce when traversing bumps, and check that the rear ride height remains consistent. The previous advisory on thin front and rear brake pads in 2022 suggests that the brake system may have been serviced; however, verify the current pad thickness and disc condition by measuring the pad wear indicator and inspecting the discs for scoring, glazing or excessive rust. Any pulsation in the pedal, squealing, or a feeling of reduced braking efficiency would indicate that the pads or discs are approaching the end of their service life. Given the vehicle’s age and low mileage, also examine the tyres for sidewall cracking, dry rot and verify the DOT code to confirm they are not beyond six years, regardless of tread depth. Inspect the battery terminals for corrosion and have the charge held under load, as long periods of inactivity can lead to sulfation and reduced capacity. Check the under‑carriage and wheel arches for surface rust, especially in the wheel wells and suspension mounting points, and ensure that all exterior lighting, including the previously dimmed off‑side front indicator, operates correctly. Finally, confirm that the rear seat belts function freely now that the child seat is removed, and request a full service history to corroborate that time‑based fluid changes—engine oil, coolant, brake fluid and gearbox oil—have been performed in accordance with Audi’s service schedule.