2011 Audi A4 3.0L Diesel · AF52 AGF

Rear‑subframe corrosion has been a recurring theme in this 2011 Audi A4, appearing as an advisory on three separate MOTs (2024, 2024 and 2026) and flagged as “not significantly reduced” each time, while a serious fluid leak from the nearside rear shock absorber caused a failure in late 2020. The most recent test on 31 January 2026 recorded a pass with the same sub‑frame advisory, indicating that the issue has persisted but has not progressed to a structural defect, and the vehicle has otherwise cleared its inspections. At 136 022 mi the mileage averages roughly 9 000 mi per year, which aligns with typical usage for a fifteen‑year‑old saloon. The MOT history shows no large gaps in testing, with annual or near‑annual checks since 2020, suggesting the recorded mileage reflects genuine road use rather than long periods of storage. This level of mileage places normal wear expectations on consumables such as brake pads, suspension bushings and shock absorbers, especially given the documented advisories. The repeated front upper suspension arm pin and bush wear advisories (both nearside and offside) from the 3 February 2024 test warrant close inspection. On a test drive, feel for any looseness or clunking when traversing bumps, and check for uneven tyre wear that could indicate excessive movement. Visual examination should confirm the condition of the bushings and look for any corrosion around the mounting points. Given the prior shock absorber fluid leak, inspect both rear shock absorbers for oil seepage, dampness on the shock bodies, or reduced damping feel when the car is driven over uneven surfaces. Rear brake pad wear was flagged as thin on the 15 October 2021 MOT. Although no failure was recorded, the pads may be approaching the minimum thickness and could require replacement soon. Listen for any squeal or grinding during braking, and feel for a soft or spongy pedal which may indicate further pad wear or disc condition. A thorough inspection of the rear sub‑frame for advancing rust, especially at welds and mounting brackets, is advisable; any sign of structural compromise would necessitate professional assessment before committing to purchase.