2009 Audi Q7 3.0L Diesel · SW09 CKO

The vehicle is currently roadworthy, but the maintenance trend is showing signs of worsening regarding structural integrity. While it passed its most recent test in September 2025, the two previous years showed advisories for corrosion on the rear sub-frame and suspension components. Although the sub-frame was not yet deemed seriously weakened, the recurrence of this issue indicates that rust is active and requires monitoring to prevent future failure. The mileage pattern is remarkably consistent for a vehicle of this age, averaging roughly 7,400 miles per year. There is a steady accumulation of distance between annual tests, with approximately 1,500 to 1,600 miles recorded in each interval since 2021. This low-frequency annual usage suggests the car is not used for heavy commuting, which can sometimes lead to accelerated aging of rubber components and seals despite the low mileage-related wear. A prospective buyer should prioritize a thorough physical inspection of the rear sub-frame and suspension assembly to assess the depth of the corrosion. Since rust has been noted in multiple consecutive years, it is vital to determine if the metal is thinning to a point that will soon require structural repairs. Additionally, the condition of the suspension bushes and arms should be checked, as the previous advisories suggest these areas are beginning to deteriorate due to environmental factors.