2006 Audi RS4 4.2L Petrol · SK06 ESF

The vehicle presents a concerning roadworthiness profile showing a worsening trend in mechanical degradation and deferred maintenance. While it passed its most recent test in July 2025 at 92,065 miles, this followed a failure just two days prior due to a serious fluid leak in the offside rear shock absorber. The presence of corroded hydraulic pipes and a corroded rear sub-frame indicates that the vehicle is suffering from environmental damage that has not been proactively addressed despite the low mileage. At 92,065 miles, this twenty-year-old RS4 has covered a low average of approximately 4,600 miles per year. However, the data reveals a significant gap in usage between June 2023 and August 2024, where the car covered only 209 miles in fourteen months. This pattern of intermittent use often correlates with the deterioration seen in rubber components, such as the perished boot seal and deteriorated ball joint dust covers noted in 2023, as well as the persistent brake binding and pitting caused by the vehicle sitting stationary for long periods. A buyer must prioritise a thorough inspection of the suspension and braking systems. The record consistently flags worn upper suspension arm bushes since 2022, and the 2025 report highlights a binding offside rear caliper and poor parking brake performance that suggests the mechanism requires immediate attention. Furthermore, the corrosion on the rear sub-frame and the active suspension hydraulic pipes represents a long-term structural risk; although the sub-frame was not yet seriously weakened, the recurring mention of rust across multiple tests suggests the chassis is vulnerable to ongoing moisture and salt-induced decay.