2018 Audi S4 • Compare 10 used cars with valuation

Market overview: Price Analysis (August-2026): A used 2018 Audi S4 typically costs between £17,219 and £26,227 • On average, used 2018 Audi S4 cars have covered 71,967 miles – with a few high-mileage examples reaching up to 87,300 miles • Depreciation and price trends over the last 12 months for the 2018 Audi S4 stand at -£2,880.