2020 Audi S4 prices

There are 13 used 2020 Audi S4 cars for sale from UK dealers on AskCar, as of 7 November 2026. Typical asking price £24,500 (the median: half cost less, half cost more). The cheapest is £22,444. The middle half are priced between £23,500 and £25,500. Median mileage: about 61,000 miles.

Dealers lowered the asking price on more than one in ten of 2020 Audi S4 cars: 2 of the 13 in the 14 days to 7 November 2026.

AskCar lists 93 used Audi S4 across the UK, from 82 dealerships.

As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2020 Audi S4 cars for sale now, page 1 of 2

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. 12 of the 13 cars listed here meet these rules. Page 2 lists every other 2020 Audi S4 car, cheapest first, including the one the groups do not pick from.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 90 priced Audi S4 adverts on AskCar as of 7 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2020 Audi S4.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.

Best value 2020 Audi S4: priced furthest below the AskCar estimate

Their asking prices run from £23,490 to £26,995.

Cheapest 2020 Audi S4: the lowest asking prices

These 10 are priced £23,490 to £25,995. They have covered 47,000 to 74,640 miles.

Lowest-mileage 2020 Audi S4

These 10 have covered 47,000 to 71,000 miles. Their asking prices run from £23,500 to £26,995.

Recently reduced 2020 Audi S4: the biggest price reductions in the 14 days to 7 November 2026

The dealer lowered the asking price on each of these 2 in the 14 days to 7 November 2026. Their reductions since AskCar first saw them run from £249 to £1,451.

Newly advertised 2020 Audi S4: first seen by AskCar in the 7 days to 7 November 2026

This car is the most recently advertised.

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