Used Audi A4 S Line prices

There are 525 used Audi A4 S Line cars for sale from UK dealers on AskCar, as of 1 November 2026. Typical asking price £16,000 (the median: half cost less, half cost more). The cheapest is £1,779. The middle half are priced between £11,500 and £21,000.

Dealers lowered the asking price on more than a quarter of Audi A4 S Line cars: 173 of the 525 in the 14 days to 1 November 2026.

Audi A4 S Line prices by year

A 2023 Audi A4 S Line typically costs £21,000, against £21,000 for all 2023 Audi A4 cars, as of 1 November 2026.

YearTypical asking priceTypical mileage
2024 Audi A4 S Line£22,50017,000 miles
2023 Audi A4 S Line£21,00030,000 miles
2022 Audi A4 S Line£19,50040,000 miles
2021 Audi A4 S Line£17,00048,000 miles
2019 Audi A4 S Line£14,60059,000 miles
2018 Audi A4 S Line£12,00064,000 miles
2017 Audi A4 S Line£11,50074,000 miles
2016 Audi A4 S Line£11,50073,000 miles

Only 14 of the Audi A4 S Line cars for sale are 2020 models, too few to give a typical asking price.

Typical asking prices are of Audi A4 S Line cars for sale on 1 November 2026, and are given only where at least 20 cars with a price are for sale.

AskCar lists 1,461 used Audi A4 across the UK, from 957 dealerships.

As of 1 November 2026, AskCar lists 578,994 cars and vans from 12,654 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

Audi A4 S Line cars for sale now, page 1 of 11

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. 482 of the 500 cars listed here meet these rules. Pages 2 to 11 list every other Audi A4 S Line car, cheapest first, including the 18 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 1,403 priced Audi A4 adverts on AskCar as of 1 November 2026. The figures on this page describe the cars advertised, not a valuation of every Audi A4 S Line.

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.

This list leaves out 25 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value Audi A4 S Line: priced furthest below the AskCar estimate

These 10 are priced 12% to 19% under their AskCar estimate. Their asking prices run from £1,779 to £21,995.

Cheapest Audi A4 S Line: the lowest asking prices

These 10 are priced £1,779 to £4,995. They have covered 81,000 to 166,200 miles.

Lowest-mileage Audi A4 S Line

These 10 have covered 1,682 to 8,019 miles. Their asking prices run from £16,990 to £30,933.

Recently reduced Audi A4 S Line: the biggest price reductions in the 14 days to 1 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 1 November 2026. Their reductions since AskCar first saw them run from £2,555 to £3,680.

Newly advertised Audi A4 S Line: first seen by AskCar in the 7 days to 1 November 2026

These 10 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

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