Used Audi A6 Avant S Line prices

There are 307 used Audi A6 Avant S Line cars for sale from UK dealers on AskCar, as of 2 November 2026. Typical asking price £17,900 (the median: half cost less, half cost more). The cheapest is £1,495. The middle half are priced between £12,900 and £23,000.

Dealers lowered the asking price on more than a third of Audi A6 Avant S Line cars: 110 of the 307 in the 14 days to 2 November 2026.

Audi A6 Avant S Line prices by year

A 2019 Audi A6 Avant S Line typically costs £18,000, against £17,500 for all 2019 Audi A6 Avant cars, as of 2 November 2026.

YearTypical asking priceTypical mileage
2023 Audi A6 Avant S Line£25,00033,000 miles
2019 Audi A6 Avant S Line£18,00076,000 miles
2018 Audi A6 Avant S Line£15,50070,000 miles
2016 Audi A6 Avant S Line£10,00098,000 miles
2015 Audi A6 Avant S Line£10,50092,000 miles

Only 15 of the Audi A6 Avant S Line cars for sale are 2022 models, too few to give a typical asking price.

Only 11 of the Audi A6 Avant S Line cars for sale are 2021 models, too few to give a typical asking price.

Only 17 of the Audi A6 Avant S Line cars for sale are 2020 models, too few to give a typical asking price.

Only 14 of the Audi A6 Avant S Line cars for sale are 2017 models, too few to give a typical asking price.

Typical asking prices are of Audi A6 Avant S Line cars for sale on 2 November 2026, and are given only where at least 20 cars with a price are for sale.

AskCar lists 793 used Audi A6 Avant across the UK, from 580 dealerships.

As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

Audi A6 Avant S Line cars for sale now, page 1 of 6

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. 278 of the 291 cars listed here meet these rules. Pages 2 to 6 list every other Audi A6 Avant S Line car, cheapest first, including the 13 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 778 priced Audi A6 Avant adverts on AskCar as of 2 November 2026. The figures on this page describe the cars advertised, not a valuation of every Audi A6 Avant 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 16 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value Audi A6 Avant S Line: priced furthest below the AskCar estimate

These 10 are priced 12% to 20% under their AskCar estimate. Their asking prices run from £4,995 to £42,000.

Cheapest Audi A6 Avant S Line: the lowest asking prices

These 10 are priced £3,495 to £6,500. They have covered 64,000 to 189,000 miles.

Lowest-mileage Audi A6 Avant S Line

These 10 have covered 10 to 4,747 miles. Their asking prices run from £37,590 to £62,813.

Recently reduced Audi A6 Avant S Line: the biggest price reductions in the 14 days to 2 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 2 November 2026. Their reductions since AskCar first saw them run from £2,204 to £5,000.

Newly advertised Audi A6 Avant S Line: first seen by AskCar in the 7 days to 2 November 2026

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

Audi A6 Avant by gearbox, fuel and body

Audi A6 Avant prices by year

Audi A6 Avant by trim

Audi A6 Avant by price

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