2018 Audi A6 Avant prices

There are 70 used 2018 Audi A6 Avant cars for sale from UK dealers on AskCar, as of 7 November 2026. Typical asking price £14,600 (the median: half cost less, half cost more). The cheapest is £8,850. The middle half are priced between £13,000 and £16,900. Median mileage: about 84,000 miles.

Dealers lowered the asking price on more than a quarter of 2018 Audi A6 Avant cars: 22 of the 70 in the 14 days to 7 November 2026.

2018 Audi A6 Avant prices by engine and mileage

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
2.0 diesel£14,500Too few for saleToo few for saleToo few for sale£14,000

Only 10 of the 2018 Audi A6 Avant cars for sale have the 1.8 petrol engine, too few to give a typical asking price.

Only 10 of the 2018 Audi A6 Avant cars for sale have the 3.0 diesel engine, too few to give a typical asking price.

2018 Audi A6 Avant prices by trim

TrimTypical asking price, 2018 cars
S Line£15,000
Black Edition£15,500
SE ExecutiveToo few for sale
SportToo few for sale

Only 11 of the 2018 Audi A6 Avant cars for sale are SE Executive, too few to give a typical asking price.

Only 2 of the 2018 Audi A6 Avant cars for sale are Sport, too few to give a typical asking price.

Typical asking prices are of 2018 Audi A6 Avant cars for sale on 7 November 2026, and are given only where at least 20 cars with a price are for sale.

2018 Audi A6 Avant against other years

A 2017 Audi A6 Avant car has a typical asking price of £14,200 and a 2019 one £17,600, as of 7 November 2026.

AskCar lists 813 used Audi A6 Avant across the UK, from 595 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.

2018 Audi A6 Avant 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. All 62 cars listed here meet these rules. Page 2 lists every other 2018 Audi A6 Avant car, cheapest first.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 789 priced Audi A6 Avant adverts on AskCar as of 7 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Audi A6 Avant.

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 8 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value 2018 Audi A6 Avant: priced furthest below the AskCar estimate

These 10 are priced 8% to 21% under their AskCar estimate. Their asking prices run from £9,490 to £18,250.

Cheapest 2018 Audi A6 Avant: the lowest asking prices

These 10 are priced £8,850 to £10,994. They have covered 82,758 to 124,000 miles.

Lowest-mileage 2018 Audi A6 Avant

These 10 have covered 38,406 to 57,241 miles. Their asking prices run from £14,213 to £23,495.

Recently reduced 2018 Audi A6 Avant: the biggest price reductions in the 14 days to 7 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 7 November 2026. Their reductions since AskCar first saw them run from £700 to £4,000.

Newly advertised 2018 Audi A6 Avant: first seen by AskCar in the 7 days to 7 November 2026

These 7 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

2018 Audi A6 Avant by trim

Audi A6 Avant by price

Audi A6 Avant near you

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