2018 Audi A8 prices

There are 26 used 2018 Audi A8 cars for sale from UK dealers on AskCar, as of 4 November 2026. Typical asking price £21,000 (the median: half cost less, half cost more). The cheapest is £16,950. The middle half are priced between £19,500 and £23,500. Median mileage: about 56,000 miles.

Dealers lowered the asking price on 1 of the 26 2018 Audi A8 cars in the 14 days to 4 November 2026.

2018 Audi A8 prices by engine and mileage

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
3.0 diesel£21,000Too few for saleToo few for saleToo few for saleToo few for sale

Typical asking prices are of 2018 Audi A8 cars for sale on 4 November 2026, and are given only where at least 20 cars with a price are for sale.

2018 Audi A8 against other years

A 2019 Audi A8 car has a typical asking price of £20,500, as of 4 November 2026.

AskCar lists 229 used Audi A8 across the UK, from 195 dealerships.

As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2018 Audi A8 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. 21 of the 22 cars listed here meet these rules. Page 2 lists every other 2018 Audi A8 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 219 priced Audi A8 adverts on AskCar as of 4 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Audi A8.

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

Best value 2018 Audi A8: priced furthest below the AskCar estimate

These 10 are priced 2% to 17% under their AskCar estimate. Their asking prices run from £19,495 to £24,995.

Cheapest 2018 Audi A8: the lowest asking prices

These 10 are priced £17,295 to £21,000. They have covered 51,873 to 124,003 miles.

Lowest-mileage 2018 Audi A8

These 10 have covered 19,151 to 55,821 miles. Their asking prices run from £21,000 to £27,594.

Recently reduced 2018 Audi A8: the biggest price reductions in the 14 days to 4 November 2026

The dealer lowered the asking price on this car in the 14 days to 4 November 2026.

Newly advertised 2018 Audi A8: first seen by AskCar in the 7 days to 4 November 2026

These 4 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

Audi A8 by gearbox, fuel and body

Audi A8 prices by year

Audi A8 by trim

Audi A8 by price

Audi A8 near you

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