2018 Audi A6 prices
There are 4 used 2018 Audi A6 cars for sale from UK dealers on AskCar, as of 4 November 2026. The cheapest is £14,795.
Dealers lowered the asking price on more than a third of 2018 Audi A6 cars: 2 of the 4 in the 14 days to 4 November 2026.
AskCar lists 77 used Audi A6 across the UK, from 64 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 A6 cars for sale now
This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage and recently reduced. 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 2 cars listed here meet these rules.
The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 64 priced Audi A6 adverts on AskCar as of 4 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Audi A6.
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 2 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.
Best value 2018 Audi A6: priced furthest below the AskCar estimate
Their asking prices run from £15,980 to £39,985.
- 2018 Audi A6 TFSI Black Edition, automatic, petrol, saloon, 4 doors, grey. Mileage: 37,942 miles. Price: £15,980, reduced by £330 from £16,310 since AskCar first saw it on 19 September 2026, 46 days ago. Good value: £2,711 (14%) under the AskCar estimate of £18,691. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 21 June 2027. Dealer: Evans Halshaw Ford Chester in Chester. AskCar page: https://askcar.co.uk/car/audi-a6-2018-0941931b3a5d
- 2018 Audi A6 3.0 S Line, automatic, diesel, estate, 5 doors, white. Mileage: 15,000 miles. Price: £39,985, unchanged since AskCar first saw it on 28 May 2026, 160 days ago. Above the going rate: £15,099 (60%) over the AskCar estimate of £24,886. Euro 6 emissions standard. ULEZ compliant. Dealer: Bedford Specialist Cars in Bedford. AskCar page: https://askcar.co.uk/car/audi-a6-2018-7db6d259e863
Cheapest 2018 Audi A6: the lowest asking prices
These 2 are priced £15,980 to £39,985. They have covered 15,000 to 37,942 miles.
- 2018 Audi A6 TFSI Black Edition: £15,980, 37,942 miles. Listed in full under best value.
- 2018 Audi A6 3.0 S Line: £39,985, 15,000 miles. Listed in full under best value.
Lowest-mileage 2018 Audi A6
These 2 have covered 15,000 to 37,942 miles. Their asking prices run from £15,980 to £39,985.
- 2018 Audi A6 3.0 S Line: £39,985, 15,000 miles. Listed in full under best value.
- 2018 Audi A6 TFSI Black Edition: £15,980, 37,942 miles. Listed in full under best value.
Recently reduced 2018 Audi A6: 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.
- 2018 Audi A6 TFSI Black Edition: £15,980, 37,942 miles. Listed in full under best value.
Audi A6 by trim
Audi A6 near you
- In England (58 cars)
- In Scotland (4 cars)
- In Wales (8 cars)
- In Northern Ireland (7 cars)
- Near Warrington (7 cars)
- Near Bracknell (7 cars)
- Near Manchester (6 cars)
- Near Liverpool (6 cars)
- Near Bolton (6 cars)
- Near Reading (6 cars)
- Near Farnborough (6 cars)
- Near Loughborough (6 cars)
- Near Egham (6 cars)
- Near Hale (6 cars)
- Near Ripley (6 cars)
- Near Ashby-de-la-Zouch (6 cars)
- Near Coventry (5 cars)
- Near Hillingdon (5 cars)
- Near Derby (5 cars)
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