2018 Audi A6 Saloon 2.0 TDI S Line
Price: £19,995. Fair price: £815 (4%) over the AskCar estimate of £19,180, our expected asking price for this car from its model, age, mileage and specification, drawing on 858 priced Audi A6 Saloon adverts on AskCar as of 2 November 2026.
AskCar lists 886 used Audi A6 Saloon from 654 UK dealerships, as of 2 November 2026.
Overview
- Make: Audi
- Model: A6 Saloon
- Trim: S Line
- Version: 2.0 TDI S Line S tronic FWD Euro 6 4dr (201 bhp)
- Year: 2018
- Mileage: 24,000 miles
- Fuel: Diesel
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 201 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2018 Audi A6 Saloon S Line is advertised with 24,000 miles, approximately 45,500 below the typical mileage for its age. Its asking price of £19,995 is £815 above the AskCar estimate of £19,180. The AskCar estimate uses 858 UK dealer adverts for the Audi A6 Saloon, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 30 days ago. You can find this car at Southern Prestige Cars in Crawley. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £815 (4%) over the AskCar estimate of £19,180.
The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.
It draws on 858 priced Audi A6 Saloon adverts across different ages and specifications, as of 2 November 2026.
A 2018 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £14,800: the median of the 52 for sale on AskCar, as of 2 November 2026.
Time on sale
This 2018 Audi A6 Saloon has been on sale for at least 30 days.
Price history
AskCar first saw this advert on 3 October 2026 at £19,995. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 45,500 miles lower than the median mileage of a 2018 Audi A6 Saloon on AskCar.
Similar cars
29 other 2018 Audi A6 Saloon S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £7,995 to £21,250, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 24,000 miles. Price: £19,995, the same price as this car. Dealer: OC Davies & Son in Carmarthen. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-cb889198766a
- 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, blue. Mileage: 34,280 miles. Price: £16,995, £3,000 less than this car. Dealer: Days Motorpark in Swansea. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-d877339d0d0f
- 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 12,900 miles. Price: £21,250, £1,255 more than this car. Dealer: Group 1 Automotive Cheshire Oaks Audi in Ellesmere Port. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-10b44af84f3d
- The nearest: 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, grey, 26 miles from this car. Mileage: 43,000 miles. Price: £16,989, £3,006 less than this car. Dealer: Bluehawk Automotive in Hounslow. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c0547a8266b4
Browse all Audi A6 Saloon cars for sale · 2018 Audi A6 Saloon price guide
More like this
- Used Audi A6 Saloon S Line prices
- Used Audi A6 Saloon for sale under £20,000
- Used diesel Audi A6 Saloon for sale
Photos
28 photos of this car are on its AskCar page.
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.