2018 Audi A6 Saloon 3.0 TDI V6 S Line
Price: £15,494. Fair price: £872 (5%) over the AskCar estimate of £14,622, 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: 3.0 TDI V6 50 S Line Tiptronic 4WD Euro 6 (s/s) 4dr (282 bhp)
- Year: 2018
- Mileage: 103,347 miles
- Fuel: Diesel
- Body: Saloon, 4 doors, 5 seats
- Engine: 3.0 litres, 282 bhp
- Gearbox: Automatic (Tiptronic)
- Drive: Four-wheel drive
- Colour: White
- CO2: 146 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 103,347 miles on the clock, this 2018 Audi A6 Saloon S Line has done roughly 33,800 more miles than a typical 2018 Audi A6 Saloon. Priced at £15,494, it is advertised £872 above the AskCar estimate of £14,622. To work out the AskCar estimate, we analyse UK dealer adverts for 858 Audi A6 Saloon cars across different ages and specifications. This car was first seen in our listings data 11 days ago. The government's MOT record matches its advertised mileage. You can find this car at Alisons Automotive Group in Berkeley. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £872 (5%) over the AskCar estimate of £14,622.
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 3.0 diesel engine is typically advertised at £17,500: the median of the 13 for sale on AskCar, as of 2 November 2026.
Time on sale
This 2018 Audi A6 Saloon has been on sale for at least 11 days.
Price history
AskCar first saw this advert on 22 October 2026 at £15,494. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 22 January 2027.
It has had 5 MOTs. The latest, on 23 January 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 91,029 miles, which matches the advertised 103,347 miles.
Advertised mileage is about 33,800 miles higher than the median mileage of a 2018 Audi A6 Saloon on AskCar.
Similar cars
10 other 2018 Audi A6 Saloon S Line 3.0 diesel automatic saloons are for sale at UK dealers, from £11,490 to £21,998, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 91,370 miles. Price: £15,690, £196 more than this car. Dealer: SR Motors in Swindon. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-1264248cfbfe
- 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 116,650 miles. Price: £13,990, £1,504 less than this car. Dealer: Harvey Cooper Cars in Ripon. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-6fc4b430171b
- 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 80,253 miles. Price: £17,498, £2,004 more than this car. Dealer: Arnold Clark Ayr Kia in Prestwick. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c5ea96a88e51
Browse all Audi A6 Saloon cars for sale · 2018 Audi A6 Saloon price guide
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Photos
16 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.