2021 Audi A6 Saloon 2.0 TDI S Line
Price: £18,495. Fair price: £786 (4%) over the AskCar estimate of £17,709, 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 Euro 6 4dr (201 bhp)
- Year: 2021
- Mileage: 82,640 miles
- Fuel: Diesel
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 201 bhp
- Gearbox: Automatic (S tronic)
- Colour: Black
- CO2: 142 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 82,640 miles on the clock, this 2021 Audi A6 Saloon S Line has done roughly 25,600 more miles than a typical 2021 Audi A6 Saloon. Priced at £18,495, it is advertised £786 above the AskCar estimate of £17,709. The AskCar estimate draws on 858 Audi A6 Saloon adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 123 days ago, and its asking price has since fallen by £500. The seller is Comiskey Motors, based in Newry. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £786 (4%) over the AskCar estimate of £17,709.
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 2021 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £18,500: the median of the 80 for sale on AskCar, as of 2 November 2026.
Time on sale
This 2021 Audi A6 Saloon has been on sale for at least 123 days.
Price history
AskCar first saw this advert on 2 July 2026 at £18,995. Its asking price is now £18,495, £500 less. The latest price cut was seen on 22 October 2026.
Price changes recorded:
- 2 July 2026: £18,995
- 22 October 2026: £18,495
Mileage and MOT
Advertised mileage is about 25,600 miles higher than the median mileage of a 2021 Audi A6 Saloon on AskCar.
Similar cars
14 other 2021 Audi A6 Saloon S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £15,770 to £21,000, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 82,000 miles. Price: £18,000, £495 less than this car. Dealer: Alistair Buchan in East Wemyss. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-5f385f15c136
- 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 79,921 miles. Price: £16,400, £2,095 less than this car. Dealer: Carworld Car Supermarket in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-fa93dd72f012
- 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, blue. Mileage: 75,378 miles. Price: £17,699, £796 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-b239d25d51d8
- The nearest: 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, black, 55 miles from this car. Mileage: 75,342 miles. Price: £19,490, £995 more than this car. Dealer: Fermanagh Auto Sales in Enniskillen. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-93b403df75b2
Browse all Audi A6 Saloon cars for sale · 2021 Audi A6 Saloon price guide
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- Used Audi A6 Saloon for sale near Newry
Photos
40 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.