2021 Audi A6 Avant 2.0 S Line
Price: £21,695. Fair price: £317 (1%) under the AskCar estimate of £22,012, our expected asking price for this car from its model, age, mileage and specification, drawing on 783 priced Audi A6 Avant adverts on AskCar as of 6 November 2026.
AskCar lists 808 used Audi A6 Avant from 592 UK dealerships, as of 6 November 2026.
Overview
- Make: Audi
- Model: A6 Avant
- Trim: S Line
- Version: 2.0 S Line S tronic Euro 6 5dr
- Year: 2021
- Mileage: 63,200 miles
- Body: Estate, 5 doors, 5 seats
- Engine: 2.0 litres
- Gearbox: Automatic (S tronic)
- Colour: Black
- Emissions standard: Euro 6
About this car
This 2021 Audi A6 Avant S Line has covered 63,200 miles, around 12,000 more miles than is typical for its age. Priced at £21,695, it is advertised £317 below the AskCar estimate of £22,012. To work out the AskCar estimate, we analyse UK dealer adverts for 783 Audi A6 Avant cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 107 days, and its asking price is down £300. The government's MOT record matches its advertised mileage. It is advertised by Marlow Autos in High Wycombe. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 6 November 2026.
Price
Fair price: £317 (1%) under the AskCar estimate of £22,012.
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 783 priced Audi A6 Avant adverts across different ages and specifications, as of 6 November 2026.
Time on sale
The dealer may accept less. This 2021 Audi A6 Avant has been on sale for at least 107 days, and its asking price has been cut by £300. About 6 in 10 of 2021 Audi A6 Avant cars are gone from sale within a month of being advertised: 36 of the 63 first advertised between 13 July 2026 and 3 October 2026.
Price history
AskCar first saw this advert on 22 July 2026 at £21,995. Its asking price is now £21,695, £300 less. The latest price cut was seen on 4 November 2026.
Price changes recorded:
- 23 July 2026: £21,995
- 4 November 2026: £21,695
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 8 June 2027.
It has had one MOT, on 9 June 2026, and passed.
There were no advisories at the latest test.
Mileage at that test: 63,226 miles, which matches the advertised 63,200 miles.
Advertised mileage is about 12,000 miles higher than the median mileage of a 2021 Audi A6 Avant on AskCar.
Browse all Audi A6 Avant cars for sale · 2021 Audi A6 Avant price guide
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- Used Audi A6 Avant S Line prices
- Used Audi A6 Avant for sale under £30,000
- Used Audi A6 Avant for sale near High Wycombe
Photos
84 photos of this car are on its AskCar page.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.