2020 Audi A6 Avant 2.0 TDI S Line
Price: £19,985. Fair price: £558 (2%) under the AskCar estimate of £20,543, our expected asking price for this car from its model, age, mileage and specification, drawing on 778 priced Audi A6 Avant adverts on AskCar as of 2 November 2026.
AskCar lists 793 used Audi A6 Avant from 580 UK dealerships, as of 2 November 2026.
Overview
- Make: Audi
- Model: A6 Avant
- Trim: S Line
- Version: 2.0 TDI S Line S tronic FWD Euro 6 5dr (201 bhp)
- Year: 2020
- Mileage: 59,422 miles
- Fuel: Diesel
- Body: Estate, 5 doors, 5 seats
- Engine: 2.0 litres, 201 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Black
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 59,422 miles, this 2020 Audi A6 Avant S Line has covered about 14,000 fewer miles than other 2020 Audi A6 Avant cars. The dealer is asking £19,985, which is £558 below the AskCar estimate of £20,543. To work out the AskCar estimate, we analyse UK dealer adverts for 778 Audi A6 Avant cars across different ages and specifications. We first recorded this car for sale today. It is for sale at Listers Birmingham Audi in Solihull. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £558 (2%) under the AskCar estimate of £20,543.
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 778 priced Audi A6 Avant adverts across different ages and specifications, as of 2 November 2026.
A 2020 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £18,400: the median of the 32 for sale on AskCar, as of 2 November 2026.
Time on sale
AskCar first saw this 2020 Audi A6 Avant advertised today.
Price history
AskCar first saw this advert on 2 November 2026 at £19,985. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 14,000 miles lower than the median mileage of a 2020 Audi A6 Avant on AskCar.
Similar cars
14 other 2020 Audi A6 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £15,290 to £23,000, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2020 Audi A6 Avant S Line, 2.0 diesel estate, silver. Mileage: 61,653 miles. Price: £19,995, the same price as this car. Dealer: Forth Carz in Falkirk. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-dce5915d33a2
- 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 54,469 miles. Price: £23,000, £3,015 more than this car. Dealer: Sytner Group Audi Reading in Reading. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-1866fd06d900
- 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 54,000 miles. Price: £19,900, £85 less than this car. Dealer: Automoto UK in Banbridge. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-17697c90fe36
- The nearest: 2020 Audi A6 Avant S Line, 2.0 diesel estate, black, 11 miles from this car. Mileage: 44,041 miles. Price: £21,991, £2,006 more than this car. Dealer: Listers Audi Coventry in Coventry. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-acced0be318c
Browse all Audi A6 Avant cars for sale · 2020 Audi A6 Avant price guide
More like this
- Used Audi A6 Avant S Line prices
- Used Audi A6 Avant for sale under £20,000
- Used diesel Audi A6 Avant for sale
Photos
1 photo of this car is 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.