2020 Audi A6 Avant 2.0 TDI S Line
Price: £17,499. Fair price: £1,211 (6%) under the AskCar estimate of £18,710, our expected asking price for this car from its model, age, mileage and specification, drawing on 785 priced Audi A6 Avant adverts on AskCar as of 5 November 2026.
AskCar lists 810 used Audi A6 Avant from 596 UK dealerships, as of 5 November 2026.
Overview
- Make: Audi
- Model: A6 Avant
- Trim: S Line
- Version: 2.0 TDI 40 S Line S tronic FWD Euro 6 (s/s) 5dr (201 bhp)
- Year: 2020
- Mileage: 73,000 miles
- Fuel: Diesel
- Body: Estate, 5 doors, 5 seats
- Engine: 2.0 litres, 201 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Grey
- CO2: 124 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2020 Audi A6 Avant S Line has covered 73,000 miles. Priced at £17,499, it is advertised £1,211 below the AskCar estimate of £18,710. To work out the AskCar estimate, we analyse UK dealer adverts for 785 Audi A6 Avant cars across different ages and specifications. We first recorded this car for sale 6 days ago. Its advertised mileage matches the government's MOT record. The seller is Hendy Car Store Portsmouth, based in Portsmouth. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 5 November 2026.
Price
Fair price: £1,211 (6%) under the AskCar estimate of £18,710.
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 785 priced Audi A6 Avant adverts across different ages and specifications, as of 5 November 2026.
A 2020 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £18,500: the median of the 32 for sale on AskCar, as of 5 November 2026.
Time on sale
AskCar first saw this 2020 Audi A6 Avant advertised 6 days ago.
Price history
AskCar first saw this advert on 30 October 2026 at £17,499. 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 5 November 2026: valid until 24 April 2027.
It has had 5 MOTs. The latest, on 23 April 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 65,012 miles, which matches the advertised 73,000 miles.
Similar cars
15 other 2020 Audi A6 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £14,990 to £23,000, as of 5 November 2026.
The 3 closest to this car in mileage:
- 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 72,692 miles. Price: £16,495, £1,004 less than this car. Dealer: Banks Of The Tyne Motor Company in Hebburn. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-9187a355dc32
- 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 74,000 miles. Price: £18,750, £1,251 more than this car. Dealer: The Car Company in Belfast. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-e456e1599691
- 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 71,629 miles. Price: £18,995, £1,496 more than this car. Dealer: Wallace Car Sales in Bolton. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-1c2e90bf10d5
- The nearest: 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey, 32 miles from this car. Mileage: 76,249 miles. Price: £17,999, £500 more than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-7543018c955e
Browse all Audi A6 Avant cars for sale · 2020 Audi A6 Avant price guide
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Photos
54 photos of this car are on its AskCar page.
As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.