2020 Audi A6 Avant 2.0 TDI S Line

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: 76,249 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: 156 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A6 Avant S Line has covered 76,249 miles, around 3,200 more miles than is typical for its age. Priced at £17,999, it is advertised £76 below the AskCar estimate of £18,075. The AskCar estimate uses UK dealer asking prices, including 785 Audi A6 Avant adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 12 days ago. The government's MOT record matches its advertised mileage. It is advertised by cinch Bellevue in Hart. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £76 (under 1%) under the AskCar estimate of £18,075.

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

This 2020 Audi A6 Avant has been on sale for at least 12 days.

Price history

AskCar first saw this advert on 24 October 2026 at £17,999. 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 21 October 2027.

It failed its MOT on 18 October 2026 (offside front tyre has a bulge, caused by separation or partial failure of its structure) and passed 4 days later, on 22 October 2026.

There were no advisories at the latest test.

Mileage at that test: 76,247 miles, which matches the advertised 76,249 miles.

Advertised mileage is about 3,200 miles higher than the median mileage of a 2020 Audi A6 Avant on AskCar.

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: 74,000 miles. Price: £18,750, £751 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: 73,000 miles. Price: £17,499, £500 less than this car. Dealer: Hendy Car Store Portsmouth in Portsmouth. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-6ac82ef797dd
• 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 72,692 miles. Price: £16,495, £1,504 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

• The nearest: 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey, 10 miles from this car. Mileage: 54,469 miles. Price: £23,000, £5,001 more than this car. Dealer: Sytner Group Audi Reading in Reading. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-1866fd06d900