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: 74,000 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: 153 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A6 Avant S Line is advertised with 74,000 miles on the clock. Its asking price of £18,750 is £383 above the AskCar estimate of £18,367. The AskCar estimate uses 774 UK dealer adverts for the Audi A6 Avant, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 35 days ago, and its asking price has since fallen by £700. Its advertised mileage matches the government's MOT record. It is advertised by The Car Company in Belfast. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £383 (2%) over the AskCar estimate of £18,367.

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 774 priced Audi A6 Avant adverts across different ages and specifications, as of 4 November 2026.

A 2020 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £18,500: the median of the 33 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2020 Audi A6 Avant has been on sale for at least 35 days.

Price history

AskCar first saw this advert on 30 September 2026 at £19,450. Its asking price is now £18,750, £700 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 30 September 2026: £19,450
• 4 November 2026: £18,750

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 4 November 2026.

It failed its MOT on 4 November 2024 and passed 1 day later, on 5 November 2024.

There were no advisories at the latest test.

Mileage at that test: 45,451 miles, which matches the advertised 74,000 miles.

Advertised mileage is about 800 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 £15,290 to £23,000, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 73,000 miles. Price: £17,499, £1,251 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: £16,995, £1,755 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: 76,249 miles. Price: £17,999, £751 less than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-7543018c955e

• The nearest: 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey, 23 miles from this car. Mileage: 54,000 miles. Price: £19,900, £1,150 more than this car. Dealer: Automoto UK in Banbridge. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-17697c90fe36