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 4WD Euro 6 5dr (201 bhp)
• Year: 2020
• Mileage: 61,653 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 119 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A6 Avant S Line has covered 61,653 miles, around 11,300 fewer miles than is typical for its age. The dealer is asking £19,995, which is £88 below the AskCar estimate of £20,083. To work out the AskCar estimate, we analyse UK dealer adverts for 785 Audi A6 Avant cars across different ages and specifications. It first appeared in our advert records 41 days ago. Our latest MOT record expired on 4 August 2026. Check the current position with the dealer. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Forth Carz in Falkirk. 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: £88 (under 1%) under the AskCar estimate of £20,083.

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 41 days.

Price history

AskCar first saw this advert on 25 September 2026 at £19,995. 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: the latest record we hold ran out on 4 August 2026; ask the dealer for the current MOT.

It failed its MOT on 25 July 2025 (offside headlamp aim too high) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 49,468 miles, which matches the advertised 61,653 miles.

Advertised mileage is about 11,300 miles lower 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, black. Mileage: 59,856 miles. Price: £19,500, £495 less than this car. Dealer: Invicta Omoda Jaecoo Mazda Bolton in Bolton. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-ddb515e5b8c6
• 2020 Audi A6 Avant S Line, 2.0 diesel estate, black. Mileage: 59,422 miles. Price: £19,985, the same price as this car. Dealer: Listers Birmingham Audi in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-c81a88f062aa
• 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 67,157 miles. Price: £18,150, £1,845 less than this car. Dealer: EMG Motor Group Haverhill in Haverhill. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-2ade24e613db

• The nearest: 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey, 114 miles from this car. Mileage: 72,692 miles. Price: £16,495, £3,500 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