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 Euro 6 5dr (201 bhp)
• Year: 2020
• Mileage: 59,856 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Colour: Black
• CO2: 152 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 59,856 miles, this 2020 Audi A6 Avant S Line has covered about 13,400 fewer miles than other 2020 Audi A6 Avant cars. Priced at £19,500, it is advertised £262 below the AskCar estimate of £19,762. To work out the AskCar estimate, we analyse UK dealer adverts for 774 Audi A6 Avant cars across different ages and specifications. This car was first seen in our listings data 1 day ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Invicta Omoda Jaecoo Mazda Bolton, based in Bolton. 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: £262 (1%) under the AskCar estimate of £19,762.

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

AskCar first saw this 2020 Audi A6 Avant advertised 1 day ago.

Price history

AskCar first saw this advert on 3 November 2026 at £19,500. 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 4 November 2026: valid until 21 June 2027.

It has had 4 MOTs. The latest, on 18 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 55,738 miles, which matches the advertised 59,856 miles.

Advertised mileage is about 13,400 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 £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, black. Mileage: 59,422 miles. Price: £19,985, £485 more than 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, silver. Mileage: 61,653 miles. Price: £19,995, £495 more than 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, £3,500 more than this car. Dealer: Sytner Group Audi Reading in Reading. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-1866fd06d900

• The nearest: 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey, 2 miles from this car. Mileage: 71,629 miles. Price: £18,995, £505 less than this car. Dealer: Wallace Car Sales in Bolton. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-1c2e90bf10d5