2020 Audi A6 Avant 2.0 TDI S Line

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: 98,000 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 98,000 miles, around 24,500 more miles than is typical for its age. The AskCar estimate for this car is £15,718. It is priced at £15,490, which is £228 below that estimate. The AskCar estimate draws on 783 Audi A6 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 143 days ago. Its asking price has since fallen by £1,500. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Mawsley Motor Company in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £228 (1%) under the AskCar estimate of £15,718.

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 783 priced Audi A6 Avant adverts across different ages and specifications, as of 6 November 2026.

A 2020 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £18,500: the median of the 31 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2020 Audi A6 Avant has been on sale for at least 143 days.

Price history

AskCar first saw this advert on 16 June 2026 at £16,990. Its asking price is now £15,490, £1,500 less. The latest price cut was seen on 27 September 2026.

Price changes recorded:

• 16 June 2026: £16,990
• 13 August 2026: £16,749
• 17 August 2026: £16,490
• 28 August 2026: £15,990
• 27 September 2026: £15,490

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 21 January 2027.

It has had 4 MOTs. The latest, on 13 January 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 92,121 miles, which matches the advertised 98,000 miles.

Advertised mileage is about 24,500 miles higher than the median mileage of a 2020 Audi A6 Avant on AskCar.

Similar cars

14 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 6 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A6 Avant S Line, 2.0 diesel estate, white. Mileage: 108,966 miles. Price: £14,990, £500 less than this car. Dealer: Anchor Cars in Reading. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-3f2a00f63d4d
• 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 76,249 miles. Price: £17,999, £2,509 more than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-7543018c955e
• 2020 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 74,000 miles. Price: £18,750, £3,260 more than this car. Dealer: The Car Company in Belfast. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-e456e1599691

• The nearest: 2020 Audi A6 Avant S Line, 2.0 diesel estate, black, 33 miles from this car. Mileage: 44,041 miles. Price: £21,991, £6,501 more than this car. Dealer: Listers Audi Coventry in Coventry. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-acced0be318c