2021 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: 2021
• Mileage: 32,800 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: 149 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 32,800 miles, this 2021 Audi A6 Avant S Line has covered about 18,400 fewer miles than other 2021 Audi A6 Avant cars. The AskCar estimate for this car is £25,779. It is priced at £25,995, which is £216 above 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 have tracked this advert for 3 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Hynes Motors, based in Newry. 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: £216 (under 1%) over the AskCar estimate of £25,779.

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 2021 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £23,000: the median of the 37 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2021 Audi A6 Avant advertised 3 days ago. About 6 in 10 of 2021 Audi A6 Avant cars are gone from sale within a month of being advertised: 36 of the 63 first advertised between 13 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £25,995. 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 6 November 2026: valid until 4 July 2027.

It has had 3 MOTs. The latest, on 12 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 29,745 miles, which matches the advertised 32,800 miles.

Advertised mileage is about 18,400 miles lower than the median mileage of a 2021 Audi A6 Avant on AskCar.

Similar cars

9 other 2021 Audi A6 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £18,491 to £24,995, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 33,114 miles. Price: £24,995, £1,000 less than this car. Dealer: Group 1 Automotive Chelmsford Audi in Chelmsford. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-775ebcd21347
• 2021 Audi A6 Avant S Line, 2.0 diesel estate, white. Mileage: 49,315 miles. Price: £22,999, £2,996 less than this car. Dealer: Fresh Motors in Watton. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-06b2368d3dba
• 2021 Audi A6 Avant S Line, 2.0 diesel estate, black. Mileage: 51,313 miles. Price: £22,990, £3,005 less than this car. Dealer: Malt Mill Motors in Nottingham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-68090e29dd0b

• The nearest: 2021 Audi A6 Avant S Line, 2.0 diesel estate, white, 40 miles from this car. Mileage: 69,000 miles. Price: £22,395, £3,600 less than this car. Dealer: MC Autosales in Magherafelt. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-20a37b0c61d7