2021 Audi A6 Avant 2.0 TDI Black Edition

Overview

• Make: Audi
• Model: A6 Avant
• Trim: Black Edition
• Version: 2.0 TDI Black Edition S tronic FWD Euro 6 5dr (201 bhp)
• Year: 2021
• Mileage: 82,100 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: 154 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 82,100 miles on the clock, this 2021 Audi A6 Avant Black Edition has done roughly 30,500 more miles than a typical 2021 Audi A6 Avant. Its asking price of £20,000 is £873 above the AskCar estimate of £19,127. To work out the AskCar estimate, we analyse UK dealer adverts for 774 Audi A6 Avant cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 160 days, and its asking price is down £1,000. The government's MOT record matches its advertised mileage. You can find this car at Quantum Cars in Romford. 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: £873 (4%) over the AskCar estimate of £19,127.

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 2021 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £22,400: the median of the 35 for sale on AskCar, as of 4 November 2026.

Time on sale

The dealer may accept less. This 2021 Audi A6 Avant has been on sale for at least 160 days, and its asking price has been cut by £1,000. About 6 in 10 of 2021 Audi A6 Avant cars are gone from sale within a month of being advertised: 35 of the 62 first advertised between 13 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 28 May 2026 at £21,000. Its asking price is now £20,000, £1,000 less. The latest price cut was seen on 24 September 2026.

Price changes recorded:

• 28 May 2026: £21,000
• 2 June 2026: £20,500
• 25 June 2026: £20,000
• 8 July 2026: £19,500
• 3 August 2026: £20,250
• 22 August 2026: £20,000
• 26 August 2026: £19,750
• 2 September 2026: £20,000
• 13 September 2026: £19,500
• 22 September 2026: £19,350
• 24 September 2026: £19,000
• 6 October 2026: £19,795
• 29 October 2026: £20,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 30 March 2027.

It failed its MOT on 31 March 2026 (nearside front headlamp aim too high; offside front headlamp aim too high) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 82,079 miles, which matches the advertised 82,100 miles.

Advertised mileage is about 30,500 miles higher than the median mileage of a 2021 Audi A6 Avant on AskCar.

Similar cars

14 other 2021 Audi A6 Avant Black Edition 2.0 diesel automatic estates are for sale at UK dealers, from £17,985 to £26,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, grey. Mileage: 61,000 miles. Price: £22,999, £2,999 more than this car. Dealer: DRB Car Sales in Tavistock. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-0a80d388f9db
• 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, grey. Mileage: 60,800 miles. Price: £22,750, £2,750 more than this car. Dealer: Stratstone Audi Approved Aylesbury in Aylesbury. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-59a37519044b
• 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, black. Mileage: 55,006 miles. Price: £23,250, £3,250 more than this car. Dealer: Harpers Cumbria in Carlisle. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-68320c0fb6de

• The nearest: 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, grey, 14 miles from this car. Mileage: 32,441 miles. Price: £26,200, £6,200 more than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-853a137e483d