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 Euro 6 5dr (201 bhp)
• Year: 2021
• Mileage: 37,637 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Colour: Grey
• CO2: 154 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A6 Avant Black Edition has covered 37,637 miles, around 14,000 fewer miles than is typical for its age. The dealer is asking £23,500, which is £1,807 below the AskCar estimate of £25,307. To work out the AskCar estimate, we analyse UK dealer adverts for 785 Audi A6 Avant cars across different ages and specifications. We first recorded this advert 22 days ago, and its asking price has since fallen by £495. Its advertised mileage matches the government's MOT record. It is advertised by Uniche Motor Company in Maidstone. 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: £1,807 (7%) under the AskCar estimate of £25,307.

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 2021 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £22,400: the median of the 37 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 Audi A6 Avant has been on sale for at least 22 days.

Price history

AskCar first saw this advert on 14 October 2026 at £23,995. Its asking price is now £23,500, £495 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 14 October 2026: £23,995
• 27 October 2026: £23,750
• 29 October 2026: £23,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 14 April 2027.

It failed its MOT on 15 April 2026 (engine MIL inoperative or indicates a malfunction) and passed later the same day.

Advisories at the latest test: nearside rear child seat fitted not allowing full inspection of adult belt; offside rear child seat fitted not allowing full inspection of adult belt; nearside front tyre worn close to legal limit/worn on edge 3mm.

Mileage at that test: 33,305 miles, which matches the advertised 37,637 miles.

Advertised mileage is about 14,000 miles lower than the median mileage of a 2021 Audi A6 Avant on AskCar.

Similar cars

15 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, black. Mileage: 38,749 miles. Price: £25,498, £1,998 more than this car. Dealer: Arnold Clark Dundee Kia in Dundee. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-a8721c0cae9b
• 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, black. Mileage: 36,461 miles. Price: £24,999, £1,499 more than this car. Dealer: Carherts in Aylesbury. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-bc6869867511
• 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, white. Mileage: 33,959 miles. Price: £25,095, £1,595 more than this car. Dealer: Cars 2 Omoda Jaecoo Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-becaed63ef48

• The nearest: 2021 Audi A6 Avant Black Edition, 2.0 diesel estate, white, 22 miles from this car. Mileage: 52,603 miles. Price: £21,995, £1,505 less than this car. Dealer: UK Car Solutions in Bromley. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-f2bb1b75aa0a