2021 Audi RS6 Avant 4.0 TFSI V8 Carbon Black

Price: £70,990. Fair price: £1,288 (1%) under the AskCar estimate of £72,278, our expected asking price for this car from its model, age, mileage and specification, drawing on 271 priced Audi RS6 Avant adverts on AskCar as of 7 November 2026.

AskCar lists 279 used Audi RS6 Avant from 205 UK dealerships, as of 7 November 2026.

Overview

  • Make: Audi
  • Model: RS6 Avant
  • Trim: Carbon Black
  • Version: 4.0 TFSI V8 Carbon Black Tiptronic 4WD Euro 6 (s/s) 5dr (592 bhp)
  • Year: 2021
  • Mileage: 40,000 miles
  • Fuel: Petrol
  • Body: Estate, 5 doors, 4 seats
  • Engine: 4.0 litres, 592 bhp
  • Gearbox: Automatic (Tiptronic)
  • Drive: Four-wheel drive
  • Colour: Black
  • CO2: 295 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi RS6 Avant Carbon Black is advertised with 40,000 miles, approximately 2,000 above the typical mileage for its age. Priced at £70,990, it is advertised £1,288 below the AskCar estimate of £72,278. The AskCar estimate uses UK dealer asking prices, including 271 Audi RS6 Avant adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 163 days ago. Its asking price has since fallen by £2,500. Our latest MOT record expired on 2 September 2026. Check the current position with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at M A Performance Cars in Sutton Coldfield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,288 (1%) under the AskCar estimate of £72,278.

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 271 priced Audi RS6 Avant adverts across different ages and specifications, as of 7 November 2026.

A 2021 Audi RS6 Avant with the 4.0 petrol engine is typically advertised at £72,000: the median of the 40 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2021 Audi RS6 Avant has been on sale for at least 163 days.

Price history

AskCar first saw this advert on 28 May 2026 at £73,490. Its asking price is now £70,990, £2,500 less. The latest price cut was seen on 6 October 2026.

Price changes recorded:

  • 29 May 2026: £73,490
  • 16 June 2026: £71,990
  • 26 June 2026: £73,490
  • 16 August 2026: £71,990
  • 6 October 2026: £69,990
  • 23 October 2026: £70,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: the latest record we hold ran out on 2 September 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 29 August 2025, passed.

Advisories at the latest test: rear brake pad(s) wearing thin appear low; nearside front tyre worn close to legal limit/worn on edge wearing on inner edge and multiple cuts in tyre; nearside rear tyre worn close to legal limit/worn on edge wearing on inner edge and multiple cuts in tyre; and 1 more.

Mileage at that test: 35,928 miles, which matches the advertised 40,000 miles.

Advertised mileage is about 2,000 miles higher than the median mileage of a 2021 Audi RS6 Avant on AskCar.

Similar cars

10 other 2021 Audi RS6 Avant Carbon Black 4.0 petrol automatic estates are for sale at UK dealers, from £64,995 to £77,895, as of 7 November 2026.

The 3 closest to this car in mileage:

  • 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, grey. Mileage: 39,965 miles. Price: £77,895, £6,905 more than this car. Dealer: Redline Specialist Cars in Knaresborough. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-ac1bf83eda69
  • 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, black. Mileage: 38,000 miles. Price: £71,995, £1,005 more than this car. Dealer: V G Performance Cars in Andover. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-10d4d08de1c2
  • 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, grey. Mileage: 45,000 miles. Price: £69,990, £1,000 less than this car. Dealer: Nation Car Supermarket in Halifax. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-0f42aa2fd1a7
  • The nearest: 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, grey, 51 miles from this car. Mileage: 54,100 miles. Price: £65,995, £4,995 less than this car. Dealer: PSF Cars in Macclesfield. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-d5264c6e89b3

Browse all Audi RS6 Avant cars for sale · 2021 Audi RS6 Avant price guide

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Photos

47 photos of this car are on its AskCar page.

As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.