2021 Audi RS6 Avant 4.0 TFSI V8 Carbon Black

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: 54,369 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 has covered 54,369 miles, around 16,600 more miles than is typical for its age. The dealer is asking £62,500, which is £3,888 below the AskCar estimate of £66,388. To work out the AskCar estimate, we analyse UK dealer adverts for 273 Audi RS6 Avant cars across different ages and specifications. This car was first seen in our listings data today. Its advertised mileage matches the government's MOT record. The seller is Saxtons.co.uk, based in Chelmsford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 11 November 2026.

How we estimate prices and check cars

Price

Fair price: £3,888 (5%) under the AskCar estimate of £66,388.

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 273 priced Audi RS6 Avant adverts across different ages and specifications, as of 11 November 2026.

A 2021 Audi RS6 Avant with the 4.0 petrol engine is typically advertised at £72,000: the median of the 43 for sale on AskCar, as of 11 November 2026.

Time on sale

AskCar first saw this 2021 Audi RS6 Avant advertised today.

Price history

AskCar first saw this advert on 11 November 2026 at £62,500. 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 11 November 2026: valid until 18 October 2027.

It has had 4 MOTs. The latest, on 19 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 54,023 miles, which matches the advertised 54,369 miles.

Advertised mileage is about 16,600 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 11 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, grey. Mileage: 54,100 miles. Price: £65,995, £3,495 more than this car. Dealer: PSF Cars in Macclesfield. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-d5264c6e89b3
• 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, grey. Mileage: 55,000 miles. Price: £64,995, £2,495 more than this car. Dealer: Cult Automotive in Robertsbridge. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-3433aa9e1069
• 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, black. Mileage: 60,000 miles. Price: £71,495, £8,995 more than this car. Dealer: My Next Car in Sandy. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-6e23aebd4622

• The nearest: 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, grey, 16 miles from this car. Mileage: 34,445 miles. Price: £71,990, £9,490 more than this car. Dealer: Leigh Cars in Southend-on-Sea. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-efb28a9efbd0