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: 55,000 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 4 seats
• Engine: 4.0 litres, 592 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 295 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 55,000 miles on the clock, this 2021 Audi RS6 Avant Carbon Black has done roughly 17,000 more miles than a typical 2021 Audi RS6 Avant. The AskCar estimate for this car is £66,454. It is priced at £64,995, which is £1,459 below that estimate. The AskCar estimate draws on 271 Audi RS6 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 38 days ago. The government's MOT record matches its advertised mileage. You can find this car at Cult Automotive in Robertsbridge. 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: £1,459 (2%) under the AskCar estimate of £66,454.

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 38 days.

Price history

AskCar first saw this advert on 30 September 2026 at £64,995. 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 7 November 2026: valid until 20 April 2027.

It has had 3 MOTs. The latest, on 21 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 52,792 miles, which matches the advertised 55,000 miles.

Advertised mileage is about 17,000 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 £65,995 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: 54,100 miles. Price: £65,995, £1,000 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, black. Mileage: 60,000 miles. Price: £71,495, £6,500 more than this car. Dealer: My Next Car in Sandy. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-6e23aebd4622
• 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, grey. Mileage: 47,637 miles. Price: £68,995, £4,000 more than this car. Dealer: John Clark Motor Group in Inverness. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-c548353eae84

• The nearest: 2021 Audi RS6 Avant Carbon Black, 4.0 petrol estate, 31 miles from this car. Mileage: 31,000 miles. Price: £73,995, £9,000 more than this car. Dealer: Southern Prestige Cars in Crawley. AskCar page: https://askcar.co.uk/car/audi-rs6-avant-2021-3c5349dd67ca