2021 Audi A6 Avant 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 2.0 40 TFSI S Line S tronic FWD Euro 6 5dr (201 bhp)
• Year: 2021
• Mileage: 34,208 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 169 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A6 Avant S Line has covered 34,208 miles, around 16,000 fewer miles than is typical for its age. The AskCar estimate for this car is £23,430. It is priced at £21,940, which is £1,490 below that estimate. The AskCar estimate uses UK dealer asking prices, including 772 Audi A6 Avant adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 2 days ago. Its asking price has since fallen by £4,030. The latest recorded MOT expiry date is 7 November 2026, which has passed. Confirm its status 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 Big Motoring World Enfield in Waltham Cross. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 14 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,490 (6%) under the AskCar estimate of £23,430.

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 772 priced Audi A6 Avant adverts across different ages and specifications, as of 14 November 2026.

A 2021 Audi A6 Avant with the 2.0 petrol engine is typically advertised at £22,400: the median of the 38 for sale on AskCar, as of 14 November 2026.

Time on sale

AskCar first saw this 2021 Audi A6 Avant advertised 2 days ago. About 6 in 10 of 2021 Audi A6 Avant cars are gone from sale within a month of being advertised: 38 of the 65 first advertised between 15 July 2026 and 11 October 2026.

Price history

AskCar first saw this advert on 12 November 2026 at £25,970. Its asking price is now £21,940, £4,030 less. The latest price cut was seen on 14 November 2026.

Price changes recorded:

• 12 November 2026: £25,970
• 13 November 2026: £21,950
• 14 November 2026: £21,940

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 14 November 2026: the latest record we hold ran out on 7 November 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 4 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 28,746 miles, which matches the advertised 34,208 miles.

Advertised mileage is about 16,000 miles lower than the median mileage of a 2021 Audi A6 Avant on AskCar.

Similar cars

2 other 2021 Audi A6 Avant S Line 2.0 petrol automatic estates are for sale at UK dealers, from £20,995 to £21,499, as of 14 November 2026.

The 2 closest to this car in mileage:

• 2021 Audi A6 Avant S Line, 2.0 petrol estate, red. Mileage: 42,025 miles. Price: £21,499, £441 less than this car. Dealer: Lookers in Newtownabbey. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-9e8033e97e5f
• 2021 Audi A6 Avant S Line, 2.0 petrol estate, white. Mileage: 50,250 miles. Price: £20,995, £945 less than this car. Dealer: Somerset Motor Company in Weston-super-Mare. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-c4eb3c6dcf3c