2021 Audi A6 Avant 2.0 TDI S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 5dr (201 bhp)
• Year: 2021
• Mileage: 69,000 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 149 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A6 Avant S Line has covered 69,000 miles, around 17,400 more miles than is typical for its age. Its asking price of £22,395 is £1,609 above the AskCar estimate of £20,786. The AskCar estimate draws on 785 Audi A6 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 111 days ago. The latest recorded MOT expiry date is 15 July 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. The seller is MC Autosales, based in Magherafelt. 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: £1,609 (7%) over the AskCar estimate of £20,786.

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 111 days.

Price history

AskCar first saw this advert on 17 July 2026 at £22,395. 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 5 November 2026: the latest record we hold ran out on 15 July 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 11 July 2025, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; nearside rear brake pad(s) wearing thin; offside rear brake pad(s) wearing thin.

Mileage at that test: 58,640 miles, which matches the advertised 69,000 miles.

Advertised mileage is about 17,400 miles higher than the median mileage of a 2021 Audi A6 Avant on AskCar.

Similar cars

8 other 2021 Audi A6 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £18,491 to £25,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A6 Avant S Line, 2.0 diesel estate, white. Mileage: 65,348 miles. Price: £19,640, £2,755 less than this car. Dealer: Riverside Volvo Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-936bbc4d7e07
• 2021 Audi A6 Avant S Line, 2.0 diesel estate, black. Mileage: 55,920 miles. Price: £21,695, £700 less than this car. Dealer: Stratstone Hitchin Audi in Hitchin. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-24c1afb209f4
• 2021 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 54,341 miles. Price: £21,990, £405 less than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-bc975a828b44

• The nearest: 2021 Audi A6 Avant S Line, 2.0 diesel estate, red, under a mile from this car. Mileage: 86,000 miles. Price: £19,995, £2,400 less than this car. Dealer: MC Autosales in Magherafelt. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2021-f69cdf96f716