2021 Audi A6 Saloon 2.0 TDI S Line

Overview

• Make: Audi
• Model: A6 Saloon
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 4dr 40 (201 bhp)
• Year: 2021
• Mileage: 72,952 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 72,952 miles on the clock, this 2021 Audi A6 Saloon S Line has done roughly 15,900 more miles than a typical 2021 Audi A6 Saloon. Its asking price of £17,995 is £490 below the AskCar estimate of £18,485. The AskCar estimate draws on 858 Audi A6 Saloon adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 158 days ago, the asking price has dropped by £1,255. Our latest MOT record expired on 25 October 2026. Check the current position with the dealer. We checked its advertised mileage against the government's MOT record, and they match. The seller is Motorzone Durham, based in Durham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £490 (2%) under the AskCar estimate of £18,485.

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 858 priced Audi A6 Saloon adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £18,500: the median of the 80 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A6 Saloon has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £19,250. Its asking price is now £17,995, £1,255 less. The latest price cut was seen on 6 August 2026.

Price changes recorded:

• 28 May 2026: £19,250
• 8 June 2026: £18,495
• 6 August 2026: £17,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 25 October 2026; ask the dealer for the current MOT.

It has had 4 MOTs. The latest, on 30 September 2025, passed.

Advisories at the latest test: under trays fitted blocking view of components.

Mileage at that test: 65,686 miles, which matches the advertised 72,952 miles.

Advertised mileage is about 15,900 miles higher than the median mileage of a 2021 Audi A6 Saloon on AskCar.

Similar cars

14 other 2021 Audi A6 Saloon S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £15,770 to £21,000, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 75,342 miles. Price: £19,490, £1,495 more than this car. Dealer: Fermanagh Auto Sales in Enniskillen. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-93b403df75b2
• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, blue. Mileage: 75,378 miles. Price: £17,699, £296 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-b239d25d51d8
• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 69,561 miles. Price: £18,498, £503 more than this car. Dealer: Arnold Clark Glasgow Bishopbriggs MG in Bishopbriggs. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-2be7c0bb819c

• The nearest: 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, silver, 75 miles from this car. Mileage: 57,920 miles. Price: £21,000, £3,005 more than this car. Dealer: Sytner Group Huddersfield Audi in Huddersfield. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-66e67805c111