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: 91,045 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 91,045 miles, this 2021 Audi A6 Saloon S Line has covered about 34,400 more miles than other 2021 Audi A6 Saloon cars. The AskCar estimate for this car is £16,324. It is priced at £15,770, which is £554 below that estimate. The AskCar estimate uses UK dealer asking prices, including 874 Audi A6 Saloon adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 90 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Evans Halshaw Ford Blackpool, based in Blackpool. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £554 (3%) under the AskCar estimate of £16,324.

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 874 priced Audi A6 Saloon adverts across different ages and specifications, as of 4 November 2026.

A 2021 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £18,300: the median of the 80 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 Audi A6 Saloon has been on sale for at least 90 days.

Price history

AskCar first saw this advert on 6 August 2026 at £16,820. Its asking price is now £15,770, £1,050 less.

Price changes recorded:

• 8 August 2026: £16,820
• 11 August 2026: £16,670
• 3 September 2026: £16,530
• 16 September 2026: £16,460
• 22 September 2026: £16,390
• 29 September 2026: £16,320
• 7 October 2026: £16,250
• 14 October 2026: £15,910
• 20 October 2026: £15,840
• 27 October 2026: £15,770

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 14 December 2026.

It has had 2 MOTs. The latest, on 25 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 72,392 miles, which matches the advertised 91,045 miles.

Advertised mileage is about 34,400 miles higher than the median mileage of a 2021 Audi A6 Saloon on AskCar.

Similar cars

13 other 2021 Audi A6 Saloon S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £16,400 to £21,000, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 92,280 miles. Price: £16,995, £1,225 more than this car. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-6b893042a43b
• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 97,450 miles. Price: £16,495, £725 more than this car. Dealer: Select Car Superstore in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-0797fd159c88
• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 82,000 miles. Price: £18,000, £2,230 more than this car. Dealer: Alistair Buchan in East Wemyss. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-5f385f15c136