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: 61,487 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

This 2021 Audi A6 Saloon S Line has covered 61,487 miles, around 4,400 more miles than is typical for its age. Priced at £17,795, it is advertised £2,205 below the AskCar estimate of £20,000. The AskCar estimate uses 858 UK dealer adverts for the Audi A6 Saloon, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 7 days ago. The recorded MOT expired on 29 October 2026, so ask the dealer whether it has been renewed. Its advertised mileage matches the government's MOT record. The seller is Tenby Car Supermarket, based in Luton. 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

Good value: £2,205 (11%) under the AskCar estimate of £20,000.

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 7 days.

Price history

AskCar first saw this advert on 26 October 2026 at £17,795. 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 2 November 2026: the latest record we hold ran out on 29 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 23 October 2025, passed.

Advisories at the latest test: front brake pad(s) wearing thin.

Mileage at that test: 47,441 miles, which matches the advertised 61,487 miles.

Advertised mileage is about 4,400 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, silver. Mileage: 57,920 miles. Price: £21,000, £3,205 more than this car. Dealer: Sytner Group Huddersfield Audi in Huddersfield. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-66e67805c111
• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 57,493 miles. Price: £19,500, £1,705 more than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-6f5f3f711b1f
• 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 54,000 miles. Price: £21,000, £3,205 more than this car. Dealer: GMC Cars Online in Crawley. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-67b0f5f6c031

• The nearest: 2021 Audi A6 Saloon S Line, 2.0 diesel saloon, blue, 40 miles from this car. Mileage: 75,378 miles. Price: £17,699, £96 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-b239d25d51d8