2021 Audi A6 Saloon 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A6 Saloon
• Trim: S Line
• Version: 2.0 40 TFSI S Line S tronic FWD Euro 6 4dr (201 bhp)
• Year: 2021
• Mileage: 38,495 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A6 Saloon S Line has covered 38,495 miles, around 16,300 fewer miles than is typical for its age. Priced at £19,995, it is advertised £646 below the AskCar estimate of £20,641. To work out the AskCar estimate, we analyse UK dealer adverts for 871 Audi A6 Saloon cars across different ages and specifications. We first saw this car advertised 126 days ago. Its asking price has since fallen by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Western Auto Solutions in Slough. 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: £646 (3%) under the AskCar estimate of £20,641.

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 871 priced Audi A6 Saloon adverts across different ages and specifications, as of 5 November 2026.

A 2021 Audi A6 Saloon with the 2.0 petrol engine is typically advertised at £18,400: the median of the 81 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 Audi A6 Saloon has been on sale for at least 126 days.

Price history

AskCar first saw this advert on 2 July 2026 at £20,995. Its asking price is now £19,995, £1,000 less. The latest price cut was seen on 23 September 2026.

Price changes recorded:

• 2 July 2026: £20,995
• 29 July 2026: £21,795
• 7 August 2026: £21,495
• 20 August 2026: £20,995
• 4 September 2026: £20,495
• 23 September 2026: £19,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 23 November 2026.

It has had 2 MOTs. The latest, on 22 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 29,370 miles, which matches the advertised 38,495 miles.

Advertised mileage is about 16,300 miles lower than the median mileage of a 2021 Audi A6 Saloon on AskCar.

Similar cars

2 other 2021 Audi A6 Saloon S Line 2.0 petrol automatic saloons are for sale at UK dealers, from £18,990 to £20,985, as of 5 November 2026.

The 2 closest to this car in mileage:

• 2021 Audi A6 Saloon S Line, 2.0 petrol saloon, grey. Mileage: 39,473 miles. Price: £18,990, £1,005 less than this car. Dealer: Carworld Car Supermarket in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-2deb5160c378
• 2021 Audi A6 Saloon S Line, 2.0 petrol saloon, white. Mileage: 16,206 miles. Price: £20,985, £990 more than this car. Dealer: IM Car Supermarket in Dunstable. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2021-f5f509a46c06