2020 Audi A6 Saloon 2.0 TDI S Line

Overview

• Make: Audi
• Model: A6 Saloon
• Trim: S Line
• Version: 2.0 TDI 40 S Line S tronic FWD Euro 6 (s/s) 4dr (201 bhp)
• Year: 2020
• Mileage: 51,000 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: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 51,000 miles, this 2020 Audi A6 Saloon S Line has covered about 6,900 fewer miles than other 2020 Audi A6 Saloon cars. The dealer is asking £17,988, which is £1,214 below the AskCar estimate of £19,202. To work out the AskCar estimate, we analyse UK dealer adverts for 874 Audi A6 Saloon cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 82 days, and its asking price is down £500. Its advertised mileage matches the government's MOT record. You can find this car at UP Prestige in Bridgnorth. 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: £1,214 (6%) under the AskCar estimate of £19,202.

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 2020 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £18,000: the median of the 56 for sale on AskCar, as of 4 November 2026.

Time on sale

The dealer may accept less. This 2020 Audi A6 Saloon has been on sale for at least 82 days, and its asking price has been cut by £500. About half of 2020 Audi A6 Saloon cars are gone from sale within a month of being advertised: 32 of the 63 first advertised between 7 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 14 August 2026 at £18,488. Its asking price is now £17,988, £500 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 14 August 2026: £18,488
• 11 September 2026: £18,248
• 14 September 2026: £17,998
• 19 September 2026: £17,988
• 4 October 2026: £18,488
• 14 October 2026: £18,248
• 19 October 2026: £17,998
• 22 October 2026: £17,988

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 12 April 2027.

It failed its MOT on 11 April 2026 (front windscreen washer not working) and passed 2 days later, on 13 April 2026.

There were no advisories at the latest test.

Mileage at that test: 49,981 miles, which matches the advertised 51,000 miles.

Advertised mileage is about 6,900 miles lower than the median mileage of a 2020 Audi A6 Saloon on AskCar.

Similar cars

17 other 2020 Audi A6 Saloon S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £13,595 to £21,999, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 49,700 miles. Price: £18,490, £502 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-0b86dec653a6
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 47,106 miles. Price: £19,890, £1,902 more than this car. Dealer: Stratstone Halesowen Audi in Halesowen. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-949f411cd867
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 55,000 miles. Price: £19,495, £1,507 more than this car. Dealer: SD Vehicles in Nuneaton. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-9ddb5ce985e9