2020 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: 2020
• Mileage: 47,106 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

This 2020 Audi A6 Saloon S Line is advertised with 47,106 miles, approximately 10,800 below the typical mileage for its age. Its asking price of £19,890 is £372 above the AskCar estimate of £19,518. To work out the AskCar estimate, we analyse UK dealer adverts for 874 Audi A6 Saloon cars across different ages and specifications. We first saw this car advertised 18 days ago. Its asking price has since fallen by £1,100. We checked its advertised mileage against the government's MOT record, and they match. The seller is Stratstone Halesowen Audi, based in Halesowen. 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: £372 (1%) over the AskCar estimate of £19,518.

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

This 2020 Audi A6 Saloon has been on sale for at least 18 days.

Price history

AskCar first saw this advert on 17 October 2026 at £20,990. Its asking price is now £19,890, £1,100 less. The latest price cut was seen on 20 October 2026.

Price changes recorded:

• 17 October 2026: £20,990
• 18 October 2026: £19,990
• 20 October 2026: £19,890

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 25 August 2027.

It has had 5 MOTs. The latest, on 26 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 46,319 miles, which matches the advertised 47,106 miles.

Advertised mileage is about 10,800 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, black. Mileage: 45,420 miles. Price: £14,990, £4,900 less than this car. Dealer: B&T Autos in Rainham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-ca2265063467
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 49,700 miles. Price: £18,490, £1,400 less 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, white. Mileage: 43,500 miles. Price: £19,450, £440 less than this car. Dealer: Swansway Garages Stoke Audi in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-c66427c5db2a

• The nearest: 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey, 17 miles from this car. Mileage: 51,000 miles. Price: £17,988, £1,902 less than this car. Dealer: UP Prestige in Bridgnorth. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-cf761fa44b96