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: 38,780 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 38,780 miles on the clock, this 2020 Audi A6 Saloon S Line has done roughly 19,100 fewer miles than a typical 2020 Audi A6 Saloon. Priced at £18,900, it is advertised £1,535 below the AskCar estimate of £20,435. 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 43 days ago. Its asking price has since fallen by £1,095. The government's MOT record matches its advertised mileage. You can find this car at Swansway Garages in Stockport. 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: £1,535 (7%) under the AskCar estimate of £20,435.

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 43 days.

Price history

AskCar first saw this advert on 22 September 2026 at £19,995. Its asking price is now £18,900, £1,095 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 22 September 2026: £19,995
• 2 October 2026: £19,364
• 14 October 2026: £19,360
• 23 October 2026: £18,999
• 27 October 2026: £18,900

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 13 March 2027.

It has had 4 MOTs. The latest, on 20 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 34,436 miles, which matches the advertised 38,780 miles.

Advertised mileage is about 19,100 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, white. Mileage: 43,500 miles. Price: £19,450, £550 more than this car. Dealer: Swansway Garages Stoke Audi in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-c66427c5db2a
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 34,000 miles. Price: £19,950, £1,050 more than this car. Dealer: Westleigh Prestige in Wickford. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-94b6449627b2
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 34,000 miles. Price: £20,450, £1,550 more than this car. Dealer: Farlan Automotive in Wembley. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-43ab3193a800

• The nearest: 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey, 5 miles from this car. Mileage: 111,302 miles. Price: £13,595, £5,305 less than this car. Dealer: J & S Manchester Car Sales in Manchester. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-59e4419d77e7