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: 49,700 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

With 49,700 miles on the clock, this 2020 Audi A6 Saloon S Line has done roughly 8,200 fewer miles than a typical 2020 Audi A6 Saloon. The AskCar estimate for this car is £19,329. It is priced at £18,490, which is £839 below that estimate. 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 160 days, and its asking price is down £1,500. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at S James Prestige in Stamford. 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: £839 (4%) under the AskCar estimate of £19,329.

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 160 days, and its asking price has been cut by £1,500. 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 28 May 2026 at £19,990. Its asking price is now £18,490, £1,500 less. The latest price cut was seen on 30 September 2026.

Price changes recorded:

• 29 May 2026: £19,990
• 16 June 2026: £19,980
• 14 July 2026: £19,490
• 19 August 2026: £18,990
• 30 September 2026: £18,490

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 20 March 2027.

It failed its MOT on 11 March 2026 (nearside rear tyre tread depth below requirements of 1.6mm; front windscreen wiper blade defective wipers are starting to leave streaks on screen; nearside front windscreen damaged but not adversely affecting driver's view screen is cracked) and passed 8 days later, on 19 March 2026.

Advisories at the latest test: offside front suspension arm pin or bush worn but not resulting in excessive movement bent arm bush is starting to tear.

Mileage at that test: 48,526 miles, which matches the advertised 49,700 miles.

Advertised mileage is about 8,200 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: 51,000 miles. Price: £17,988, £502 less than this car. Dealer: UP Prestige in Bridgnorth. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-cf761fa44b96
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 47,106 miles. Price: £19,890, £1,400 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, black. Mileage: 45,420 miles. Price: £14,990, £3,500 less than this car. Dealer: B&T Autos in Rainham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-ca2265063467

• The nearest: 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, white, 43 miles from this car. Mileage: 55,000 miles. Price: £19,495, £1,005 more than this car. Dealer: SD Vehicles in Nuneaton. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-9ddb5ce985e9