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: 55,712 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 55,712 miles on the clock. The dealer is asking £17,970, which is £677 below the AskCar estimate of £18,647. To work out the AskCar estimate, we analyse UK dealer adverts for 875 Audi A6 Saloon cars across different ages and specifications. We first saw this car advertised 97 days ago. Its asking price has since fallen by £1,800. We checked its advertised mileage against the government's MOT record, and they match. The seller is Dace Specialist Car Centre Manchester - Trading Standards Approved, based in Manchester. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £677 (3%) under the AskCar estimate of £18,647.

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 875 priced Audi A6 Saloon adverts across different ages and specifications, as of 6 November 2026.

A 2020 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £18,000: the median of the 61 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2020 Audi A6 Saloon has been on sale for at least 97 days.

Price history

AskCar first saw this advert on 1 August 2026 at £19,770. Its asking price is now £17,970, £1,800 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 1 August 2026: £19,770
• 20 August 2026: £19,470
• 6 October 2026: £19,270
• 16 October 2026: £18,960
• 22 October 2026: £18,440
• 5 November 2026: £17,970

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 19 March 2027.

It has had 4 MOTs. The latest, on 18 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 52,477 miles, which matches the advertised 55,712 miles.

Advertised mileage is about 1,600 miles lower than the median mileage of a 2020 Audi A6 Saloon on AskCar.

Similar cars

19 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 6 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 55,000 miles. Price: £19,495, £1,525 more than this car. Dealer: SD Vehicles in Nuneaton. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-9ddb5ce985e9
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 56,690 miles. Price: £18,089, £119 more than this car. Dealer: cinch in Royal Tunbridge Wells. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-12a72e4d117e
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 57,881 miles. Price: £18,295, £325 more than this car. Dealer: Cars2 Geely Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-353ca065a3de

• The nearest: 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey, 7 miles from this car. Mileage: 111,302 miles. Price: £13,595, £4,375 less than this car. Dealer: J & S Manchester Car Sales in Manchester. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-59e4419d77e7