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: 56,690 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 has covered 56,690 miles. The dealer is asking £18,089, which is £499 below the AskCar estimate of £18,588. To work out the AskCar estimate, we analyse UK dealer adverts for 874 Audi A6 Saloon cars across different ages and specifications. We first recorded this advert 43 days ago, and its asking price has since fallen by £1,410. Its advertised mileage matches the government's MOT record. It is advertised by cinch in Tunbridge Wells. 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: £499 (2%) under the AskCar estimate of £18,588.

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 £19,499. Its asking price is now £18,089, £1,410 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 22 September 2026: £19,499
• 23 September 2026: £19,299
• 1 October 2026: £18,899
• 9 October 2026: £18,799
• 25 October 2026: £18,389
• 1 November 2026: £18,089

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 30 July 2027.

It has had 4 MOTs. The latest, on 1 July 2026, passed.

Advisories at the latest test: offside rear nail in tyre; TPMs illuminated.

Mileage at that test: 54,959 miles, which matches the advertised 56,690 miles.

Advertised mileage is about 1,200 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: 55,712 miles. Price: £18,440, £351 more than this car. Dealer: Dace Specialist Car Centre Manchester - Trading Standards Approved in Manchester. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-5b8c11767928
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 57,881 miles. Price: £18,295, £206 more than this car. Dealer: Cars2 Geely Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-353ca065a3de
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 55,000 miles. Price: £19,495, £1,406 more than this car. Dealer: SD Vehicles in Nuneaton. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-9ddb5ce985e9

• The nearest: 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, black, 24 miles from this car. Mileage: 45,420 miles. Price: £14,990, £3,099 less than this car. Dealer: B&T Autos in Rainham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-ca2265063467