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: 34,000 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: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A6 Saloon S Line is advertised with 34,000 miles, approximately 23,900 below the typical mileage for its age. Priced at £20,450, it is advertised £373 below the AskCar estimate of £20,823. The AskCar estimate uses UK dealer asking prices, including 871 Audi A6 Saloon adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 68 days. Its advertised mileage matches the government's MOT record. The seller is Farlan Automotive, based in Wembley. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £373 (1%) under the AskCar estimate of £20,823.

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 871 priced Audi A6 Saloon adverts across different ages and specifications, as of 5 November 2026.

A 2020 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £18,000: the median of the 58 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2020 Audi A6 Saloon has been on sale for at least 68 days.

Price history

AskCar first saw this advert on 29 August 2026 at £20,450. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 24 June 2027.

It failed its MOT on 22 June 2026 (windscreen damaged but not adversely affecting driver's view; nearside front headlamp lens slightly defective water ingress & damaged; offside front tyre tread depth below requirements of 1.6mm; and 1 more) and passed later the same day.

Advisories at the latest test: windscreen damaged but not adversely affecting driver's view; nearside front headlamp lens slightly defective water ingress & damaged; rear coil spring mounting damaged but not seriously weakened both rear spring lower mounts perishing.

Mileage at that test: 34,040 miles, which matches the advertised 34,000 miles.

Advertised mileage is about 23,900 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 5 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 34,000 miles. Price: £19,950, £500 less 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: 38,780 miles. Price: £18,900, £1,550 less than this car. Dealer: Motor Match Stockport in Stockport. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-959980fd3a45
• 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 28,000 miles. Price: £21,999, £1,549 more than this car. Dealer: AB Car Sales in Gunnislake. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-d5fd3b2284e4

• The nearest: 2020 Audi A6 Saloon S Line, 2.0 diesel saloon, black, 23 miles from this car. Mileage: 45,420 miles. Price: £14,990, £5,460 less than this car. Dealer: B&T Autos in Rainham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2020-ca2265063467