2020 Audi A6 Avant 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 2.0 TFSI 45 S Line S tronic 4WD Euro 6 (s/s) 5dr (242 bhp)
• Year: 2020
• Mileage: 70,261 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 242 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 154 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A6 Avant S Line has covered 70,261 miles, around 3,000 fewer miles than is typical for its age. Its asking price of £18,590 is £1,620 below the AskCar estimate of £20,210. The AskCar estimate uses 774 UK dealer adverts for the Audi A6 Avant, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 21 days ago, the asking price has dropped by £83. We checked its advertised mileage against the government's MOT record, and they match. The seller is Carsa Bolton, based in Bolton. 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

Good value: £1,620 (8%) under the AskCar estimate of £20,210.

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 774 priced Audi A6 Avant adverts across different ages and specifications, as of 4 November 2026.

A 2020 Audi A6 Avant with the 2.0 petrol engine is typically advertised at £18,500: the median of the 33 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2020 Audi A6 Avant has been on sale for at least 21 days.

Price history

AskCar first saw this advert on 14 October 2026 at £18,673. Its asking price is now £18,590, £83 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 14 October 2026: £18,673
• 16 October 2026: £18,824
• 18 October 2026: £18,845
• 24 October 2026: £18,590

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 15 February 2027.

It has had 4 MOTs. The latest, on 13 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 62,864 miles, which matches the advertised 70,261 miles.

Advertised mileage is about 3,000 miles lower than the median mileage of a 2020 Audi A6 Avant on AskCar.

Similar cars

1 other 2020 Audi A6 Avant S Line 2.0 petrol automatic estate is for sale at UK dealers, as of 4 November 2026.

The closest to this car in mileage:

• 2020 Audi A6 Avant S Line, 2.0 petrol estate, black. Mileage: 78,000 miles. Price: £18,490, £100 less than this car. Dealer: German Motors in Leeds. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2020-93c53ac75a5b