2018 Audi A6 Avant 2.0 TDI ultra S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 2.0 TDI ultra S Line S tronic FWD Euro 6 (s/s) 5dr (187 bhp)
• Year: 2018
• Mileage: 57,753 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 115 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 57,753 miles, this 2018 Audi A6 Avant S Line has covered about 26,000 fewer miles than other 2018 Audi A6 Avant cars. Its asking price of £16,299 is £465 below the AskCar estimate of £16,764. The AskCar estimate draws on 783 Audi A6 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 37 days ago. Its asking price has since fallen by £700. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Pinetree Car Superstore - Tonypandy, based in Tonypandy. 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: £465 (2%) under the AskCar estimate of £16,764.

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

A 2018 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £14,600: the median of the 48 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2018 Audi A6 Avant has been on sale for at least 37 days.

Price history

AskCar first saw this advert on 30 September 2026 at £16,999. Its asking price is now £16,299, £700 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 30 September 2026: £16,999
• 10 October 2026: £16,499
• 29 October 2026: £16,299

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 29 June 2027.

It has had 6 MOTs. The latest, on 1 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 55,718 miles, which matches the advertised 57,753 miles.

Advertised mileage is about 26,000 miles lower than the median mileage of a 2018 Audi A6 Avant on AskCar.

Similar cars

14 other 2018 Audi A6 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £9,950 to £20,299, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 57,241 miles. Price: £17,999, £1,700 more than this car. Dealer: GH Car Sales in Morpeth. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-00aad5f77efa
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, blue. Mileage: 56,707 miles. Price: £18,250, £1,951 more than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-34fb5f039233
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, blue. Mileage: 67,000 miles. Price: £14,990, £1,309 less than this car. Dealer: Six Ways Car Sales in Swansea. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-1fe7a9610350