2018 Audi A6 Avant 3.0 TDI V6 S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 3.0 TDI V6 50 S Line Tiptronic 4WD Euro 6 (s/s) 5dr (282 bhp)
• Year: 2018
• Mileage: 96,000 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 96,000 miles, this 2018 Audi A6 Avant S Line has covered about 12,300 more miles than other 2018 Audi A6 Avant cars. The dealer is asking £18,890, which is £1,605 above the AskCar estimate of £17,285. To work out the AskCar estimate, we analyse UK dealer adverts for 783 Audi A6 Avant cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 162 days, and its asking price has been cut by £1,105. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by BM Vehicles in Ware. 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

Above the going rate: £1,605 (9%) over the AskCar estimate of £17,285.

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 3.0 diesel engine is typically advertised at £18,600: the median of the 11 for sale on AskCar, as of 6 November 2026.

Time on sale

The dealer may accept less. This 2018 Audi A6 Avant has been on sale for at least 162 days, and its asking price has been cut by £1,105. About half of 2018 Audi A6 Avant cars are gone from sale within a month of being advertised: 36 of the 68 first advertised between 13 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 28 May 2026 at £19,995. Its asking price is now £18,890, £1,105 less. The latest price cut was seen on 24 September 2026.

Price changes recorded:

• 28 May 2026: £19,995
• 25 August 2026: £18,995
• 24 September 2026: £18,890

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 24 February 2027.

It has had 8 MOTs. The latest, on 25 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 95,665 miles, which matches the advertised 96,000 miles.

Advertised mileage is about 12,300 miles higher than the median mileage of a 2018 Audi A6 Avant on AskCar.

Similar cars

5 other 2018 Audi A6 Avant S Line 3.0 diesel automatic estates are for sale at UK dealers, from £13,625 to £23,490, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Avant S Line, 3.0 diesel estate, black. Mileage: 87,865 miles. Price: £16,995, £1,895 less than this car. Dealer: Sherwood Car Centre in Nottingham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-ed774443d6af
• 2018 Audi A6 Avant S Line, 3.0 diesel estate, black. Mileage: 105,007 miles. Price: £16,490, £2,400 less than this car. Dealer: Group 1 Assured Ipswich in Ipswich. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-c354b8f60100
• 2018 Audi A6 Avant S Line, 3.0 diesel estate, grey. Mileage: 62,000 miles. Price: £23,490, £4,600 more than this car. Dealer: Cheshire Performance in Audenshaw. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-26ee58b2e456

• The nearest: 2018 Audi A6 Avant S Line, 3.0 diesel estate, blue, 20 miles from this car. Mileage: 58,050 miles. Price: £20,700, £1,810 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-ee3a3c1edb9e