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: 87,865 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

With 87,865 miles on the clock, this 2018 Audi A6 Avant S Line has done roughly 4,200 more miles than a typical 2018 Audi A6 Avant. The dealer is asking £16,995, which is £1,355 below the AskCar estimate of £18,350. To work out the AskCar estimate, we analyse UK dealer adverts for 783 Audi A6 Avant cars across different ages and specifications. Since we first spotted the advert 162 days ago, the asking price has dropped by £4,000. Our records show an MOT expiry date of 29 August 2026, which has passed. Ask the dealer for an update. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Sherwood Car Centre in Nottingham. 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: £1,355 (7%) under the AskCar estimate of £18,350.

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

This 2018 Audi A6 Avant has been on sale for at least 162 days.

Price history

AskCar first saw this advert on 28 May 2026 at £20,995. Its asking price is now £16,995, £4,000 less. The latest price cut was seen on 2 November 2026.

Price changes recorded:

• 28 May 2026: £20,995
• 17 June 2026: £19,995
• 19 June 2026: £21,995
• 20 June 2026: £21,495
• 27 June 2026: £21,995
• 2 July 2026: £21,499
• 9 July 2026: £20,995
• 19 July 2026: £20,495
• 20 July 2026: £20,995
• 23 July 2026: £19,995
• 26 July 2026: £20,995
• 3 August 2026: £21,995
• 6 August 2026: £20,999
• 8 August 2026: £19,995
• 19 August 2026: £20,995
• 23 August 2026: £19,995
• 2 September 2026: £20,995
• 8 September 2026: £20,495
• 22 September 2026: £19,995
• 24 September 2026: £18,995
• 28 September 2026: £19,995
• 4 October 2026: £20,495
• 11 October 2026: £19,995
• 12 October 2026: £18,995
• 22 October 2026: £17,995
• 2 November 2026: £16,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: the latest record we hold ran out on 29 August 2026; ask the dealer for the current MOT.

It has had 5 MOTs. The latest, on 30 July 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 75,961 miles, which matches the advertised 87,865 miles.

Advertised mileage is about 4,200 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: 96,000 miles. Price: £18,890, £1,895 more than this car. Dealer: BM Vehicles in Ware. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-2b14c053512d
• 2018 Audi A6 Avant S Line, 3.0 diesel estate, black. Mileage: 105,007 miles. Price: £16,490, £505 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, £6,495 more than this car. Dealer: Cheshire Performance in Audenshaw. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-26ee58b2e456