2018 Audi A6 Avant 2.0 TDI S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 2.0 TDI 40 S Line S tronic FWD Euro 6 (s/s) 5dr (201 bhp)
• Year: 2018
• Mileage: 67,000 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 67,000 miles, this 2018 Audi A6 Avant S Line has covered about 16,600 fewer miles than other 2018 Audi A6 Avant cars. The dealer is asking £17,995, which is £371 below the AskCar estimate of £18,366. To work out the AskCar estimate, we analyse UK dealer adverts for 774 Audi A6 Avant cars across different ages and specifications. Since we first spotted the advert 11 days ago, the asking price has dropped by £1,000. The recorded MOT expired on 29 September 2026, so ask the dealer whether it has been renewed. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by S.P.V. Automotive in Windlesham. 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

Fair price: £371 (2%) under the AskCar estimate of £18,366.

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 2018 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £14,700: the median of the 48 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2018 Audi A6 Avant has been on sale for at least 11 days.

Price history

AskCar first saw this advert on 24 October 2026 at £18,995. Its asking price is now £17,995, £1,000 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 24 October 2026: £18,995
• 30 October 2026: £17,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: the latest record we hold ran out on 29 September 2026; ask the dealer for the current MOT.

It has had 6 MOTs. The latest, on 5 September 2025, passed.

Advisories at the latest test: nearside front shock absorbers has light misting of oil.

Mileage at that test: 63,606 miles, which matches the advertised 67,000 miles.

Advertised mileage is about 16,600 miles lower than the median mileage of a 2018 Audi A6 Avant on AskCar.

Similar cars

13 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 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Avant S Line, 2.0 diesel estate, blue. Mileage: 67,000 miles. Price: £14,990, £3,005 less than this car. Dealer: Six Ways Car Sales in Swansea. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-1fe7a9610350
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 72,748 miles. Price: £15,990, £2,005 less than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-c16c20409f0c
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, black. Mileage: 57,753 miles. Price: £16,299, £1,696 less than this car. Dealer: Pinetree Car Superstore - Tonypandy in Tonypandy. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-53f1531a325c

• The nearest: 2018 Audi A6 Avant S Line, 2.0 diesel estate, blue, 28 miles from this car. Mileage: 56,707 miles. Price: £18,250, £255 more than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-34fb5f039233