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: 57,241 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 57,241 miles, this 2018 Audi A6 Avant S Line has covered about 25,700 fewer miles than other 2018 Audi A6 Avant cars. The AskCar estimate for this car is £19,796. It is priced at £17,999, which is £1,797 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 778 Audi A6 Avant cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 131 days, and its asking price is down £2,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by GH Car Sales in Morpeth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £1,797 (9%) under the AskCar estimate of £19,796.

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 778 priced Audi A6 Avant adverts across different ages and specifications, as of 2 November 2026.

A 2018 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £14,700: the median of the 50 for sale on AskCar, as of 2 November 2026.

Time on sale

The dealer may accept less. This 2018 Audi A6 Avant has been on sale for at least 131 days, and its asking price has been cut by £2,000. About half of 2018 Audi A6 Avant cars are gone from sale within a month of being advertised: 29 of the 58 first advertised between 13 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 24 June 2026 at £19,999. Its asking price is now £17,999, £2,000 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 24 June 2026: £19,999
• 11 July 2026: £18,999
• 14 August 2026: £18,499
• 21 August 2026: £18,699
• 23 August 2026: £18,999
• 18 September 2026: £18,499
• 21 October 2026: £17,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 10 December 2026.

It failed its MOT on 10 December 2025 (nearside rear coil spring fractured or broken) and passed 1 day later, on 11 December 2025.

There were no advisories at the latest test.

Mileage at that test: 53,065 miles, which matches the advertised 57,241 miles.

Advertised mileage is about 25,700 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 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Avant S Line, 2.0 diesel estate, black. Mileage: 57,753 miles. Price: £16,299, £1,700 less than this car. Dealer: Pinetree Car Superstore - Tonypandy in Tonypandy. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-53f1531a325c
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, blue. Mileage: 56,707 miles. Price: £18,250, £251 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, £3,009 less than this car. Dealer: Six Ways Car Sales in Swansea. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-1fe7a9610350

• The nearest: 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey, 104 miles from this car. Mileage: 154,000 miles. Price: £14,995, £3,004 less than this car. Dealer: Enzo Cars & Vans in Blackburn. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-e60feb9e1993