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: 121,177 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A6 Avant S Line is advertised with 121,177 miles, approximately 38,300 above the typical mileage for its age. The AskCar estimate for this car is £12,540. It is priced at £13,995, which is £1,455 above that estimate. The AskCar estimate uses UK dealer asking prices, including 778 Audi A6 Avant adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 47 days ago. Its asking price has since fallen by £500. The recorded MOT expired on 30 October 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Blackline Motors in Oldham. 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

Above the going rate: £1,455 (11%) over the AskCar estimate of £12,540.

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

This 2018 Audi A6 Avant has been on sale for at least 47 days.

Price history

AskCar first saw this advert on 16 September 2026 at £14,495. Its asking price is now £13,995, £500 less. The latest price cut was seen on 30 September 2026.

Price changes recorded:

• 16 September 2026: £14,495
• 30 September 2026: £13,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 30 October 2026; ask the dealer for the current MOT.

It has had 6 MOTs. The latest, on 24 October 2025, passed.

Advisories at the latest test: offside front lower suspension arm pin or bush worn but not resulting in excessive movement spring control arm inner bush; nearside front lower suspension arm pin or bush worn but not resulting in excessive movement spring control arm inner bush; offside front upper suspension arm pin or bush worn but not resulting in excessive movement rear arm inner bush; and 3 more.

Mileage at that test: 91,515 miles, which matches the advertised 121,177 miles.

Advertised mileage is about 38,300 miles higher 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, red. Mileage: 118,600 miles. Price: £13,749, £246 less than this car. Dealer: Noya Motor Group in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-dcae342b9bab
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 124,000 miles. Price: £9,950, £4,045 less than this car. Dealer: Windmill Motors in Bourne. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-7713e446c241
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 109,358 miles. Price: £10,495, £3,500 less than this car. Dealer: Ideal Car Centre in Bilston. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-f7b5329249bc

• The nearest: 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey, 5 miles from this car. Mileage: 72,748 miles. Price: £15,990, £1,995 more than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-c16c20409f0c