2018 Audi A6 Avant 2.0 TDI S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 2.0 TDI S Line S tronic 4WD Euro 6 (s/s) 5dr (187 bhp)
• Year: 2018
• Mileage: 72,748 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 133 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 72,748 miles, this 2018 Audi A6 Avant S Line has covered about 10,900 fewer miles than other 2018 Audi A6 Avant cars. The AskCar estimate for this car is £16,232. It is priced at £15,990, which is £242 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 774 Audi A6 Avant cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 66 days. Its advertised mileage matches the government's MOT record. The seller is Brownroyd Motors, based in Heywood. 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: £242 (1%) under the AskCar estimate of £16,232.

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

The dealer may accept less. This 2018 Audi A6 Avant has been on sale for at least 66 days. About half of 2018 Audi A6 Avant cars are gone from sale within a month of being advertised: 33 of the 64 first advertised between 13 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 30 August 2026 at £15,990. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 15 April 2027.

It has had 6 MOTs. The latest, on 9 April 2026, passed.

Advisories at the latest test: nearside front suspension arm pin or bush worn but not resulting in excessive movement rear bush on arm; offside front suspension arm pin or bush worn but not resulting in excessive movement rear bush on arm; nearside front tyre worn close to legal limit/worn on edge; and 1 more.

Mileage at that test: 71,155 miles, which matches the advertised 72,748 miles.

Advertised mileage is about 10,900 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, white. Mileage: 77,000 miles. Price: £16,995, £1,005 more than this car. Dealer: Precision Wheels in Harlow. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-36e3d5251798
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, blue. Mileage: 67,000 miles. Price: £14,990, £1,000 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, black. Mileage: 67,000 miles. Price: £17,995, £2,005 more than this car. Dealer: S.P.V. Automotive in Windlesham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-0a5895aa721f

• The nearest: 2018 Audi A6 Avant S Line, 2.0 diesel estate, white, 5 miles from this car. Mileage: 121,177 miles. Price: £13,995, £1,995 less than this car. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-41093fc03c2b