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: 64,594 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

With 64,594 miles on the clock, this 2018 Audi A6 Avant S Line has done roughly 19,200 fewer miles than a typical 2018 Audi A6 Avant. The AskCar estimate for this car is £18,718. It is priced at £17,500, which is £1,218 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 779 Audi A6 Avant cars across different ages and specifications. This car was first seen in our listings data today. We checked its advertised mileage against the government's MOT record, and they match. The seller is Sytner Group CUPRA North Wales, based in Llandudno Junction. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,218 (6%) under the AskCar estimate of £18,718.

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 779 priced Audi A6 Avant adverts across different ages and specifications, as of 10 November 2026.

A 2018 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £14,200: the median of the 49 for sale on AskCar, as of 10 November 2026.

Time on sale

AskCar first saw this 2018 Audi A6 Avant advertised today. About half of 2018 Audi A6 Avant cars are gone from sale within a month of being advertised: 38 of the 74 first advertised between 13 July 2026 and 7 October 2026.

Price history

AskCar first saw this advert on 10 November 2026 at £17,500. 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 10 November 2026: valid until 6 September 2027.

It has had 6 MOTs. The latest, on 7 September 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge 2.3mm; offside front tyre worn close to legal limit/worn on edge 2.2mm.

Mileage at that test: 63,684 miles, which matches the advertised 64,594 miles.

Advertised mileage is about 19,200 miles lower than the median mileage of a 2018 Audi A6 Avant on AskCar.

Similar cars

15 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 10 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, £2,510 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: £17,495, the same price as this car. Dealer: S.P.V. Automotive in Windlesham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-0a5895aa721f
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, black. Mileage: 57,753 miles. Price: £16,299, £1,201 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, grey, 62 miles from this car. Mileage: 154,000 miles. Price: £14,995, £2,505 less than this car. Dealer: Enzo Cars & Vans in Blackburn. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-e60feb9e1993