2015 Audi A6 Avant 3.0 S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 3.0 TDI S Line S tronic 4WD Euro 6 5dr (268 bhp)
• Year: 2015
• Mileage: 25,000 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 3.0 litres, 268 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: White
• CO2: 138 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2015 Audi A6 Avant S Line is advertised with 25,000 miles, approximately 66,100 below the typical mileage for its age. Its asking price of £18,995 is £381 below the AskCar estimate of £19,376. The AskCar estimate uses UK dealer asking prices, including 785 Audi A6 Avant adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 24 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Concordia Car Sales in Harlow. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £381 (1%) under the AskCar estimate of £19,376.

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 785 priced Audi A6 Avant adverts across different ages and specifications, as of 5 November 2026.

A 2015 Audi A6 Avant with the 3.0 diesel engine is typically advertised at £14,000: the median of the 15 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2015 Audi A6 Avant has been on sale for at least 24 days.

Price history

AskCar first saw this advert on 12 October 2026 at £18,995. 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 5 November 2026: valid until 19 July 2027.

It has had 10 MOTs. The latest, on 10 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 24,031 miles, which matches the advertised 25,000 miles.

Advertised mileage is about 66,100 miles lower than the median mileage of a 2015 Audi A6 Avant on AskCar.

Similar cars

4 other 2015 Audi A6 Avant S Line 3.0 diesel automatic estates are for sale at UK dealers, from £10,990 to £18,000, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2015 Audi A6 Avant S Line, 3.0 diesel estate, blue. Mileage: 50,000 miles. Price: £18,000, £995 less than this car. Dealer: Radley Motor Company in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2015-fdb9a4212ef3
• 2015 Audi A6 Avant S Line, 3.0 diesel estate. Mileage: 61,941 miles. Price: £16,495, £2,500 less than this car. Dealer: Billzo Motors in Manchester. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2015-09485a905ce9
• 2015 Audi A6 Avant S Line, 3.0 diesel estate, grey. Mileage: 90,262 miles. Price: £12,499, £6,496 less than this car. Dealer: Basford Motors in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2015-3b12aa6cd37d

• The nearest: 2015 Audi A6 Avant S Line, 3.0 diesel estate, blue, 17 miles from this car. Mileage: 114,000 miles. Price: £10,990, £8,005 less than this car. Dealer: Best4U Motors in Brentwood. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2015-e68770393dc3