2015 Audi A6 Avant

3.0 TDI S Line S tronic 4WD Euro 6 5dr (268 bhp)

£18,995

Fair price: within 8% of the typical £19,757 for this model, age and mileage, drawing on 780 adverts of this make and model.

Overview

Make: Audi
Model: A6 Avant
Trim: S LINE
Version: 3.0 TDI S Line S tronic 4WD Euro 6 5dr (268 bhp)
Mileage: 25,000 miles
Year: 2015
Fuel type: Diesel
Body type: Estate
Engine: 3.0 L
Gearbox: Automatic
Power: 268 bhp
Seats: 5
CO2: 138 g/km
Colour: White
Doors: 5
Driven wheels: Four Wheel Drive
Gearbox version: S tronic
Emissions standard: Euro 6

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 £762 below our estimate of £19,757. We use UK dealer asking prices, including 780 Audi A6 Avant listings, and account for the car’s age, mileage and specification. It first appeared in our advert records 8 days ago. Its recorded MOT is valid until 19 July 2027, and its advertised mileage is consistent with the latest MOT reading. It is for sale at Concordia Car Sales in Harlow.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price history

First seen on 12 October 2026, 8 days ago. Advert duration calculated on 20 October 2026.

Recorded asking prices
Date observed	Asking price
12 October 2026	£18,995
19 October 2026	£18,995

Price and mileage comparison

Estimated market asking price: £19,757. The asking price is £762 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 780 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 66,100 miles lower than typical for a 2015 Audi A6 Avant.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 19 July 2027. 24,031 miles at the last test.

16 other cars with the same year, trim, gearbox and fuel are for sale from £7,990 to £18,000.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£7,990	156,937 miles
£8,195	115,649 miles
£8,495	132,090 miles
£9,390	108,000 miles
£9,495	101,000 miles

These cars have covered 43,728–156,937 miles, compared with 25,000 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all Audi A6 Avant cars for sale · 2015 Audi A6 Avant price guide

Dealer

Concordia Car Sales, Harlow. Across the dealer network: 13 cars for sale.

Dealer postcode: CM20 2JD.