2018 Audi A6 Avant 2.0 TDI S Line
Version: 2.0 TDI 40 S Line S tronic FWD Euro 6 (s/s) 5dr (201 bhp)
Price: £18,250. Good value: £1,605 (8%) under the AskCar estimate of £19,855, our expected asking price for this car from its model, age, mileage and specification, drawing on 763 priced Audi A6 Avant adverts on AskCar as of 30 October 2026.
AskCar lists 779 used Audi A6 Avant from 566 UK dealerships, as of 30 October 2026.
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)
- Mileage
- 56,707 miles
- Year
- 2018
- Fuel type
- Diesel
- Body type
- Estate
- Engine
- 2.0 L
- Gearbox
- Automatic
- Power
- 201 bhp
- Seats
- 5
- CO2
- 124 g/km
- Colour
- Blue
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TDI
- Emissions standard
- Euro 6
About this car
This 2018 Audi A6 Avant S Line has covered 56,707 miles, around 26,200 fewer miles than is typical for its age. The AskCar estimate for this car is £19,855. It is priced at £18,250, which is £1,605 below that estimate. The AskCar estimate uses 763 UK dealer adverts for the Audi A6 Avant, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records today. The latest MOT record shows an expiry date of 27 December 2026, with the advertised mileage consistent with the recorded reading. It is for sale at Car Planet Barnet in New Southgate.
Stock data as of 30 October 2026.
Price history
AskCar first saw this advert on 30 October 2026.
| Date observed | Asking price |
|---|---|
| 30 October 2026 | £18,250 |
Price and mileage comparison
Good value: £1,605 (8%) under the AskCar estimate of £19,855.
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 763 priced Audi A6 Avant adverts across different ages and specifications, as of 30 October 2026.
Advertised mileage is about 26,200 miles lower than the median mileage of a 2018 Audi A6 Avant on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 27 December 2026. 48,509 miles at the last test.
Other matching cars
18 other 2018 Audi A6 Avant S Line automatic diesel cars are for sale at UK dealers from £9,950 to £23,490, as of 30 October 2026.
The 5 cheapest:
- 2018 Audi A6 Avant. Price: £9,950. Mileage: 124,000 miles. Dealer: Windmill Motors in Bourne. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-7713e446c241
- 2018 Audi A6 Avant. Price: £10,495. Mileage: 109,358 miles. Dealer: Ideal Car Centre in Bilston. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-f7b5329249bc
- 2018 Audi A6 Avant. Price: £10,950. Mileage: 108,000 miles. Dealer: Northern Motor House in Shipley. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-a828df2de944
- 2018 Audi A6 Avant. Price: £13,995. Mileage: 121,177 miles. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-41093fc03c2b
- 2018 Audi A6 Avant. Price: £13,995. Mileage: 135,961 miles. Dealer: Motorport in Bedford. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-f99a1b062ea8
The 18 matching cars have covered 46,000 to 154,000 miles, compared with 56,707 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all Audi A6 Avant cars for sale · 2018 Audi A6 Avant price guide
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Photos
1 photo of this car is on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.