2018 Audi A6 Avant 1.8 TFSI S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 1.8 TFSI S Line S tronic FWD Euro 6 5dr (187 bhp)
• Year: 2018
• Mileage: 38,406 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 1.8 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Silver
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 38,406 miles, this 2018 Audi A6 Avant S Line has covered about 44,500 fewer miles than other 2018 Audi A6 Avant cars. Priced at £15,490, it is advertised £1,195 below the AskCar estimate of £16,685. The AskCar estimate uses UK dealer asking prices, including 778 Audi A6 Avant adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 46 days ago. Its asking price has since fallen by £1,000. The government's MOT record matches its advertised mileage. It is advertised by Highlanders GB in Coventry. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,195 (7%) under the AskCar estimate of £16,685.

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 778 priced Audi A6 Avant adverts across different ages and specifications, as of 2 November 2026.

A 2018 Audi A6 Avant with the 1.8 petrol engine is typically advertised at £13,900: the median of the 10 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A6 Avant has been on sale for at least 46 days.

Price history

AskCar first saw this advert on 17 September 2026 at £16,490. Its asking price is now £15,490, £1,000 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 17 September 2026: £16,490
• 13 October 2026: £15,990
• 29 October 2026: £15,490

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 5 July 2027.

It has had 6 MOTs. The latest, on 30 June 2026, passed.

Advisories at the latest test: exhaust mounting defective middle exhaust sleeve clamp.

Mileage at that test: 37,842 miles, which matches the advertised 38,406 miles.

Advertised mileage is about 44,500 miles lower than the median mileage of a 2018 Audi A6 Avant on AskCar.

Similar cars

4 other 2018 Audi A6 Avant S Line 1.8 petrol automatic estates are for sale at UK dealers, from £12,900 to £14,450, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Avant S Line, 1.8 petrol estate, black. Mileage: 47,345 miles. Price: £14,450, £1,040 less than this car. Dealer: Kayan Motors in Ealing. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-49851aa04ca2
• 2018 Audi A6 Avant S Line, 1.8 petrol estate, white. Mileage: 61,000 miles. Price: £13,990, £1,500 less than this car. Dealer: SR Motor Company in Hillington. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-79b9a861797a
• 2018 Audi A6 Avant S Line, 1.8 petrol estate, black. Mileage: 69,549 miles. Price: £12,900, £2,590 less than this car. Dealer: Perry Road Autos in Tiptree. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-256288123bf3

• The nearest: 2018 Audi A6 Avant S Line, 1.8 petrol estate, grey, 25 miles from this car. Mileage: 70,500 miles. Price: £13,190, £2,300 less than this car. Dealer: Carnet Midlands in Burntwood. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-350e71efd091