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: 70,500 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 1.8 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 70,500 miles on the clock, this 2018 Audi A6 Avant S Line has done roughly 12,400 fewer miles than a typical 2018 Audi A6 Avant. Its asking price of £13,190 is £486 below the AskCar estimate of £13,676. The AskCar estimate draws on 778 Audi A6 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 16 days ago. Its advertised mileage matches the government's MOT record. The seller is Carnet Midlands, based in Burntwood. 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: £486 (3%) under the AskCar estimate of £13,676.

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 16 days.

Price history

AskCar first saw this advert on 17 October 2026 at £13,190. 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 2 November 2026: valid until 28 June 2027.

It failed its MOT on 19 June 2026 (windscreen damaged but not adversely affecting driver's view; nearside rear tyre has a bulge, caused by separation or partial failure of its structure; nearside rear tyre has ply or cords exposed cut in inner tyre wall) and passed later the same day.

Advisories at the latest test: windscreen damaged but not adversely affecting driver's view; nearside rear road wheel slightly distorted.

Mileage at that test: 66,045 miles, which matches the advertised 70,500 miles.

Advertised mileage is about 12,400 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 £15,490, 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: 69,549 miles. Price: £12,900, £290 less than this car. Dealer: Perry Road Autos in Tiptree. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-256288123bf3
• 2018 Audi A6 Avant S Line, 1.8 petrol estate, white. Mileage: 61,000 miles. Price: £13,990, £800 more 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: 47,345 miles. Price: £14,450, £1,260 more than this car. Dealer: Kayan Motors in Ealing. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-49851aa04ca2

• The nearest: 2018 Audi A6 Avant S Line, 1.8 petrol estate, silver, 25 miles from this car. Mileage: 38,406 miles. Price: £15,490, £2,300 more than this car. Dealer: Highlanders GB in Coventry. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-0aceb85f7424