2018 Audi A6 Saloon 2.0 TDI S Line

Overview

• Make: Audi
• Model: A6 Saloon
• Trim: S Line
• Version: 2.0 TDI 40 S Line S tronic FWD Euro 6 (s/s) 4dr (201 bhp)
• Year: 2018
• Mileage: 24,000 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A6 Saloon S Line has covered 24,000 miles, around 45,500 fewer miles than is typical for its age. Priced at £19,995, it is advertised £261 above the AskCar estimate of £19,734. The AskCar estimate uses UK dealer asking prices, including 858 Audi A6 Saloon adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 144 days ago. Its asking price has since fallen by £1,000. The government's MOT record matches its advertised mileage. It is for sale at OC Davies & Son in Carmarthen. 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: £261 (1%) over the AskCar estimate of £19,734.

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

A 2018 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £14,800: the median of the 52 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A6 Saloon has been on sale for at least 144 days.

Price history

AskCar first saw this advert on 11 June 2026 at £20,995. Its asking price is now £19,995, £1,000 less. The latest price cut was seen on 8 August 2026.

Price changes recorded:

• 10 July 2026: £20,995
• 8 August 2026: £19,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 10 May 2027.

It has had 6 MOTs. The latest, on 11 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 20,523 miles, which matches the advertised 24,000 miles.

Advertised mileage is about 45,500 miles lower than the median mileage of a 2018 Audi A6 Saloon on AskCar.

Similar cars

29 other 2018 Audi A6 Saloon S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £7,995 to £21,250, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon. Mileage: 24,000 miles. Price: £19,995, the same price as this car. Dealer: Southern Prestige Cars in Crawley. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-8b28290de3ca
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, blue. Mileage: 34,280 miles. Price: £16,995, £3,000 less than this car. Dealer: Days Motorpark in Swansea. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-d877339d0d0f
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 12,900 miles. Price: £21,250, £1,255 more than this car. Dealer: Group 1 Automotive Cheshire Oaks Audi in Ellesmere Port. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-10b44af84f3d