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: 34,280 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 34,280 miles on the clock, this 2018 Audi A6 Saloon S Line has done roughly 35,200 fewer miles than a typical 2018 Audi A6 Saloon. The AskCar estimate for this car is £18,843. It is priced at £16,995, which is £1,848 below that estimate. The AskCar estimate draws on 858 Audi A6 Saloon adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 143 days ago, and its asking price has since fallen by £3,000. Its advertised mileage matches the government's MOT record. You can find this car at Days Motorpark in Swansea. 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

Good value: £1,848 (9%) under the AskCar estimate of £18,843.

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 143 days.

Price history

AskCar first saw this advert on 12 June 2026 at £19,995. Its asking price is now £16,995, £3,000 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 7 July 2026: £19,995
• 15 August 2026: £19,495
• 12 September 2026: £18,495
• 21 October 2026: £17,995
• 30 October 2026: £17,795
• 31 October 2026: £16,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 15 June 2027.

It has had 7 MOTs. The latest, on 20 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 34,275 miles, which matches the advertised 34,280 miles.

Advertised mileage is about 35,200 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, grey. Mileage: 43,000 miles. Price: £16,989, the same price as this car. Dealer: Bluehawk Automotive in Hounslow. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c0547a8266b4
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon. Mileage: 24,000 miles. Price: £19,995, £3,000 more than 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, grey. Mileage: 24,000 miles. Price: £19,995, £3,000 more than this car. Dealer: OC Davies & Son in Carmarthen. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-cb889198766a