2018 Audi A6 Saloon 3.0 TDI V6 S Line

Overview

• Make: Audi
• Model: A6 Saloon
• Trim: S Line
• Version: 3.0 TDI V6 50 S Line Tiptronic 4WD Euro 6 (s/s) 4dr (282 bhp)
• Year: 2018
• Mileage: 34,714 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: White
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A6 Saloon S Line has covered 34,714 miles, around 34,800 fewer miles than is typical for its age. Priced at £21,998, it is advertised £374 below the AskCar estimate of £22,372. To work out the AskCar estimate, we analyse UK dealer adverts for 858 Audi A6 Saloon cars across different ages and specifications. The asking price is now £1,000 lower than when we first recorded the advert 58 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Arnold Clark Linwood Volkswagen, based in Linwood. 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: £374 (1%) under the AskCar estimate of £22,372.

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 3.0 diesel engine is typically advertised at £17,500: the median of the 13 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A6 Saloon has been on sale for at least 58 days.

Price history

AskCar first saw this advert on 5 September 2026 at £22,998. Its asking price is now £21,998, £1,000 less. The latest price cut was seen on 8 October 2026.

Price changes recorded:

• 5 September 2026: £22,998
• 8 October 2026: £21,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 31 August 2027.

It has had 7 MOTs. The latest, on 1 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 34,714 miles, which matches the advertised 34,714 miles.

Advertised mileage is about 34,800 miles lower than the median mileage of a 2018 Audi A6 Saloon on AskCar.

Similar cars

10 other 2018 Audi A6 Saloon S Line 3.0 diesel automatic saloons are for sale at UK dealers, from £11,490 to £19,250, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, white. Mileage: 60,450 miles. Price: £19,250, £2,748 less than this car. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-b40b1a5fc07c
• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 60,772 miles. Price: £18,995, £3,003 less than this car. Dealer: Top Gear Harrow in Harrow. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c789392b21e0
• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 61,000 miles. Price: £18,540, £3,458 less than this car. Dealer: Smart Wheel Motors in Uxbridge. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-13bc2ab6554a

• The nearest: 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black, 26 miles from this car. Mileage: 80,253 miles. Price: £17,498, £4,500 less than this car. Dealer: Arnold Clark Ayr Kia in Prestwick. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c5ea96a88e51