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: 61,000 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 61,000 miles on the clock, this 2018 Audi A6 Saloon S Line has done roughly 8,500 fewer miles than a typical 2018 Audi A6 Saloon. Its asking price of £18,540 is £988 below the AskCar estimate of £19,528. The AskCar estimate draws on 858 Audi A6 Saloon adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 78 days. Its advertised mileage matches the government's MOT record. The seller is Smart Wheel Motors, based in Uxbridge. 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: £988 (5%) under the AskCar estimate of £19,528.

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 78 days.

Price history

AskCar first saw this advert on 16 August 2026 at £17,140. Its asking price is now £18,540, £1,400 more.

Price changes recorded:

• 16 August 2026: £17,140
• 25 August 2026: £20,540
• 4 September 2026: £18,540

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 16 March 2027.

It has had 7 MOTs. The latest, on 17 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 57,949 miles, which matches the advertised 61,000 miles.

Advertised mileage is about 8,500 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 £21,998, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 60,772 miles. Price: £18,995, £455 more 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, white. Mileage: 60,450 miles. Price: £19,250, £710 more 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: 74,434 miles. Price: £18,999, £459 more than this car. Dealer: Webuycarsformore.com in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-ae5dc8b2fffe