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: 76,315 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 76,315 miles on the clock, this 2018 Audi A6 Saloon S Line has done roughly 6,800 more miles than a typical 2018 Audi A6 Saloon. Its asking price of £16,945 is £632 below the AskCar estimate of £17,577. To work out the AskCar estimate, we analyse UK dealer adverts for 858 Audi A6 Saloon cars across different ages and specifications. We first saw this car advertised 158 days ago. Its asking price has since fallen by £1,300. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Junction 17 Cars Limited t/a Junction 17 Cars (Grantham), based in Grantham. 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: £632 (3%) under the AskCar estimate of £17,577.

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 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £18,245. Its asking price is now £16,945, £1,300 less. The latest price cut was seen on 29 August 2026.

Price changes recorded:

• 28 May 2026: £18,245
• 4 June 2026: £17,975
• 16 June 2026: £17,775
• 19 June 2026: £17,745
• 25 June 2026: £17,725
• 16 July 2026: £17,475
• 25 July 2026: £17,445
• 9 August 2026: £17,275
• 13 August 2026: £17,175
• 21 August 2026: £16,975
• 29 August 2026: £16,945

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 24 March 2027.

It has had 5 MOTs. The latest, on 25 March 2026, passed.

Advisories at the latest test: tyre worn close to legal limit/worn on edge ALL 3MM AND WORN ON EDGES.

Mileage at that test: 76,319 miles, which matches the advertised 76,315 miles.

Advertised mileage is about 6,800 miles higher 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: 74,434 miles. Price: £18,999, £2,054 more than this car. Dealer: Webuycarsformore.com in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-ae5dc8b2fffe
• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 80,253 miles. Price: £17,498, £553 more than this car. Dealer: Arnold Clark Ayr Kia in Prestwick. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c5ea96a88e51
• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 91,370 miles. Price: £15,690, £1,255 less than this car. Dealer: SR Motors in Swindon. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-1264248cfbfe

• The nearest: 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, white, 76 miles from this car. Mileage: 60,450 miles. Price: £19,250, £2,305 more than this car. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-b40b1a5fc07c