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: 74,434 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

At 74,434 miles, this 2018 Audi A6 Saloon S Line has covered about 4,900 more miles than other 2018 Audi A6 Saloon cars. Priced at £18,999, it is advertised £1,193 above the AskCar estimate of £17,806. The AskCar estimate uses 858 UK dealer adverts for the Audi A6 Saloon, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 114 days ago. Its asking price has since fallen by £4,000. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Webuycarsformore.com in Newcastle Upon Tyne. 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: £1,193 (6%) over the AskCar estimate of £17,806.

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 114 days.

Price history

AskCar first saw this advert on 11 July 2026 at £22,999. Its asking price is now £18,999, £4,000 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 12 July 2026: £22,999
• 13 July 2026: £21,999
• 2 September 2026: £24,999
• 8 September 2026: £21,999
• 19 September 2026: £20,999
• 23 September 2026: £19,999
• 25 September 2026: £22,999
• 1 October 2026: £21,999
• 17 October 2026: £20,999
• 20 October 2026: £19,999
• 27 October 2026: £18,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 25 June 2027.

It has had 7 MOTs. The latest, on 26 June 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge 2mm; offside rear tyre worn close to legal limit/worn on edge 3mm.

Mileage at that test: 73,152 miles, which matches the advertised 74,434 miles.

Advertised mileage is about 4,900 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, grey. Mileage: 76,315 miles. Price: £16,945, £2,054 less than this car. Dealer: Junction 17 Cars Limited t/a Junction 17 Cars (Grantham) in Grantham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-41c7d85f2e86
• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 80,253 miles. Price: £17,498, £1,501 less 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: 61,000 miles. Price: £18,540, £459 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, 58 miles from this car. Mileage: 116,650 miles. Price: £13,990, £5,009 less than this car. Dealer: Harvey Cooper Cars in Ripon. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-6fc4b430171b