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: 120,515 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A6 Saloon S Line has covered 120,515 miles, around 51,000 more miles than is typical for its age. The AskCar estimate for this car is £11,017. It is priced at £12,990, which is £1,973 above that estimate. The AskCar estimate uses UK dealer asking prices, including 858 Audi A6 Saloon adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 135 days ago. Its asking price has since fallen by £1,000. The government's MOT record matches its advertised mileage. You can find this car at Autohaven Motors in High Wycombe. 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

Above the going rate: £1,973 (17%) over the AskCar estimate of £11,017.

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 135 days.

Price history

AskCar first saw this advert on 20 June 2026 at £13,990. Its asking price is now £12,990, £1,000 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 20 June 2026: £13,990
• 30 August 2026: £13,800
• 23 September 2026: £13,500
• 6 October 2026: £13,290
• 29 October 2026: £12,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 29 December 2026.

It has had 5 MOTs. The latest, on 8 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 115,552 miles, which matches the advertised 120,515 miles.

Advertised mileage is about 51,000 miles higher 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: 121,258 miles. Price: £11,995, £995 less than this car. Dealer: Carzy in Manchester. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-0edc5e86d7a0
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, grey. Mileage: 115,000 miles. Price: £7,995, £4,995 less than this car. Dealer: Driveaway N11 in London. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-72d353d57b7b
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 98,000 miles. Price: £12,995, the same price as this car. Dealer: Kennedy Cars in Bargeddie. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-6287ca86409d

• The nearest: 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, grey, 16 miles from this car. Mileage: 43,000 miles. Price: £16,989, £3,999 more than this car. Dealer: Bluehawk Automotive in Hounslow. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c0547a8266b4