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: 45,000 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

At 45,000 miles, this 2018 Audi A6 Saloon S Line has covered about 24,500 fewer miles than other 2018 Audi A6 Saloon cars. Its asking price of £15,990 is £1,850 below the AskCar estimate of £17,840. 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 102 days ago. Its asking price has since fallen by £1,960. Our latest MOT record expired on 2 August 2026. Check the current position with the dealer. We checked its advertised mileage against the government's MOT record, and they match. The seller is Car City (Luton), based in Luton. 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

Good value: £1,850 (10%) under the AskCar estimate of £17,840.

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 102 days.

Price history

AskCar first saw this advert on 23 July 2026 at £17,950. Its asking price is now £15,990, £1,960 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 23 July 2026: £17,950
• 6 August 2026: £17,650
• 13 August 2026: £17,550
• 18 August 2026: £17,450
• 2 September 2026: £16,990
• 10 October 2026: £16,950
• 22 October 2026: £16,850
• 24 October 2026: £15,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 2 August 2026; ask the dealer for the current MOT.

It has had 5 MOTs. The latest, on 17 July 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 39,422 miles, which matches the advertised 45,000 miles.

Advertised mileage is about 24,500 miles lower 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: 43,000 miles. Price: £16,989, £999 more than this car. Dealer: Bluehawk Automotive in Hounslow. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-c0547a8266b4
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 48,000 miles. Price: £17,495, £1,505 more than this car. Dealer: R-Line Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-6f610327107d
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 48,428 miles. Price: £16,700, £710 more than this car. Dealer: Marshall Volkswagen Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-538c812a95c7

• The nearest: 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, black, under a mile from this car. Mileage: 49,227 miles. Price: £17,849, £1,859 more than this car. Dealer: TU Motors in Luton. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-5c1118e2ae93