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: 49,077 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 49,077 miles on the clock, this 2018 Audi A6 Saloon S Line has done roughly 18,600 fewer miles than a typical 2018 Audi A6 Saloon. The AskCar estimate for this car is £17,472. It is priced at £16,400, which is £1,072 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 873 Audi A6 Saloon cars across different ages and specifications. The asking price is now £300 lower than when we first recorded the advert 22 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Car Planet Watford in Rickmansworth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,072 (6%) under the AskCar estimate of £17,472.

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 873 priced Audi A6 Saloon adverts across different ages and specifications, as of 8 November 2026.

A 2018 Audi A6 Saloon with the 2.0 diesel engine is typically advertised at £14,800: the median of the 54 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2018 Audi A6 Saloon has been on sale for at least 22 days.

Price history

AskCar first saw this advert on 17 October 2026 at £16,700. Its asking price is now £16,400, £300 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 17 October 2026: £16,700
• 7 November 2026: £16,400

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 13 May 2027.

It failed its MOT on 23 April 2026 (offside front lower suspension arm ball joint dust cover severely deteriorated track control arm (front arm under strut) balljoint grease cover perishing; nearside front lower suspension arm ball joint dust cover no longer prevents the ingress of dirt track control arm (front arm under strut) balljoint grease cover split and perished) and passed 7 days later, on 30 April 2026.

Advisories at the latest test: offside rear lower suspension arm corroded but not seriously weakened track control arm corroded at suspension coil spring lower mounting; offside front lower suspension arm ball joint dust cover severely deteriorated track control arm (front arm under strut) balljoint grease cover perishing.

Mileage at that test: 45,683 miles, which matches the advertised 49,077 miles.

Advertised mileage is about 18,600 miles lower than the median mileage of a 2018 Audi A6 Saloon on AskCar.

Similar cars

30 other 2018 Audi A6 Saloon S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £7,995 to £20,395, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 49,227 miles. Price: £17,849, £1,449 more than this car. Dealer: TU Motors in Luton. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-5c1118e2ae93
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, black. Mileage: 48,428 miles. Price: £16,200, £200 less than this car. Dealer: Marshall Volkswagen Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-538c812a95c7
• 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, white. Mileage: 48,000 miles. Price: £16,995, £595 more than this car. Dealer: R-Line Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-6f610327107d

• The nearest: 2018 Audi A6 Saloon S Line, 2.0 diesel saloon, grey, 10 miles from this car. Mileage: 92,000 miles. Price: £13,488, £2,912 less than this car. Dealer: Auto Group in Wembley. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-9bf241e19b27