2018 Audi A8 3.0 S Line

Overview

• Make: Audi
• Model: A8
• Trim: S Line
• Version: 3.0 50 TDI S Line Tiptronic 4WD Euro 6 4dr (282 bhp)
• Year: 2018
• Mileage: 89,510 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 156 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A8 S Line is advertised with 89,510 miles, approximately 33,700 above the typical mileage for its age. Priced at £18,998, it is advertised £134 above the AskCar estimate of £18,864. The AskCar estimate uses UK dealer asking prices, including 219 Audi A8 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 60 days ago. Its asking price has since fallen by £1,000. We checked its advertised mileage against the government's MOT record, and they match. The seller is Arnold Clark Huddersfield Motorstore, based in Huddersfield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £134 (under 1%) over the AskCar estimate of £18,864.

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 219 priced Audi A8 adverts across different ages and specifications, as of 4 November 2026.

A 2018 Audi A8 with the 3.0 diesel engine is typically advertised at £21,200: the median of the 24 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2018 Audi A8 has been on sale for at least 60 days.

Price history

AskCar first saw this advert on 5 September 2026 at £19,998. Its asking price is now £18,998, £1,000 less. The latest price cut was seen on 17 October 2026.

Price changes recorded:

• 5 September 2026: £19,998
• 11 September 2026: £19,498
• 17 October 2026: £18,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 7 August 2027.

It has had 6 MOTs. The latest, on 6 August 2026, passed.

Advisories at the latest test: oil leak, but not excessive; nearside front lower suspension arm pin or bush worn but not resulting in excessive movement; offside front lower suspension arm pin or bush worn but not resulting in excessive movement.

Mileage at that test: 88,820 miles, which matches the advertised 89,510 miles.

Advertised mileage is about 33,700 miles higher than the median mileage of a 2018 Audi A8 on AskCar.

Similar cars

3 other 2018 Audi A8 S Line 3.0 diesel automatic saloons are for sale at UK dealers, from £16,950 to £24,498, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A8 S Line, 3.0 diesel saloon, blue. Mileage: 98,336 miles. Price: £17,295, £1,703 less than this car. Dealer: Pavilion Motor Company in Oldham. AskCar page: https://askcar.co.uk/car/audi-a8-2018-e1678764fdb6
• 2018 Audi A8 S Line, 3.0 diesel saloon, grey. Mileage: 52,911 miles. Price: £24,498, £5,500 more than this car. Dealer: Arnold Clark Liverpool Motorstore / MG / Chery in Liverpool. AskCar page: https://askcar.co.uk/car/audi-a8-2018-a02ed9e7d3d8
• 2018 Audi A8 S Line, 3.0 diesel saloon, grey. Mileage: 10,000 miles. Price: £16,950, £2,048 less than this car. Dealer: Car Firm Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a8-2018-90a1c3d119ef