2018 Audi A8 3.0 S Line
Price: £24,498. Fair price: £612 (2%) over the AskCar estimate of £23,886, our expected asking price for this car from its model, age, mileage and specification, drawing on 219 priced Audi A8 adverts on AskCar as of 4 November 2026.
AskCar lists 229 used Audi A8 from 195 UK dealerships, as of 4 November 2026.
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: 52,911 miles
- Fuel: Diesel
- Body: Saloon, 4 doors, 5 seats
- Engine: 3.0 litres, 282 bhp
- Gearbox: Automatic (Tiptronic)
- Drive: Four-wheel drive
- Colour: Grey
- CO2: 152 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2018 Audi A8 S Line has covered 52,911 miles, around 2,900 fewer miles than is typical for its age. The dealer is asking £24,498, which is £612 above the AskCar estimate of £23,886. To work out the AskCar estimate, we analyse UK dealer adverts for 219 Audi A8 cars across different ages and specifications. We first recorded this car for sale 124 days ago. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Liverpool Motorstore / MG / Chery, based in Liverpool. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 4 November 2026.
Price
Fair price: £612 (2%) over the AskCar estimate of £23,886.
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 124 days.
Price history
AskCar first saw this advert on 3 July 2026 at £24,498. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 30 June 2027.
It has had 7 MOTs. The latest, on 1 July 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 52,912 miles, which matches the advertised 52,911 miles.
Advertised mileage is about 2,900 miles lower 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 £18,998, as of 4 November 2026.
The 3 closest to this car in mileage:
- 2018 Audi A8 S Line, 3.0 diesel saloon, blue. Mileage: 89,510 miles. Price: £18,998, £5,500 less than this car. Dealer: Arnold Clark Huddersfield Motorstore in Huddersfield. AskCar page: https://askcar.co.uk/car/audi-a8-2018-44616b195180
- 2018 Audi A8 S Line, 3.0 diesel saloon, grey. Mileage: 10,000 miles. Price: £16,950, £7,548 less than this car. Dealer: Car Firm Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a8-2018-90a1c3d119ef
- 2018 Audi A8 S Line, 3.0 diesel saloon, blue. Mileage: 98,336 miles. Price: £17,295, £7,203 less than this car. Dealer: Pavilion Motor Company in Oldham. AskCar page: https://askcar.co.uk/car/audi-a8-2018-e1678764fdb6
Browse all Audi A8 cars for sale · 2018 Audi A8 price guide
More like this
- Used Audi A8 S Line prices
- Used Audi A8 for sale under £30,000
- Used diesel Audi A8 for sale
- Used Audi A8 for sale near Liverpool
Photos
20 photos of this car are on its AskCar page.
As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.