2018 Mercedes-Benz S Class 2.9 S400Ld AMG Line

Overview

• Make: Mercedes-Benz
• Model: S Class
• Trim: AMG Line
• Version: 2.9 S400Ld AMG Line G-Tronic+ RWD Euro 6 (s/s) 4dr (335 bhp)
• Year: 2018
• Mileage: 65,802 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.9 litres, 335 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Mercedes-Benz S Class AMG Line is advertised with 65,802 miles, approximately 10,800 below the typical mileage for its age. The dealer is asking £23,999, which is £1,709 below the AskCar estimate of £25,708. To work out the AskCar estimate, we analyse UK dealer adverts for 567 Mercedes-Benz S Class cars across different ages and specifications. It first appeared in our advert records 6 days ago. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at P W Millar Ford in Barry. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,709 (6%) under the AskCar estimate of £25,708.

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 567 priced Mercedes-Benz S Class adverts across different ages and specifications, as of 5 November 2026.

A 2018 Mercedes-Benz S Class with the 2.9 diesel engine is typically advertised at £24,000: the median of the 50 for sale on AskCar, as of 5 November 2026.

Time on sale

AskCar first saw this 2018 Mercedes-Benz S Class advertised 6 days ago.

Price history

AskCar first saw this advert on 30 October 2026 at £23,999. 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 5 November 2026: valid until 23 December 2026.

It has had 5 MOTs. The latest, on 19 December 2025, passed.

Advisories at the latest test: nearside front lower suspension arm ball joint has slight play.

Mileage at that test: 59,226 miles, which matches the advertised 65,802 miles.

Advertised mileage is about 10,800 miles lower than the median mileage of a 2018 Mercedes-Benz S Class on AskCar.

Similar cars

8 other 2018 Mercedes-Benz S Class AMG Line 2.9 diesel automatic saloons are for sale at UK dealers, from £19,070 to £25,495, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2018 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 61,500 miles. Price: £25,495, £1,496 more than this car. Dealer: Pembury Cars in Epping. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2018-b816a58ff81a
• 2018 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 52,000 miles. Price: £23,999, the same price as this car. Dealer: Lookers in Belfast. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2018-6dfef3e1536e
• 2018 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, silver. Mileage: 83,000 miles. Price: £19,995, £4,004 less than this car. Dealer: Jefferies Farm Car Sales in Billingshurst. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2018-9d56c5ee48e7

• The nearest: 2018 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black, under a mile from this car. Mileage: 39,993 miles. Price: £24,490, £491 more than this car. Dealer: P W Millar Ford in Barry. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2018-1e4ebad74085