2018 Mercedes-Benz S Class 2.9 S350d AMG Line

Price: £23,999. Good value: £3,123 (11%) under the AskCar estimate of £27,122, our expected asking price for this car from its model, age, mileage and specification, drawing on 567 priced Mercedes-Benz S Class adverts on AskCar as of 5 November 2026.

AskCar lists 631 used Mercedes-Benz S Class from 445 UK dealerships, as of 5 November 2026.

Overview

  • Make: Mercedes-Benz
  • Model: S Class
  • Trim: AMG Line
  • Version: 2.9 S350d AMG Line G-Tronic+ RWD Euro 6 (s/s) 4dr (282 bhp)
  • Year: 2018
  • Mileage: 52,000 miles
  • Fuel: Diesel
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.9 litres, 282 bhp
  • Gearbox: Automatic (G-Tronic+)
  • Drive: Rear-wheel drive
  • Colour: Black
  • CO2: 153 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Mercedes-Benz S Class AMG Line has covered 52,000 miles, around 24,600 fewer miles than is typical for its age. Its asking price of £23,999 is £3,123 below the AskCar estimate of £27,122. The AskCar estimate uses 567 UK dealer adverts for the Mercedes-Benz S Class, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 101 days ago. Its asking price has since fallen by £936. The recorded MOT expired on 21 September 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Lookers in Belfast. 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

Good value: £3,123 (11%) under the AskCar estimate of £27,122.

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

This 2018 Mercedes-Benz S Class has been on sale for at least 101 days.

Price history

AskCar first saw this advert on 27 July 2026 at £24,935. Its asking price is now £23,999, £936 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

  • 27 July 2026: £24,935
  • 29 July 2026: £25,949
  • 11 August 2026: £25,749
  • 22 August 2026: £25,649
  • 2 September 2026: £25,449
  • 11 September 2026: £24,949
  • 22 September 2026: £24,749
  • 2 October 2026: £24,899
  • 13 October 2026: £24,449
  • 23 October 2026: £24,249
  • 28 October 2026: £23,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 21 September 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 22 September 2024, passed.

There were no advisories at the latest test.

Mileage at that test: 52,278 miles, which matches the advertised 52,000 miles.

Advertised mileage is about 24,600 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: 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
  • 2018 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 65,802 miles. Price: £23,999, the same price as this car. Dealer: P W Millar Ford in Barry. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2018-ea7ba4c5aeac
  • The nearest: 2018 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black, 215 miles from this car. Mileage: 89,823 miles. Price: £20,499, £3,500 less than this car. Dealer: Automania Specialist Cars in West Bromwich. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2018-1026519dc5f7

Browse all Mercedes-Benz S Class cars for sale · 2018 Mercedes-Benz S Class price guide

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Photos

30 photos of this car are on its AskCar page.

As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.