2018 Mercedes-Benz S Class 2.9 S350Ld AMG Line Executive Premium

Price: £20,500. Far below the going rate: £9,159 (30%) under the AskCar estimate of £29,659, 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 14 November 2026. Worth asking the dealer why.

AskCar lists 637 used Mercedes-Benz S Class from 445 UK dealerships, as of 14 November 2026.

Overview

  • Make: Mercedes-Benz
  • Model: S Class
  • Trim: AMG Line Executive Premium
  • Version: 2.9 S350Ld AMG Line AMG Line Executive Premium G-Tronic+ RWD Euro 6 (s/s) 4dr (Executive, Premium) (282 bhp)
  • Year: 2018
  • Mileage: 64,010 miles
  • Fuel: Diesel
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.9 litres, 282 bhp
  • Gearbox: Automatic (G-Tronic+)
  • Drive: Rear-wheel drive
  • Colour: White
  • CO2: 139 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Mercedes-Benz S Class AMG Line Executive Premium is advertised with 64,010 miles, approximately 12,600 below the typical mileage for its age. Priced at £20,500, this car is advertised £9,159 below the AskCar estimate of £29,659. This is a large price difference, so check the price and vehicle details with the dealer. The AskCar estimate draws on 567 Mercedes-Benz S Class adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. The government's MOT record matches its advertised mileage. You can find this car at Proline Car Care in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 14 November 2026.

How we estimate prices and check cars

Price

Far below the going rate: £9,159 (30%) under the AskCar estimate of £29,659. Worth asking the dealer why.

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 14 November 2026.

A 2018 Mercedes-Benz S Class with the 2.9 diesel engine is typically advertised at £23,600: the median of the 52 for sale on AskCar, as of 14 November 2026.

Time on sale

AskCar first saw this 2018 Mercedes-Benz S Class advertised today. About 4 in 10 of 2018 Mercedes-Benz S Class cars are gone from sale within a month of being advertised: 20 of the 50 first advertised between 15 July 2026 and 11 October 2026.

Price history

AskCar first saw this advert on 14 November 2026 at £20,500. 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 14 November 2026: valid until 10 November 2027.

It has had 8 MOTs. The latest, on 11 November 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 63,598 miles, which matches the advertised 64,010 miles.

Advertised mileage is about 12,600 miles lower than the median mileage of a 2018 Mercedes-Benz S Class on AskCar.

Similar cars

7 other 2018 Mercedes-Benz S Class AMG Line Executive Premium 2.9 diesel automatic saloons are for sale at UK dealers, from £17,995 to £29,995, as of 14 November 2026.

The 3 closest to this car in mileage:

  • The nearest: 2018 Mercedes-Benz S Class AMG Line Executive Premium, 2.9 diesel saloon, white, 42 miles from this car. Mileage: 86,237 miles. Price: £23,795, £3,295 more than this car. Dealer: Westley Motor Company in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2018-67c36f346059

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

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Photos

21 photos of this car are on its AskCar page.

As of 14 November 2026, AskCar lists 600,711 cars and vans from 12,770 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.