2021 Mercedes-Benz S Class 2.9 S350Ld AMG Line Premium Plus

Overview

• Make: Mercedes-Benz
• Model: S Class
• Trim: AMG Line Premium Plus
• Version: 2.9 S350Ld AMG Line Premium Plus G-Tronic+ RWD Euro 6 (s/s) 4dr (282 bhp)
• Year: 2021
• Mileage: 36,970 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: 190 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Mercedes-Benz S Class AMG Line Premium Plus is 36,970 miles. Its asking price of £63,124 is £6,755 above the AskCar estimate of £56,369. The AskCar estimate uses UK dealer asking prices, including 568 Mercedes-Benz S Class adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 115 days ago. The advertised mileage is lower than the latest MOT reading of 43,765 miles. Ask the dealer to explain. Its recorded MOT is valid until 18 June 2027. It is advertised by Heartlands Motor Group in Birmingham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £6,755 (11%) over the AskCar estimate of £56,369.

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 568 priced Mercedes-Benz S Class adverts across different ages and specifications, as of 9 November 2026.

A 2021 Mercedes-Benz S Class with the 2.9 diesel engine is typically advertised at £53,900: the median of the 22 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2021 Mercedes-Benz S Class has been on sale for at least 115 days.

Price history

AskCar first saw this advert on 17 July 2026 at £62,995. Its asking price is now £63,124, £129 more.

Price changes recorded:

• 17 July 2026: £62,995
• 27 August 2026: £63,124

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 18 June 2027.

It has had 3 MOTs. The latest, on 22 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 43,765 miles. The advert says 36,970 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 5,900 miles lower than the median mileage of a 2021 Mercedes-Benz S Class on AskCar.

Similar cars

3 other 2021 Mercedes-Benz S Class AMG Line Premium Plus 2.9 diesel automatic saloons are for sale at UK dealers, from £46,990 to £57,990, as of 9 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz S Class AMG Line Premium Plus, 2.9 diesel saloon, black. Mileage: 27,765 miles. Price: £57,990, £5,134 less than this car. Dealer: G C Motors in Harrogate. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-f995dcc4bc1e
• 2021 Mercedes-Benz S Class AMG Line Premium Plus, 2.9 diesel saloon, white. Mileage: 23,924 miles. Price: £52,995, £10,129 less than this car. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-2aa8f9cfc0a8
• 2021 Mercedes-Benz S Class AMG Line Premium Plus, 2.9 diesel saloon, black. Mileage: 84,678 miles. Price: £46,990, £16,134 less than this car. Dealer: Laysa in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-bcebdd3cdb54