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: 23,924 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: 190 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz S Class AMG Line Premium Plus has covered 23,924 miles, around 15,900 fewer miles than is typical for its age. The dealer is asking £52,995, which is £7,250 below the AskCar estimate of £60,245. To work out the AskCar estimate, we analyse UK dealer adverts for 565 Mercedes-Benz S Class cars across different ages and specifications. We have tracked this advert for 16 days. Its advertised mileage matches the government's MOT record. You can find this car at Blackline Motors in Oldham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Good value: £7,250 (12%) under the AskCar estimate of £60,245.

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 565 priced Mercedes-Benz S Class adverts across different ages and specifications, as of 6 November 2026.

A 2021 Mercedes-Benz S Class with the 2.9 diesel engine is typically advertised at £54,400: the median of the 21 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2021 Mercedes-Benz S Class has been on sale for at least 16 days.

Price history

AskCar first saw this advert on 21 October 2026 at £52,995. 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 6 November 2026: valid until 22 September 2027.

It has had 2 MOTs. The latest, on 23 September 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 23,889 miles, which matches the advertised 23,924 miles.

Advertised mileage is about 15,900 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 £63,124, as of 6 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, £4,995 more 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, black. Mileage: 36,970 miles. Price: £63,124, £10,129 more than this car. Dealer: Heartlands Motor Group in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-f76e02739da8
• 2021 Mercedes-Benz S Class AMG Line Premium Plus, 2.9 diesel saloon, black. Mileage: 84,678 miles. Price: £46,990, £6,005 less than this car. Dealer: Laysa in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-bcebdd3cdb54