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: 84,678 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

At 84,678 miles, this 2021 Mercedes-Benz S Class AMG Line Premium Plus has covered about 44,900 more miles than other 2021 Mercedes-Benz S Class cars. Priced at £46,990, it is advertised £5,549 above the AskCar estimate of £41,441. The AskCar estimate uses UK dealer asking prices, including 565 Mercedes-Benz S Class adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 71 days ago, the asking price has dropped by £3,010. Our records show an MOT expiry date of 22 October 2026, which has passed. Ask the dealer for an update. The government's MOT record matches its advertised mileage. It is for sale at Laysa in Birmingham. 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

Above the going rate: £5,549 (13%) over the AskCar estimate of £41,441.

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 71 days.

Price history

AskCar first saw this advert on 27 August 2026 at £50,000. Its asking price is now £46,990, £3,010 less. The latest price cut was seen on 25 October 2026.

Price changes recorded:

• 27 August 2026: £50,000
• 30 September 2026: £48,990
• 14 October 2026: £47,990
• 25 October 2026: £46,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: the latest record we hold ran out on 22 October 2026; ask the dealer for the current MOT.

It has had 3 MOTs. The latest, on 22 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 84,655 miles, which matches the advertised 84,678 miles.

Advertised mileage is about 44,900 miles higher 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 £52,995 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: 36,970 miles. Price: £63,124, £16,134 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: 27,765 miles. Price: £57,990, £11,000 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, white. Mileage: 23,924 miles. Price: £52,995, £6,005 more than this car. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-2aa8f9cfc0a8