2021 Mercedes-Benz S Class 2.9 S400Ld AMG Line Premium Executive

Overview

• Make: Mercedes-Benz
• Model: S Class
• Trim: AMG Line Premium Executive
• Version: 2.9 S400Ld AMG Line AMG Line Premium Executive G-Tronic+ 4WD Euro 6 (s/s) 4dr (Premium, Executive) (325 bhp)
• Year: 2021
• Mileage: 44,500 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.9 litres, 325 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 184 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz S Class AMG Line Premium Executive has covered 44,500 miles. The dealer is asking £54,990, which is £3,533 above the AskCar estimate of £51,457. To work out the AskCar estimate, we analyse UK dealer adverts for 568 Mercedes-Benz S Class cars across different ages and specifications. We first recorded this advert 97 days ago, and its asking price has since fallen by £3,000. Its advertised mileage matches the government's MOT record. It is advertised by Brackley Autos in Bedford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £3,533 (6%) over the AskCar estimate of £51,457.

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 7 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 7 November 2026.

Time on sale

This 2021 Mercedes-Benz S Class has been on sale for at least 97 days.

Price history

AskCar first saw this advert on 2 August 2026 at £57,990. Its asking price is now £54,990, £3,000 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 2 August 2026: £57,990
• 18 September 2026: £56,990
• 30 October 2026: £54,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 26 January 2027.

It has had one MOT, on 27 January 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 42,408 miles, which matches the advertised 44,500 miles.

Advertised mileage is about 1,900 miles higher than the median mileage of a 2021 Mercedes-Benz S Class on AskCar.