2021 Mercedes-Benz S Class

2.9 S350d AMG Line Auto RWD Euro 6 4dr (281 bhp)

£56,890

Fair price: within 8% of the typical £57,500 for this model, age and mileage, drawing on 544 adverts of this make and model.

Overview

Make: Mercedes-Benz
Model: S Class
Trim: AMG LINE
Version: 2.9 S350d AMG Line Auto RWD Euro 6 4dr (281 bhp)
Mileage: 22,000 miles
Year: 2021
Fuel type: Diesel
Body type: Saloon
Engine: 2.9 L
Gearbox: Automatic
Power: 281 bhp
Seats: 5
CO2: 173 g/km
Colour: Black
Doors: 4
Driven wheels: Rear Wheel Drive
Engine badge: S350d
Emissions standard: Euro 6

About this car

With 22,000 miles on the clock, this 2021 Mercedes-Benz S Class AMG Line has done roughly 17,800 fewer miles than a typical 2021 Mercedes-Benz S Class. The dealer is asking £56,890, which is £610 below our market estimate of £57,500. We use UK dealer asking prices, including 544 Mercedes-Benz S Class listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 100 days ago. It is for sale at MB Specialist in Acton.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 17 July 2026, 100 days ago. Advert duration calculated on 25 October 2026.

Recorded asking prices
Date observed	Asking price
17 July 2026	£56,890
23 October 2026	£56,890

Price and mileage comparison

Estimated market asking price: £57,500. The asking price is £610 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 544 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 17,800 miles lower than typical for a 2021 Mercedes-Benz S Class.

MOT

MOT no details held by dvla.

5 other cars with the same year, trim, gearbox and fuel are for sale from £37,995 to £49,995.

Other matching cars
Asking price	Mileage
£37,995	100,778 miles
£40,900	80,516 miles
£46,989	51,128 miles
£49,995	66,900 miles
£49,995	34,509 miles

These cars have covered 34,509–100,778 miles, compared with 22,000 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all Mercedes-Benz S Class cars for sale · 2021 Mercedes-Benz S Class price guide

Vehicle photos

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