2021 Mercedes-Benz S Class

2.9 S350d AMG Line Premium 9G-Tronic RWD Euro 6 4dr (281 bhp)

£41,900

Fair price: within 8% of the typical £41,771 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 PREMIUM
Version: 2.9 S350d AMG Line Premium 9G-Tronic RWD Euro 6 4dr (281 bhp)
Mileage: 71,581 miles
Year: 2021
Fuel type: Diesel
Body type: Saloon
Engine: 2.9 L
Gearbox: Automatic
Power: 281 bhp
Seats: 5
CO2: 177 g/km
Colour: Silver
Doors: 4
Driven wheels: Rear Wheel Drive
Gearbox version: 9G-Tronic
Engine badge: S350d
Emissions standard: Euro 6

About this car

At 71,581 miles, this 2021 Mercedes-Benz S Class AMG Line Premium has covered about 31,800 more miles than other 2021 Mercedes-Benz S Class cars. Its asking price of £41,900 is £129 above our estimate of £41,771. The estimate uses 544 UK dealer adverts for the Mercedes-Benz S Class, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 150 days ago, the asking price has dropped by £7,950. That history is worth bearing in mind when speaking to the dealer. MOT records show an expiry date of 17 May 2027, and the latest recorded mileage is consistent with the advert. The seller is Sytner Select Northampton, based in Northampton.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 150 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £7,950 from the first recorded £49,850. 12 price reductions recorded, the latest observed on 22 October 2026.

Recorded asking prices
Date observed	Asking price
28 May 2026	£49,850
17 June 2026	£49,000
26 June 2026	£48,500
11 July 2026	£48,500
23 July 2026	£48,000
24 July 2026	£48,000
13 August 2026	£46,500
14 August 2026	£46,500
22 August 2026	£46,000
27 August 2026	£45,900
10 September 2026	£45,150
17 September 2026	£44,500
26 September 2026	£43,900
8 October 2026	£43,400
16 October 2026	£42,400
22 October 2026	£41,900
23 October 2026	£41,900

Price and mileage comparison

Estimated market asking price: £41,771. The asking price is £129 above 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 31,800 miles higher than typical for a 2021 Mercedes-Benz S Class.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 17 May 2027. 71,523 miles at the last test.

6 other cars with the same year, trim, gearbox and fuel are for sale from £49,995 to £58,000.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£49,995	54,151 miles
£53,000	18,982 miles
£54,898	35,211 miles
£55,000	42,881 miles
£56,898	28,241 miles

These cars have covered 18,982–54,151 miles, compared with 71,581 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

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