2021 Mercedes-Benz S Class

2.9 S350d AMG Line Premium G-Tronic+ RWD Euro 6 (s/s) 4dr (282 bhp)

£53,000

Fair price: within 8% of the typical £51,275 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 G-Tronic+ RWD Euro 6 (s/s) 4dr (282 bhp)
Mileage: 18,982 miles
Year: 2021
Fuel type: Diesel
Body type: Saloon
Engine: 2.9 L
Gearbox: Automatic
Power: 282 bhp
Seats: 5
CO2: 177 g/km
Colour: Grey
Doors: 4
Driven wheels: Rear Wheel Drive
Gearbox version: G-Tronic+
Engine badge: S350d
Emissions standard: Euro 6

About this car

At 18,982 miles, this 2021 Mercedes-Benz S Class AMG Line Premium has covered about 20,800 fewer miles than other 2021 Mercedes-Benz S Class cars. The dealer is asking £53,000, which is £1,725 above our market estimate of £51,275. Our estimate draws on 544 Mercedes-Benz S Class adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 150 days ago. Its asking price has since fallen by £6,700. That may be worth mentioning if you discuss the price with the dealer. MOT records show an expiry date of 29 April 2027, and the latest recorded mileage is consistent with the advert. The seller is Saxtons.co.uk, based in Chelmsford.

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: £6,700 from the first recorded £59,700. 11 price reductions recorded, the latest observed on 30 September 2026.

Recorded asking prices
Date observed	Asking price
28 May 2026	£59,700
2 June 2026	£59,450
18 June 2026	£58,700
7 July 2026	£58,200
10 July 2026	£58,200
17 July 2026	£57,650
29 July 2026	£56,700
11 August 2026	£56,450
21 August 2026	£55,700
1 September 2026	£54,650
8 September 2026	£53,700
18 September 2026	£53,200
30 September 2026	£52,700
10 October 2026	£53,000
23 October 2026	£53,000

Price and mileage comparison

Estimated market asking price: £51,275. The asking price is £1,725 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 20,800 miles lower than typical for a 2021 Mercedes-Benz S Class.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 29 April 2027. 18,989 miles at the last test.

6 other cars with the same year, trim, gearbox and fuel are for sale from £41,900 to £58,000.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£41,900	71,581 miles
£49,995	54,151 miles
£54,898	35,211 miles
£55,000	42,881 miles
£56,898	28,241 miles

These cars have covered 26,000–71,581 miles, compared with 18,982 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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