2021 Mercedes-Benz S Class

3.0 S500L Mhev AMG Line G-Tronic+ RWD Euro 6 (s/s) 4dr (Executive, Premium Plus) (451 bhp)

£54,995

Good value: £12,970 under the typical £67,965 for this model, age and mileage, drawing on 545 adverts of this make and model.

Overview

Make
Mercedes-Benz
Model
S Class
Trim
AMG LINE
Version
3.0 S500L Mhev AMG Line G-Tronic+ RWD Euro 6 (s/s) 4dr (Executive, Premium Plus) (451 bhp)
Mileage
18,800 miles
Year
2021
Fuel type
Petrol
Body type
Saloon
Engine
3.0 L
Gearbox
Automatic
Power
451 bhp
Seats
5
CO2
171 g/km
Colour
Black
Doors
4
Driven wheels
Rear Wheel Drive
Gearbox version
G-Tronic+
Engine badge
S500L; MHEV
Hybrid type
Mild hybrid
Emissions standard
Euro 6

About this car

At 18,800 miles, this 2021 Mercedes-Benz S Class AMG Line has covered about 18,200 fewer miles than other 2021 Mercedes-Benz S Class cars. The dealer is asking £54,995, which is £12,970 below our market estimate of £67,965. We use UK dealer asking prices, including 545 Mercedes-Benz S Class listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 28 days ago. Its recorded MOT is valid until 12 November 2026, and its advertised mileage is consistent with the latest MOT reading. The seller is Cardiff Motors, based in Cardiff.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 25 September 2026, 28 days ago. Advert duration calculated on 23 October 2026.

Recorded asking prices
Date observedAsking price
25 September 2026£54,995
21 October 2026£54,995

Price and mileage comparison

Estimated market asking price: £67,965. The asking price is £12,970 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 545 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 18,200 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 12 November 2026. 11,037 miles at the last test.

4 other cars with the same year, trim, gearbox and fuel are for sale from £41,950 to £65,950.

Other matching cars
Asking priceMileage
£41,95046,000 miles
£48,49586,281 miles
£64,49026,397 miles
£65,95036,535 miles

These cars have covered 26,397–86,281 miles, compared with 18,800 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

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos