2021 Mercedes-Benz CLS

2.9 400d AMG Line 9G-Tronic 4WD Euro 6 4dr Ngt Ed Pr + (325 bhp)

£28,542

Fair price: within 8% of the typical £29,318 for this model, age and mileage, drawing on 313 adverts of this make and model.

Overview

Make: Mercedes-Benz
Model: CLS
Trim: AMG LINE
Version: 2.9 400d AMG Line 9G-Tronic 4WD Euro 6 4dr Ngt Ed Pr + (325 bhp)
Mileage: 47,254 miles
Year: 2021
Fuel type: Diesel
Body type: Coupe
Engine: 2.9 L
Gearbox: Automatic
Power: 325 bhp
Seats: 5
CO2: 191 g/km
Colour: Grey
Doors: 4
Driven wheels: Four Wheel Drive
Gearbox version: 9G-Tronic
Engine badge: CLS400d
Emissions standard: Euro 6

About this car

At 47,254 miles, this 2021 Mercedes-Benz CLS AMG Line has covered about 2,300 more miles than other 2021 Mercedes-Benz CLS cars. Our estimated market asking price is £29,318. This car is advertised at £28,542, which is £776 below that figure. We use UK dealer asking prices, including 313 Mercedes-Benz CLS listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 11 days ago. Its recorded MOT is valid until 11 August 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Vertu Mercedes Slough, based in Slough.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 15 October 2026, 11 days ago. Advert duration calculated on 26 October 2026.

Recorded asking prices
Date observed	Asking price
15 October 2026	£27,000
16 October 2026	£28,778
17 October 2026	£28,695
18 October 2026	£28,812
20 October 2026	£28,780
21 October 2026	£28,778
22 October 2026	£28,542
23 October 2026	£28,542

Price and mileage comparison

Estimated market asking price: £29,318. The asking price is £776 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 313 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 2,300 miles higher than typical for a 2021 Mercedes-Benz CLS.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 11 August 2027. 46,051 miles at the last test.

2 other cars with the same year, trim, gearbox and fuel are for sale from £25,999 to £26,420.

Other matching cars
Asking price	Mileage
£25,999	55,680 miles
£26,420	54,761 miles

These cars have covered 54,761–55,680 miles, compared with 47,254 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 CLS cars for sale · 2021 Mercedes-Benz CLS price guide

Vehicle photos

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