2021 Mercedes-Benz GLS

2.9 GLS400d AMG Line AMG Line Premium Plus Executive G-Tronic 4WD Euro 6 (s/s) 5dr (Premium Plus, Executive) (325 bhp)

£44,995

Fair price: within 8% of the typical £45,622 for this model, age and mileage, drawing on 130 adverts of this make and model.

Overview

Make: Mercedes-Benz
Model: GLS
Trim: AMG LINE PREMIUM PLUS EXECUTIVE
Version: 2.9 GLS400d AMG Line AMG Line Premium Plus Executive G-Tronic 4WD Euro 6 (s/s) 5dr (Premium Plus, Executive) (325 bhp)
Mileage: 78,793 miles
Year: 2021
Fuel type: Diesel
Body type: SUV
Engine: 2.9 L
Gearbox: Automatic
Power: 325 bhp
Seats: 7
CO2: 246 g/km
Colour: Silver
Doors: 5
Driven wheels: Four Wheel Drive
Gearbox version: G-Tronic
Engine badge: GLS400d
Emissions standard: Euro 6

About this car

This 2021 Mercedes-Benz GLS AMG Line Premium Plus Executive is advertised with 78,793 miles on the clock. Its asking price of £44,995 is £627 below our estimate of £45,622. Our estimate draws on 130 Mercedes-Benz GLS adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 141 days ago, the asking price has dropped by £7,000. The time on sale and price change could be useful context when negotiating. MOT records show an expiry date of 18 June 2027, and the latest recorded mileage is consistent with the advert. It is advertised by Iac Cars in Winchester.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 6 June 2026, 141 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £7,000 from the first recorded £51,995. 6 price reductions recorded, the latest observed on 18 October 2026.

Recorded asking prices
Date observed	Asking price
6 June 2026	£51,995
16 June 2026	£49,995
2 July 2026	£47,995
10 July 2026	£47,995
5 September 2026	£48,995
23 September 2026	£47,995
30 September 2026	£46,995
2 October 2026	£45,995
18 October 2026	£44,995
23 October 2026	£44,995

Price and mileage comparison

Estimated market asking price: £45,622. The asking price is £627 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 130 adverts of this make and model across different ages and specifications.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 18 June 2027. 77,982 miles at the last test.

1 other cars with the same year, trim, gearbox and fuel are for sale from £43,995 to £43,995.

Other matching cars
Asking price	Mileage
£43,995	84,000 miles

These cars have covered 84,000 miles, compared with 78,793 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 GLS cars for sale · 2021 Mercedes-Benz GLS price guide

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