2018 Mercedes-Benz GLS

3.0 GLS350d V6 AMG Line G-Tronic 4WD Euro 6 (s/s) 5dr (254 bhp)

£29,990

Fair price: within 8% of the typical £31,093 for this model, age and mileage, drawing on 130 adverts of this make and model.

Overview

Make: Mercedes-Benz
Model: GLS
Trim: AMG LINE
Version: 3.0 GLS350d V6 AMG Line G-Tronic 4WD Euro 6 (s/s) 5dr (254 bhp)
Mileage: 57,794 miles
Year: 2018
Fuel type: Diesel
Body type: SUV
Engine: 3.0 L
Gearbox: Automatic
Power: 254 bhp
Seats: 7
CO2: 199 g/km
Colour: Black
Doors: 5
Driven wheels: Four Wheel Drive
Gearbox version: G-Tronic
Engine badge: GLS350d V6
Emissions standard: Euro 6

About this car

This 2018 Mercedes-Benz GLS AMG Line is advertised with 57,794 miles, approximately 7,800 below the typical mileage for its age. Our estimated market asking price is £31,093. This car is advertised at £29,990, which is £1,103 below that figure. We use UK dealer asking prices, including 130 Mercedes-Benz GLS listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 38 days ago. Its recorded MOT is valid until 19 May 2027, and its advertised mileage is consistent with the latest MOT reading. It is for sale at Penistone Motor Group in Sheffield.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 18 September 2026, 38 days ago. Advert duration calculated on 26 October 2026.

Recorded asking prices
Date observed	Asking price
18 September 2026	£29,990
23 October 2026	£29,990

Price and mileage comparison

Estimated market asking price: £31,093. The asking price is £1,103 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.

Advertised mileage is approximately 7,800 miles lower than typical for a 2018 Mercedes-Benz GLS.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 19 May 2027. 55,495 miles at the last test.

11 other cars with the same year, trim, gearbox and fuel are for sale from £23,500 to £37,500.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£23,500	108,190 miles
£26,100	85,531 miles
£28,495	59,000 miles
£28,989	68,750 miles
£29,499	47,220 miles

These cars have covered 29,000–108,190 miles, compared with 57,794 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 · 2018 Mercedes-Benz GLS price guide

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