2018 Mercedes-Benz GLS

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

£28,989

Fair price: within 8% of the typical £28,897 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: 68,750 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: White
Doors: 5
Driven wheels: Four Wheel Drive
Gearbox version: G-Tronic
Engine badge: GLS350d V6
Emissions standard: Euro 6

About this car

With 68,750 miles on the clock, this 2018 Mercedes-Benz GLS AMG Line has done roughly 3,200 more miles than a typical 2018 Mercedes-Benz GLS. The dealer is asking £28,989, which is £92 above our market estimate of £28,897. Our estimate draws on 130 Mercedes-Benz GLS adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. The asking price is now £1,000 lower than when we first recorded the advert 54 days ago. Its recorded MOT is valid until 2 February 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is A6 Motors, based in Bedford.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 2 September 2026, 54 days ago. Advert duration calculated on 26 October 2026. Net asking-price reduction: £1,000 from the first recorded £29,989. 1 price reduction recorded, the latest observed on 9 October 2026.

Recorded asking prices
Date observed	Asking price
2 September 2026	£29,989
9 October 2026	£28,989
23 October 2026	£28,989

Price and mileage comparison

Estimated market asking price: £28,897. The asking price is £92 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 130 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 3,200 miles higher than typical for a 2018 Mercedes-Benz GLS.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 2 February 2027. 60,550 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
£29,499	47,220 miles
£29,790	62,450 miles

These cars have covered 29,000–108,190 miles, compared with 68,750 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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