2018 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line

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)
• Year: 2018
• Mileage: 29,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 3.0 litres, 254 bhp
• Gearbox: Automatic (G-Tronic)
• Drive: Four-wheel drive
• Colour: White
• CO2: 199 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Mercedes-Benz GLS AMG Line has covered 29,000 miles. Its asking price of £37,500 is £1,616 above the AskCar estimate of £35,884. The AskCar estimate uses 143 UK dealer adverts for the Mercedes-Benz GLS, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 163 days ago. The last MOT shows 56,511 miles, more than the advert. This is worth checking with the dealer. The latest recorded MOT expires on 13 December 2026. You can find this car at E & E Car Sales in Canvey Island. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,616 (4%) over the AskCar estimate of £35,884.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 143 priced Mercedes-Benz GLS adverts across different ages and specifications, as of 7 November 2026.

A 2018 Mercedes-Benz GLS with the 3.0 diesel engine is typically advertised at £30,000: the median of the 15 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2018 Mercedes-Benz GLS has been on sale for at least 163 days.

Price history

AskCar first saw this advert on 28 May 2026 at £37,500. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 13 December 2026.

It has had 3 MOTs. The latest, on 11 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 56,511 miles. The advert says 29,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 29,400 miles lower than the median mileage of a 2018 Mercedes-Benz GLS on AskCar.

Similar cars

10 other 2018 Mercedes-Benz GLS AMG Line 3.0 diesel automatic SUVs are for sale at UK dealers, from £23,500 to £33,990, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2018 Mercedes-Benz GLS AMG Line, 3.0 diesel SUV, grey. Mileage: 33,000 miles. Price: £33,990, £3,510 less than this car. Dealer: LTV in Manchester. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2018-8a6596e8699f
• 2018 Mercedes-Benz GLS AMG Line, 3.0 diesel SUV, white. Mileage: 47,220 miles. Price: £28,899, £8,601 less than this car. Dealer: Fords of Winsford Manchester in Manchester. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2018-9285f4710095
• 2018 Mercedes-Benz GLS AMG Line, 3.0 diesel SUV, white. Mileage: 51,411 miles. Price: £31,300, £6,200 less than this car. Dealer: Saxtons.co.uk in Chelmsford. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2018-24629538050e