2017 Mercedes-Benz GLS 3.0 GLS350d V6

Overview

• Make: Mercedes-Benz
• Model: GLS
• Version: 3.0 GLS350d V6 G-Tronic 4WD Euro 6 (s/s) 5dr (254 bhp)
• Year: 2017
• Mileage: 65,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 3.0 litres, 254 bhp
• Gearbox: Automatic (G-Tronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 199 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2017 Mercedes-Benz GLS is advertised with 65,000 miles on the clock. The dealer is asking £25,000, which is £3,082 below the AskCar estimate of £28,082. To work out the AskCar estimate, we analyse UK dealer adverts for 143 Mercedes-Benz GLS cars across different ages and specifications. We first recorded this car for sale 163 days ago. The recorded MOT expired on 5 October 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Rockstar Motors in Colchester. 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

Good value: £3,082 (10%) under the AskCar estimate of £28,082.

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 2017 Mercedes-Benz GLS with the 3.0 diesel engine is typically advertised at £28,200: the median of the 12 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2017 Mercedes-Benz GLS has been on sale for at least 163 days.

Price history

AskCar first saw this advert on 28 May 2026 at £25,000. 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: the latest record we hold ran out on 5 October 2026; ask the dealer for the current MOT.

It failed its MOT on 1 October 2025 (offside front tyre has ply or cords exposed) and passed 5 days later, on 6 October 2025.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 64,846 miles, which matches the advertised 65,000 miles.