The third-gen GLS is offered with both BS6 petrol and diesel engines. The diesel variant is powered by a 3.0-litre engine that produces 330PS/700Nm. Mercedes-Benz offers the GLS 450 with a 3.0-litre petrol motor that puts out 367PS/500Nm and comes with mild-hybrid technology. It offers an additional 22PS and 250Nm boost under hard acceleration. Both variants come paired to a 9-speed AT and are offered with all-wheel drive.
As per your requirements, you may go with the BMW X7 or the Land Rover Defender if you want something rugged. The BMW X7 comes with three powertrains: 265PS/620Nm 3.0-litre turbocharged diesel, 340PS/450Nm 3.0-litre turbo-petrol, and 400PS/760Nm 3.0-litre quad-turbo diesel engines. On the other hand, Land Rover offers the Defender with a 2.0-litre turbo-petrol engine that puts out 300PS and 400Nm. It gets an 8-speed automatic gearbox and Land Rover’s AWD system. You may click on the following link and compare the available options. We would suggest you to take a test drive before making the final decision. Follow the link and select your city accordingly for dealership details.