Utility
Drivers with frequent child-duty might favor the GL-Class over the Range Rover Sport.
The Mercedes-Benz GL-Class is a better choice than the Land Rover Range Rover Sport as far as transporting cargo, especially if you often need to carry a lot of gear or large animals.
There's little the Land Rover Range Rover Sport can tow that the Mercedes-Benz cannot.
Performance
With that kind of horsepower, both the Land Rover Range Rover Sport and the Mercedes-Benz are genuine sportscars.
Dimensions
The Land Rover Range Rover Sport's tank is roughly the same size as the Mercedes-Benz GL-Class's, though the Mercedes-Benz's is somewhat bigger.
The Land Rover and the Mercedes-Benz compete for the same parking spaces.
The Mercedes-Benz's longer wheelbase will result in a smoother, more stable ride; however, the Land Rover may give a nimbler feel in daily traffic.
Convenience
You'll quite certainly have to take the Land Rover Range Rover Sport for a fill-up more often than the Mercedes-Benz GL-Class because of its tank size and fuel economy.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs approximately the same to get the Range Rover Sport to the dealership as the Mercedes-Benz GL-Class.
The Mercedes-Benz GL-Class won't save you much money at the pump compared to the Land Rover Range Rover Sport.
The GL-Class doesn't pale in comparison to the Land Rover Range Rover Sport regarding gas mileage.
When it comes to MSRP, the Land Rover costs considerably more than the Mercedes-Benz GL-Class.
Handling
With their similar turning radii, the Land Rover and the Mercedes-Benz GL-Class most certainly handle about the same into and out of tight spots.
Drivetrain
The Land Rover Range Rover Sport's engine is a bit smaller than the Mercedes-Benz GL-Class's, but not terribly so.
The Land Rover Range Rover Sport has no lessons to learn regarding pickup from the Mercedes-Benz GL-Class.
Comfort
While the front cabin in the Mercedes-Benz GL-Class offers a bit more head room than the Land Rover Range Rover Sport, there frankly isn't much of a difference.
The ampler interior dimensions of the GL-Class make it considerably roomier for your passengers than the Land Rover Range Rover Sport.
Warranty
The Mercedes-Benz GL-Class and the Land Rover Range Rover Sport have the same basic warranty.