Utility
Drivers with frequent child-duty might favor the Mercury Mountaineer over the Jeep.
There's little the Grand Cherokee can tow that the Mercury Mountaineer cannot.
Dimensions
The Jeep Grand Cherokee's tank is approximately the same size as the Mercury's, though the Mercury's is a tad larger.
The Jeep and the Mountaineer compete for the same parking spaces.
Convenience
You'll most definitely take the Mercury Mountaineer for a fill-up almost as often as the Jeep Grand Cherokee.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs roughly the same to get the Jeep Grand Cherokee to the dealership as the Mercury Mountaineer.
The Mercury Mountaineer pales in comparison to the Jeep regarding gas mileage.
When it comes to MSRP, the Mercury Mountaineer doesn't cost much less than the Grand Cherokee.
Handling
With their similar turning radii, the Jeep Grand Cherokee and the Mountaineer most definitely handle about the same into and out of tight spots.
Drivetrain
The Jeep Grand Cherokee and the Mercury have similar-sized engines, with a slight advantage to the Mercury.
The Jeep Grand Cherokee has no lessons to learn as far as torque from the Mercury.
Comfort
While the front cabin in the Mercury Mountaineer offers a bit more head room than the Jeep Grand Cherokee, there honestly isn't much of a difference.
The Mercury is not particularly more spacious for your passengers than the Jeep Grand Cherokee.
Overview
The Mercury Mountaineer and the Jeep have the same basic warranty.