Utility
The Mercury Mountaineer will quite certainly prove more practical than the Endeavor for those of you with frequent child-cargo.
The Mercury Mountaineer outpulls the Mitsubishi by a massive margin.
Performance
In terms of horsepower, the Mercury Mountaineer packs quite a punch and will knock the Mitsubishi Endeavor down a few rungs. However, remember that high horsepower engines often command higher insurance premiums.
Dimensions
The Mercury Mountaineer is considerably more bulky than the Mitsubishi Endeavor.
The Endeavor's tank is approximately the same size as the Mercury's, though the Mountaineer's is slightly bigger.
The Mitsubishi Endeavor and the Mercury Mountaineer compete for the same parking spaces.
Convenience
You likely won't have to visit your friendly gas station more often with the Mitsubishi Endeavor than with the Mountaineer, because both offer comparable ranges.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs almost the same to get the Mitsubishi Endeavor to the dealership as the Mercury.
The Mercury Mountaineer isn't much pricier than the Mitsubishi Endeavor as far as MSRP.
Handling
With their comparable turning radii, the Mountaineer and the Endeavor likely handle about the same into and out of tight spots.
Drivetrain
The Mitsubishi Endeavor and the Mercury Mountaineer have similar-sized engines, with a slight advantage to the Mercury Mountaineer.
The Mercury Mountaineer has no lessons to learn in terms of pickup from the Mitsubishi Endeavor.
Comfort
While the front cabin in the Mercury Mountaineer offers a bit more head room than the Mitsubishi, there honestly isn't much of a difference.
While the rear of the Mitsubishi Endeavor provides a bit more head- and leg-room than the Mountaineer, there frankly isn't much of a difference.
Overview
The basic after-sale protection that comes with the Mercury Mountaineer isn't quite as generous as the Endeavor's.