Utility
The Pilot will quite certainly prove more practical than the Mercury Mountaineer for those of you with frequent kid-cargo.
The Mercury Mountaineer outpulls the Honda Pilot by a large margin.
Dimensions
The Pilot's tank is approximately the same size as the Mercury Mountaineer's, though the Mercury's is a tad larger.
The Honda Pilot and the Mercury compete for the same parking spaces.
Convenience
You'll likely take the Mercury Mountaineer for a fill-up approximately as often as the Pilot.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. The Honda Pilot is substantially cheaper to get to the dealership than the Mercury Mountaineer.
The Mountaineer guzzles a lot of gas compared to the Honda Pilot.
The Mountaineer pales in comparison to the Honda Pilot as far as gas mileage.
Regarding MSRP, the Honda Pilot doesn't cost much less than the Mercury.
Handling
With their comparable turning circles, the Mercury Mountaineer and the Honda Pilot most definitely handle approximately the same into and out of tight spots.
Drivetrain
The Mercury Mountaineer has a bigger engine than the Honda Pilot. Note that smaller engines typically get better gas mileage, but a smaller engine usually has to work a little harder.
Comfort
While the front cabin in the Honda Pilot offers a bit more head room than the Mercury, there really isn't much of a difference.
The ampler interior dimensions of the Pilot make it considerably more spacious for your passengers than the Mercury Mountaineer.
Warranty
The Mountaineer and the Honda Pilot have the same basic warranty.