Utility
The Mitsubishi and the Hyundai can accommodate the same number of passengers.
Towing is substantially more the Hyundai Santa Fe's forte than it is the Mitsubishi's.
Performance
As far as horsepower, the Hyundai Santa Fe packs quite a wallop and will knock the Mitsubishi Outlander down a few rungs. On the flip side, note that high horsepower engines often command higher insurance premiums.
Dimensions
Your wallet will hurt more every time you fill up the Hyundai Santa Fe than the Mitsubishi Outlander because of its larger tank.
The Mitsubishi Outlander and the Hyundai compete for the same parking spaces.
Convenience
You'll most definitely take the Mitsubishi for a fill-up about as often as the Hyundai Santa Fe.
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 Outlander to the dealership as the Hyundai Santa Fe.
The Mitsubishi Outlander will save you money at the pump compared to the Santa Fe.
With respect to MSRP, the Mitsubishi Outlander doesn't cost much less than the Hyundai Santa Fe.
Handling
With their similar turning radii, the Mitsubishi Outlander and the Hyundai Santa Fe most definitely handle about the same into and out of tight spots.
Drivetrain
The Mitsubishi Outlander's engine is a little smaller than the Hyundai Santa Fe's, but not terribly so.
Torque is roughly equivalent to acceleration, and in this respect, the Hyundai Santa Fe isn't much more powerful than the Mitsubishi Outlander.
The Mitsubishi Outlander has no lessons to learn as far as torque from the Hyundai Santa Fe.
Comfort
While the front cabin in the Mitsubishi offers a bit more head room than the Hyundai Santa Fe, there honestly isn't much of a difference.
The Mitsubishi Outlander is not particularly roomier for your passengers than the Hyundai Santa Fe.
Warranty
The Hyundai Santa Fe and the Outlander have the same basic warranty.