Utility
The 4Runner will very likely prove handier than the HUMMER H3 for those of you with frequent kid-cargo.
There's little the Toyota 4Runner can tow that the HUMMER cannot.
Dimensions
The HUMMER and the 4Runner compete for the same parking spaces.
Convenience
The HUMMER H3's fuel tank will need to be replenished a tad more often than the unit in the Toyota 4Runner.
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 HUMMER H3 to the dealership as the Toyota 4Runner.
The HUMMER H3 doesn't pale in comparison to the Toyota 4Runner regarding gas mileage.
The HUMMER H3 won't tax your gasoline budget considerably more than the Toyota 4Runner will.
With respect to MSRP, the 4Runner costs about as much as the HUMMER H3 (though the HUMMER H3 is a bit cheaper).
Handling
With their similar turning circles, the HUMMER H3 and the 4Runner doubtless handle roughly the same into and out of tight spots.
Drivetrain
The HUMMER H3 and the Toyota 4Runner have similar-sized engines, with a slight advantage to the Toyota 4Runner.
Torque is roughly equivalent to acceleration, and in this respect, the Toyota 4Runner isn't much more powerful than the HUMMER H3.
Comfort
While the front cabin in the HUMMER H3 offers a bit more head room than the 4Runner, there honestly isn't much of a difference.
The H3 is not particularly more spacious for your passengers than the Toyota 4Runner.
Overview
The basic warranty that comes with the Toyota 4Runner isn't quite as generous as the H3's.