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 Mercury Mariner.
Producing a precise fuel economy evaluation is so hard that some think not even the federal government can do it, but it looks as though both the Mariner and the Mariner perform about similarly as far as fuel economy.
The HUMMER consumes a lot of gas compared to the Mariner.
As far as MSRP, the Mercury Mariner costs substantially less than the H3.
Utility
The Mercury is likely a better choice than the HUMMER H3 when it comes to transporting cargo, especially if you frequently need to carry a lot of stuff or large animals.
Neither the HUMMER H3 nor the Mercury Mariner has a marked advantage in terms of seating capacity.
The HUMMER H3 outpulls the Mariner by a massive margin.
Convenience
The Mercury Mariner's fuel tank will need to be replenished more often than the unit in the HUMMER H3.
Comfort
While the front cabin in the HUMMER H3 offers a bit more head room than the Mariner, there really isn't much of a difference.
While the rear of the HUMMER H3 offers a bit more head- and leg-room than the Mercury, there honestly isn't much of a difference.
Dimensions
The HUMMER H3 is likely to feel a bit slow because of its high horsepower-to-weight ratio compared to the Mercury.
Your wallet will hurt more every time you fill up the HUMMER H3 than the Mercury Mariner because of its larger tank.
The HUMMER H3 rides lower than the Mercury Mariner, which is a good thing for its center of gravity and ease of access.
The Mariner and the HUMMER H3 compete for the same parking spaces.
The Mariner's shorter wheelbase will likely give a nimbler feel in daily traffic. However, the HUMMER is likely to have a smoother, more stable ride.
Performance
The HUMMER H3 is likely to feel somewhat sluggish because of its high horsepower-to-weight ratio compared to the Mariner.
Handling
The HUMMER H3 has substantially bigger tires than the Mariner. Keep in mind that bigger tires could look and feel better, while smaller tires can provide better handling in deep snow.
With their similar turning radii, the Mercury Mariner and the HUMMER H3 most definitely handle roughly the same into and out of tight spots.
Drivetrain
The HUMMER H3's engine is quite a bit bigger than the Mercury's. Remember that bigger engines may use more gas than smaller ones.
The Mercury Mariner could learn a lesson or two from the HUMMER H3 when it comes to pickup.
Overview
The basic warranty that comes with the Mariner isn't quite as generous as the HUMMER's.