Performance
Regarding horsepower, the Mercury Mariner packs quite a wallop and will knock the Suzuki Grand Vitara down a few rungs. However, bear in mind that high horsepower engines often command higher insurance premiums.
Drivetrain
The Grand Vitara's engine is slightly smaller than the Mariner's, but not terribly so.
The Suzuki Grand Vitara has no lessons to learn when it comes to torque from the Mercury Mariner.
Torque is roughly equivalent to acceleration, and in this respect, the Mercury Mariner isn't much more powerful than the Suzuki Grand Vitara.
Utility
Neither the Suzuki Grand Vitara nor the Mariner has a marked advantage as far as seating capacity.
Towing is considerably more the Suzuki Grand Vitara's forte than it is the Mariner's.
Convenience
The Grand Vitara's fuel tank will need to be replenished a bit more often than the unit in the Mercury Mariner.
Comfort
While the front cabin in the Mercury Mariner offers a bit more head room than the Suzuki Grand Vitara, there frankly isn't much of a difference.
The Grand Vitara is not particularly roomier for your passengers than the Mercury Mariner.
Dimensions
The Mercury's tank is roughly the same size as the Suzuki Grand Vitara's, though the Suzuki Grand Vitara's is a bit larger.
The Mercury Mariner and the Suzuki Grand Vitara compete for the same parking spaces.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs about the same to get the Mercury to the dealership as the Suzuki Grand Vitara.
Producing an accurate fuel economy evaluation is so hard that some think not even the federal government can do it, but it looks as though both the Mercury Mariner and the Mercury Mariner perform about comparably regarding fuel economy.
In terms of fuel economy, the Mercury Mariner and the Suzuki Grand Vitara don't differ much.
The Grand Vitara isn't much less expensive than the Mercury Mariner with respect to MSRP.
Warranty
The Mercury and the Suzuki Grand Vitara have the same basic warranty.