Utility
Neither the Honda CR-V nor the Mercury Mariner has a marked advantage in terms of seating capacity.
The Mariner outpulls the Honda by a massive margin.
Performance
As far as horsepower, the Mariner packs quite a wallop and will knock the Honda CR-V down a few rungs. However, bear in mind that high horsepower engines often command higher insurance premiums.
Dimensions
The CR-V's tank is about the same size as the Mariner's, though the Mercury Mariner's is somewhat bigger.
The Mercury and the Honda CR-V compete for the same parking spaces.
Convenience
You'll most definitely take the Honda CR-V for a fill-up roughly as often as the Mariner.
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 CR-V to the dealership as the Mercury Mariner.
The Mercury Mariner won't save you much money at the pump compared to the Honda CR-V.
As far as MSRP, the Honda doesn't cost much less than the Mercury Mariner.
Handling
With their comparable turning circles, the Mercury Mariner and the Honda CR-V most certainly handle roughly the same into and out of tight spots.
Drivetrain
The Honda CR-V's engine is a tad smaller than the Mercury Mariner's, but not terribly so.
Torque is the force that lets you accelerate quickly, and in this respect, the Mariner isn't much more powerful than the CR-V.
Comfort
While the front cabin in the Honda CR-V offers a bit more head room than the Mercury, there frankly isn't much of a difference.
The ampler interior dimensions of the Honda make it considerably more spacious for your passengers than the Mercury Mariner.
Warranty
The Mercury Mariner and the Honda CR-V have the same basic after-sale protection.