Handling
With their similar turning radii, the Mercury Mariner and the Dodge Journey likely handle approximately the same into and out of tight spots.
Drivetrain
The Mercury Mariner's engine isn't much bigger than the Dodge Journey's.
The Dodge Journey has no lessons to learn when it comes to torque from the Mercury Mariner.
Utility
Drivers with frequent child-duty might favor the Dodge over the Mercury Mariner.
Convenience
You most certainly won't have to visit your friendly gas station more often with the Dodge Journey than with the Mariner, because both offer similar mileage ranges.
Comfort
While the front cabin in the Dodge Journey offers a bit more head room than the Mariner, there honestly isn't much of a difference.
The ampler interior dimensions of the Mercury Mariner make it significantly more spacious for your passengers than the Journey.
Dimensions
Your wallet will hurt more every time you fill up the Journey than the Mariner because of its bigger tank.
The Mercury Mariner and the Dodge Journey compete for the same parking spaces.
The Mercury Mariner's shorter wheelbase may produce a less-settled highway ride but a more maneuverable feel in daily traffic than the Dodge Journey.
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 Dodge to the dealership as the Mercury Mariner.
The Mercury Mariner will save you money at the pump compared to the Journey.
When it comes to gas mileage, the Mariner bests the Dodge Journey.
When it comes to MSRP, the Mercury Mariner doesn't cost much less than the Dodge Journey.
The Dodge Journey will cost you a lots_of_money in gas every year compared to the Mercury Mariner.
Warranty
The Dodge and the Mercury Mariner have the same basic warranty.