The horsepower is a parameter that most of drivers pay the biggest attention to. In this case, it is the Mitsubishi which has by 10 % horsepower more in relation to the Mercury, which makes this car somewhat faster. Having more horsepower the Mitsubishi Pajero Sport I will as well provide a bit more efficiency in specific speeds.
The wheelbase of a car equals the distance separating its front and rear wheels. The wheelbase significantly affects the driving because of more appropriate car's weight distribution. Mitsubishi Pajero Sport I 3.0 V6 170HP automatic 4x4 has 98 millimeters longer wheelbase distance than Mercury Mariner I. Wheelbase dimensions are crucial to the stability and steering. Thus, the mass of Mitsubishi Pajero Sport I should be better distributed and driving should be easier and safer.
The Mitsubishi Pajero Sport I is 182 millimeters longer in comparison to the Mercury. The length of the car plays a role when it comes to driving comfort and space in the boot. The Mitsubishi Pajero Sport I 3.0 V6 170HP automatic 4x4 very likely will be offering to it's users more room for legs. At the same time the Mitsubishi Pajero Sport I will be better driven ,however, the Mercury Mariner I 2.3 155HP will be a slightly easier to park due to shorter length of the body.
For a smooth ride around town, it is worth to have an automatic however the type of transmisison can have a considerable effect on fuel economy. Automatics may burn up more or less from 5 to 10% more than manuals.