All of Mercury's current products are lightly dressed-up Ford models, with different front and rear details, slightly different sheetmetal in some cases, and a lighter, more lavish interior look. The 2010 Mercury Mountaineer is no exception; Mercury's waterfall grille and softer front end help make the Mountaineer appear just a little more carlike.
Car and Driver thinks that the Mountaineer's "styling looks perhaps too familiar," which is not surprising. The Mountaineer shares much of its sheetmetal and even its detailing with the Explorer, but Kelley Blue Book does not necessarily consider this a detriment: "the Mercury Mountaineer takes the rugged good looks of the Explorer and stamps Mercury's new styling theme on its sheetmetal."
The Mountaineer’s interior sports a more urbane look than that of the Explorer, but it’s still straightforward, uncomplicated, and handsome. A reviewer at MotherProof observes "opening...the doors on the Mercury Mountaineer elicits big wows everywhere we go," and Kelley Blue Book says the Mountaineer "interior is beautifully arranged, with high-quality plastics and an intelligent dash design."