The Mercury Mariner Hybrid compact SUV was introduced in 2005 for the 2006 model year. Initially, all sales for this environmentally friendly and fuel efficient compact SUV were transacted online only, in an organized attempt to satisfy the expected high interest and demand in a technologically advanced and efficient manner. All wheel drive and 4 wheel disc brakes were standard, as was a continuously variable automatic transmission and 2.3 liter, four cylinder engine with two electric motors and a cleverly stowed battery pack under the floor. Combining the most effective and efficient performance features of a gasoline engine and an electric motor resulted in outstanding fuel efficiency and lower emissions without any loss of performance or functionality. The Hybrid provided good acceleration and operation was relatively smooth.

Although sales of this model were not as high as expected, a little more marketing coupled with increased consumer interest in all things 'green' -or environmentally friendly - along with the rising cost of fuel and the savings associated with a hybrid model - made the 2007 Mariner Hybrid an increasingly popular consumer choice for a compact SUV, although no significant changes were made to distinguish the 2006 from the 2007 model. The interior and exterior were identical to the other Mercury Mariner non-hybrid models and offered the same athletic good looks and comfortable, well designed interior for compact SUV enthusiasts that like to add a little luxury to their practical daily drives.

The entire line of Mariner's was redesigned for the 2008 model year. Affordable, functional and attractive, the 2008 Mercury Mariner Hybrid accommodates more than 60 cubic feet of cargo with the rear seat in the down position. Up to five passengers can enjoy the deluxe interior, smooth and quiet operation and new MP3 player connectivity. The speed and handling of this compact hybrid SUV are not superior, but the acceleration is good, the ride is relatively smooth and the price is right.