The 2008 Mercury Mariner Hybrid comes with a powerful electric motor that complements an even more powerful gasoline engine. The vehicle operates on electric-only mode at speeds of 25 mph or less. A 330-volt Nickel Metal Hydride (NiMH) battery provides power to the electric motor and is charged through regenerative braking as well as a generator motor. The battery comes with a 8-year/100,000 mile warranty.
