The Honda Insight is the first gasoline-electric hybrid vehicle to be sold in the United States. The heart of the hybrid system is Honda's innovative Integrated Motor Assist (IMA), which couples an all-new 1.0 liter, 3-cylinder engine with an ultra-thin electric motor for outstanding performance and efficiency.
The IMA system, combined with a rigid aluminum body structure and world-class aerodynamic design, gives the Insight the ability to achieve 70 miles per
gallon of gasoline (EPA highway estimate). Plus, it meets California's stringent Ultra-Low Emission Vehicle (ULEV) standard, making it one of
the world's cleanest, most fuel-efficient gasoline-powered automobiles.
Because its primary motive power comes from its VTEC gasoline engine, the Insight drives just like any other automobile. It has a 10.6-gallon gas tank, and no external power supply is needed for recharging. Batteries are recharged by regenerative braking. Specifically, energy from forward
momentum is captured during braking. This energy is then used to recharge the batteries.
The Insight's lightweight aluminum body and reinforced frame are 47-percent lighter than a comparable steel body and have superior bending and torsional
rigidity. And its highly aerodynamic body has one of the lowest coefficients of drag (0.25) of any mass-produced automobile. source:honda america