Honda Insight (2010) i-VTEC engine Performance. All Insights are powered by an advanced 1.3-liter SOHC aluminum-alloy i-VTEC engine and CVT, along with a new generation of Honda's IMA hybrid system for exceptional fuel economy and fun-to-drive performance. The Honda Insight's IMA system incorporates a 10-kilowatt (13 hp) electric motor and a compact Intelligent Power Unit (IPU) - recapturing and storing kinetic energy from vehicle braking and deceleration and supplying additional power for acceleration when needed. Packaging of the ultra-compact IMA battery and IPU in the vehicle's rear floor allows the enhanced utility of a 60/40 split and fold-down rear seat back. The Insight's IMA system has the capability to operate exclusively on electric power in certain low- to mid-speed driving conditions. It also provides for cylinder deactivation within the gasoline engine during deceleration and for engine shutoff when the vehicle is stopped. With a 10.6-gallon fuel tank, the Honda Insight delivers an estimated maximum driving range in excess of 400 miles.