Honda's original compact hybrid system uses a gasoline engine as the main source of power with an electric motor providing power assist as needed, resulting in outstanding fuel economy and low emissions. Providing strong power assist at lower speeds, Honda's Integrated Motor Assist (IMA) joins Honda's newly developed 4-cylinder, 16-valve, 1.5-liter i-VTEC engine. Together, they provide maximum torque at 1,000 - 1,500 rpm and strain-free acceleration on into the high rpm range. In combination with the CR-Z's lightweight body, this powertrain produces the acceleration feel of a 2.0-liter gasoline engine while offering outstanding fuel economy of 25 km/L.*
* As tested in 10•15 mode (Japan's Ministry of Land, Infrastructure and Transport calculations).
At low speeds, the 1.5-liter, 16-valve engine features idles one of its two intake valves.The result is ample power combined with enhanced fuel economy and emissions performance. Thanks to idle stop capability, the engine automatically stops when the vehicle stops at a traffic signal or in a traffic jam.
1.5L i-VTEC Engine + Ultra-Thin DC Brushless Motor * Japanese Version
1.5L i-VTEC Engine + IMA * Japanese Version
The engine has a low height, allowing for a low hood and low overall vehicle height. The intake chamber and air cleaner case are flat and follow the lines of the hood, and other parts have been made as compact as possible. As a result, the 1.5-liter engine of the CR-Z is almost as low in height as the 1.3-liter engine of the 2009 Insight.
Reduced Engine Height Exphanation * Japanese Version