Advanced Technology Partial Zero-Emission Vehicle (AT-PZEV)
The CR-Z was designed to excel at efficiency, so earning Advanced Technology Partial Zero-Emission Vehicle (AT-PZEV) status was a top priority. To achieve AT-PZEV status, a vehicle must be a Super-Ultra-Low-Emission Vehicle (SULEV), carry a compliant warranty on emissions equipment, have zero-evaporative emissions and include advanced technology components.
 AT-PZEV (Advanced Technology Partial Zero-Emission Vehicle) models as certified by California Air Resources Board (CARB) are available in California and states that have adopted California Zero-Emission Vehicle regulations.
The CR-Z is equipped with idle-stop, a feature that temporarily turns off the engine to save fuel and minimize emissions when you come to a halt. Idle-stop occurs automatically on CVT models. For 6-speed models, it occurs when the car is in neutral and pressure is applied to the brakes. You'll know idle-stop is engaged by the flashing green light on the instrument panel. Once you take your foot off the brakes, the engine restarts automatically and seamlessly.
Integrated Motor Assist IMA®
Integrated Motor Assist® (IMA®) couples the i-VTEC® 4-cylinder gasoline engine with a permanent-magnet electric motor, located between the engine and the transmission. The engine alone provides an ample amount of power, but whenever a boost is needed, the electric motor kicks in, giving the CR-Z even more zip.