A Partial Zero Emissions Vehicle's a vehicle that's zero evaporative emissions from its fuel system, has a 15 year (or at least 150,000 mile) warranty and meets SULEV tailpipe emission standards. Definition and history PZEVs have their own administrative category within the state of California for low emission vehicles. This vehicle category was created as part of a bargain with the California Air Resources Board (CARB), so that the automobile manufacturers could postpone producing mandated ze… (More on At-pzev)