Mazda also will debut the 2008 Mazda Tribute HEV. The heavily revised Tribute HEV will be the first environmentally friendly vehicle Mazda will sell to the public when it becomes available later in the year. With a combined power output of its gasoline engine and electric motor of 155 HP, the Tribute HEV meets strict Super Ultra Low Emissions Vehicle (SULEVII) and Advanced Technology Partial Zero Emissions Vehicle (AT-PZEV) standards in California, the strictest emissions regulations for a petrol vehicle.