Transportation: motor fuel tax; areas requiring certain vapor pressure; modify. Amends secs. 3 & 10d of 1984 PA 44 (MCL 290.643 & 290.650d).

Michigan House Bill 6281 amends the Motor Fuels Quality Act to update regulations for gasoline and diesel fuel sold in the state. The bill directs the director of the Department of Environment, Great Lakes, and Energy to establish specific standards for fuel purity, additives, and octane ratings, while mandating a vapor pressure limit of 9.0 psi for most retail outlets during the summer months from June 1 to September 15. It also clarifies that certain counties with stricter air quality requirements must continue using lower vapor pressure fuels of 7.0 or 7.8 psi unless federal and state agencies determine those standards are no longer necessary. Additionally, the legislation permits the year-round sale of E15 fuel, which contains 10.5% to 15% ethanol, provided that dispensing pumps are clearly labeled in accordance with federal law.