Baseline vehicle sales mix for fleet model. Data from Chow et al.		Vehicle sales mix for fleet model including high-octane (HO) vehicles. Data from Chow et al.

Offering a higher-octane fuel to the consumer market in the US as the standard grade could deliver an incremental 4.5% to 6% reduction in fleet fuel consumption and greenhouse gas emissions by 2040, on top of a projected 26.8% reduction by then in the baseline case (i.e., without higher octane fuel, but with other projected vehicle and powertrain technology improvements), according to a new analysis by a team at MIT.