A bill for an act relating to the compatibility of passenger vehicles rented or leased by the state with biodiesel blended fuel classified as B-20 or higher, and including applicability provisions.

This bill requires the state of Iowa to only rent or lease passenger vehicles with diesel engines that manufacturers confirm can run on biodiesel blends of 20% or higher (B-20+). It directly affects private companies bidding on state vehicle rental or leasing contracts by mandating they provide manufacturer certification of this compatibility. The requirement applies to all new or renewed contracts starting July 1, 2026, extending an existing rule currently used for state vehicle purchases. This ensures state-leased vehicles are compatible with higher-blend biodiesel fuel without altering vehicle performance standards.