This legislation, known as the "Mobile Mammography Promotion Act of 2025," seeks to reduce the financial burden on providers of mobile mammography services by addressing federal motor fuel excise taxes. It proposes amendments to the Internal Revenue Code of 1986 to achieve this goal. Specifically, the bill mandates that the Secretary of the Treasury shall pay a refund, without interest, for the aggregate amount of federal motor fuel excise tax imposed on fuel used in highway vehicles designed exclusively to provide mobile mammography services . Furthermore, it establishes an exemption from retail tax for any liquid sold for use in, or directly used in, these specialized vehicles. These provisions are intended to lower operational costs and potentially enhance access to critical breast cancer screening services.