While there might be variations in the additives and formulations used by different brands, most gasolines are held to the same standards and specifications set by governing bodies such as ASTM International (American Society for Testing and Materials) and federal regulations. These quality and performance standards are stringent and ensure that all gasolines sold in a particular region or country meet certain criteria.
Therefore, in terms of overall performance, fuel efficiency, and meeting vehicle manufacturer requirements, the gasolines from different brands are generally considered to be comparable and equivalent in quality.
