Consumer Reports Finds No Power Boost Or Fuel Economy In Premium Gas For Many Vehicles

Consumer Reports says its latest study finds no measurable improvement from using premium gasoline in many vehicles. In tests covering more than 30 recently tested models that require premium—or have restrictions that make it effectively mandatory—there was virtually no difference in acceleration or fuel economy when comparing required premium against regular 87-octane fuel. The group estimates premium can cost drivers over $3,000 more over five years, driven by the typical price gap between octane grades. While some high-performance sports cars may benefit, Consumer Reports argues automakers should avoid prescribing premium without a genuine need and should clarify fuel requirements in owners’ manuals.