U.S. drivers waste more than $2.1 billion annually on premium gasoline

According to new research from the American Automobile Association, U.S. drivers wasted more than $2.1 billion dollars last year by using premium-grade gasoline in vehicles designed to run on regular fuel.

With 16.5 million U.S. drivers having used premium fuel despite the vehicle manufacturer’s recommendation in the last 12 months, AAA conducted a comprehensive fuel evaluation to determine what, if any, benefit the practice offers to consumers.

After using industry-standard test protocols designed to evaluate vehicle performance, fuel economy and emissions, AAA found no benefit to using premi...