The manual says to use “premium” gas, however no octane number is indicated. What octane is best for the 140-cubic-inch, nonturbo engine? Also, a very good mechanic friend in Wisconsin states ...

Pay attention: the list includes some surprises, including versions of cars known for their good gas mileage: Like so many small car gas ... Based on the old-style 2008-2011 Impreza, the WRX ...

I drive an older Ford Excursion ... My advice is to maintain your car, drive the speed limit, and plan your driving as economically as possible. Go easy on the gas and the brakes.