Motorists in Michigan are finding the average price of a gallon of gas is 7.3 cents higher than last week. AAA reports that Michigan’s current statewide average is $3.38 per gallon, 10 cents more than this same time last year. The highest average was found in Benton Harbor, Saginaw, Lansing and Traverse City at $3.41. The lowest average was found in Metro Detroit at $3.32 per gallon.