AAA Michigan says average gas prices statewide have fallen 9 cents from a week ago to about $2.57 per gallon.
The Dearborn-based auto club said Monday the average price for self-serve regular unleaded is about 37 cents less than a year ago.
The state's highest averages were in the Ann Arbor and Detroit areas at around $2.68. The lowest prices were in the Traverse City area at $2.35 per gallon.
AAA Michigan surveys daily fuel prices at 2,800 gas stations across the state.