AAA Michigan says gasoline prices have fallen about 14 cents during the past week to a statewide average of about $3.17 per gallon.
The auto club said Monday the average is about 30 cents per gallon less than this time last year.
Of the cities it surveys, AAA Michigan says the cheapest price for self-serve unleaded fuel is in the Benton Harbor area, where it's about $3.08 a gallon. The highest average is in the Marquette area at about $3.29 a gallon.
Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.