AAA Michigan says gasoline prices have fallen roughly 12 cents during the past week to a statewide average of about $3.45 per gallon.
The auto club said Monday the average is about 15 cents per gallon more than last year at this time.
Of the Michigan cities it surveys, AAA Michigan said the cheapest price for self-serve unleaded fuel is in the Saginaw and Bay City areas, where it's about $3.29 a gallon. The highest average is in the Marquette area at about $3.54.
Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.