AAA Michigan says gasoline prices have fallen about 15 cents during the past week to a statewide average of about $3.43 per gallon.
The auto club said Monday the average is about 46 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 Saginaw/Bay City area, where it's about $3.34 a gallon. The highest average is in the Ann Arbor and Marquette areas at about $3.48 a gallon.
Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.