AAA Michigan says gasoline prices are up about 9 cents per gallon during the past week to a statewide average of $3.51.
The auto club said Monday that the average is 35 cents per gallon higher than last year at this time.
Of the cities it surveys, AAA Michigan says the cheapest price for self-serve unleaded fuel is in the Traverse City area, where it's $3.41 a gallon. The highest average can be found in the Ann Arbor, Benton Harbor and Flint areas at $3.52 to $3.53.
Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.