AAA Michigan says gasoline prices are up 2 cents per gallon over the past week to a statewide average of $2.64.
The auto club said Monday the statewide average is $1.55 per gallon lower than last year at this time.
Of the cities it surveys, AAA Michigan says the cheapest price for self-serve regular fuel is in the Detroit area, where it's $2.60 a gallon. The highest average can be found in the Marquette area at $2.79.
The statewide average for biodiesel is $2.61 and $2.34 for ethanol.
Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.