Michigan drivers are paying an average of $3.15 per gallon for regular unleaded gas, according to this week's report from AAA-The Auto Club Group. This is up 12 cents from the previous week. In metro Detroit,

Average gas prices in and around Grand Rapids are up by 9.9¢ since last week, according to fuel surveyors, GasBuddy — 3.5¢ above the national average.

The GasBuddy survey found the cheapest station in Toledo was priced at $2.61/gallon, while the most expensive was $3.30/gallon. Statewide, the range was $2.49/gallon to $4.11/gallon from least expensive to most expensive.

In the Gem State, the lowest-priced station was $2.29 per gallon, whereas the most expensive station was $4.04 per gallon, a difference of $1.75 per gallon. The national average for a gallon of gas has dropped roughly six cents, with a new average price of $3.09 per gallon.

The price is 8 cents more than this time last month and 11 cents more than a year ago, according to the group.

The average gas prices in Baltimore have risen 25.6 cents a gallon in the past week, according to GasBuddy's recent survey.Prices in Baltimore are 51.6 cents a

The average price of a gallon of self-serve regular gasoline in San Diego County rose 1 cent Friday to $4.538, a day after rising 2 cents.