Gasoline prices have risen sharply, with a nearly 30 cent increase in just one week. This brings the average cost to around $4.31 per gallon. Compared to last year, drivers are paying about $1 more per gallon.

The cost to fill a 15-gallon tank is roughly $65, which is significantly higher than last August's peak. Some areas have higher average prices, while others are slightly lower.

Further information on gas prices is available, including specific averages for certain cities, such as Ann Arbor and Traverse City.