Ahead of Independence Day, Michigan gas prices up 9 cents since last week

Michigan gas prices increased by 9 cents since last week, averaging $4.10/gallon for regular unleaded fuel. Prices are up 82 cents compared to this time last year, with a 15-gallon tank now costing $62 on average. Metro Detroit prices rose to $4.14/gallon, while areas like Marquette remain the cheapest at $3.72/gallon.