Gas prices spike in Michigan and metro Detroit to an average of $4.05 per gallon

Drivers throughout metro Detroit are seeing a big jump in gas prices on Monday morning. Prices have been rising for six straight days after declining for nearly 100 days in a row. AAA Michigan said the statewide average is now $3.97 per gallon, which is up 17 cents in the last week and 73 cents higher than this time last year. Prices in metro Detroit are even more – $4.05 per gallon, up 14 cents from a week ago. Since mid-June, prices have been falling. Back then, the average price in Michigan was around $5.22.