In a week I would drive so many miles its not funny. The average miles I would drive in a work day is 30 miles so 30 miles times 7 equals 210 miles. So I get 9 mpg so 210 divide by 9 equals 23.3 gallons a week. With gas at 2.75, 23.3 times 2.75 equals 64.08 a week. I would definately change to a hybrid.