Gas prices are nearing $3.00 a gallon in North Carolina, fueling more frustration at the pump. The average price in the state right now is $2.95 a gallon. That's 63 cents more per gallon than it was at this time last year. So just how much is that costing you? Let's take a vehicle that gets an average of 20 miles per gallon and uses 600 gallons of gas a year, what an average motorist typically uses. At last July's price a year's worth of fuel would have cost $1, 392. A year of gas at this July's prices would cost $1,770, or $378 more.