1. Missouri – Regular: $2.209, Mid-grade: $2.445, Premium: $2.721, Diesel: $2.671
When it comes to putting gas in your car or bike, believe it or not, but you may have to cross state lines to get the best price. AAA keeps track of the average price of regular, mid-grade, premium, and diesel gas in all 50 states. The averages are updated daily, so you can always know whether you’re scoring the best possible deal in your state. As of January 6, 2020, the national average price of gas in the US is $2.584. Many states across America, however, have average prices much lower than that. To find the cheapest states to get gas, we looked at the average prices to get regular gas in states that fell below the national average. We also included the prices for mid-grade, premium, and diesel gas in those states. Here are the cheapest states to get gas, listed in order of highest average price for regular gas to lowest.