Tennessee Gas Prices Have Drifted Lower. According To Triple-A, Prices In Tennessee Declined Two Cents Last Week To $2.61 Per Gallon, But Tennessee Motorists Are Still Paying 47 Cents More Than This Time Last Year. Prices Declined Last Week After Crude Inventories Grew And Gasoline Supplies Remained Stable , Despite Strong Demand. Prices Are Expected To Remain Steady For Awhile.