More Good News For Motorists This Week. Gas Prices Have Now Dropped To A Five Week Low. This After Declining Non-Stop For The Past Month. AAA Auto Club Says Tennessee Gas Prices Are Averaging $2.26 A Gallon, Which Is A Decline Of Two And A Half Cents During The Past Week. In Tennessee, Drivers Are Paying On Average $2.25. Stephanie Milani With AAA Says Seasonal Trends Like Reduced Gas Demand And Increased Fuel Supply Are Allowing Pump Prices To Keep Moving Lower.