Number of Motor Vehicles Licensed in Arkansas Utilizing Alternative Fuels (for each type of alternative fuels) 0 — 999 1,000 — 1,499 1,500 — 1,999 2,000 — 2,499 2,500 — 2,999 3,000 & over Tax Rate Per Equivalent Gallon (for each type of alternative fuels) $0.050 $0.085 $0.105 $0.125 $0.145 $0.165