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E85 Flexible Fuel

E85 Fuel is a lot cheaper per gallon than regular gasonline, but there is a catch, the fuel efficiency, or miles per gallon is reduced on average by 25%. So in the end, it will cost you more money to use E85 in your vehicle. See the chart below to compare E85 vehicles with different fuels.

What is E85? E85 is an alcohol fuel mixture of 85% ethanol and 15% gasoline, by volume. E85 is usually used in engines modified to accept higher concentrations of ethanol. Such flexible-fuel engines are designed to run on any mixture of gasoline or ethanol with up to 85% ethanol by volume. The primary differences from non-FFVs is the elimination of bare magnesium , aluminum , and rubber parts in the fuel system, the use of fuel pumps capable of operating with electrically-conductive (ethanol) instead of non-conducting dielectric (gasoline) fuel, specially-coated wear-resistant engine parts, fuel injection control systems having a wider range of pulse widths (for injecting approximately 30% more fuel), the selection of stainless steel fuel lines (sometimes lined with plastic), the selection of stainless steel fuel tanks in place of terne fuel tanks, and, in some cases, the use of acid-neutralizing motor oil. For vehicles with fuel-tank mounted fuel pumps, additional differences to prevent arcing , as well as flame arrestors positioned in the tank's fill pipe, are also sometimes used.

2007 Flexible Fueled Vehicles * This chart based on Gasoline at $3.00/gallon, Premium $3.20, Diesel $2.95, and E85 $2.43.   MPG Annual Fuel Cost Greenhouse Gas Emissions (tons/yr)   Fuel Type City Highway Chevrolet Monte Carlo 6 cyl, 3.5 L, Auto(4), 400-425, Gasoline or E85 Gas 21 31 $1800 7.4 E85 16 23 $1917 6.0         Chevrolet Impala 6 cyl, 3.5 L, Auto(4), 400-425, Gasoline or E85 Gas 21 31 $1877 7.5 E85 16 23 $1917 6.0         Mercedes-Benz C230 6 cyl, 2.50 L, Auto(L7), GAS 420, Premium or E85 Premium 19 25 $2184 8.4 E85 14 18 $2278 6.9         Mercedes-Benz C230 6 cyl, 2.50 L, Man(6), GAS 400, Premium or E85 Premium 19 25 $2285 8.7 E85 14 18 $2278 7.0         Chevrolet Uplander FWD 6 cyl, 3.90 L, Auto(4), FFV, Gasoline or E85 Gas 18 25 $2142 8.9 E85 13 19 $2431 7.3         Ford Crown Victoria 8 cyl, 4.6 L, Auto(4), RNG=380, Gasoline or E85 Gas 17 25 $2250 9.4 E85 13 17 $2603 7.7         Mercury Grand Marquis 8 cyl, 4.6 L, Auto(4), RNG=380, Gasoline or E85 Gas 17 25 $2250 9.4 E85 13 17 $2603 7.7         Lincoln Town Car 8 cyl, 4.6 L, Auto(4), RNG=380, Gasoline or E85 Gas 17 25 $2250 9.4 E85 13 17 $2603 7.7         Chevrolet Tahoe 1500 2WD 8 cyl, 5.3 L, Auto(4), Gasoline or E85 Gas 16 21 $2502 10.3 E85 12 16 $2803 8.4         GMC Yukon 1500 2WD 8 cyl, 5.3 L, Auto(4), Gasoline or E85 Gas 16 21 $2502 10.3 E85 12 16 $2803 8.4         GMC Sierra Classic 1500 2WD 8 cyl, 5.3 L, Auto(4), 440-580, Gasoline or E85 Gas 16 21 $2646 10.5 E85 12 16 $2803 8.4         Chevrolet Silverado Classic 1500 2WD 8 cyl, 5.3 L, Auto(4), 440-580, Gasoline or E85 Gas 16 21 $2646 10.5 E85 12 16 $2803 8.4         Chevrolet Avalanche 1500 2WD 8 cyl, 5.3 L, Auto(4), 530, Gasoline or E85 Gas 15 21 $2646 10.3 E85 12 16 $2803 8.4         Chevrolet Suburban 1500 2WD 8 cyl, 5.3 L, Auto(4), Gasoline or E85 Gas 15 21 $2646 10.3 E85 12 16 $2803 8.4         GMC Yukon XL 1500 2WD 8 cyl, 5.3 L, Auto(4), Gasoline or E85 Gas 15 21 $2646 10.3 E85 12 16 $2803 8.4         Chevrolet Tahoe 1500 4WD 8 cyl, 5.3 L, Auto(4), Gasoline or E85 Gas 15 21 $2646 10.6 E85 11 15 $2803 8.6         GMC Yukon 1500 4WD 8 cyl, 5.3 L, Auto(4), Gasoline or E85 Gas 15 21 $2646 10.6 E85 11 15 $2803 8.6         GMC Savana 1500/2500 2WD (cargo) 8 cyl, 5.3 L, Auto(4), 440-580, Gasoline or E85 Gas 15 20 $2646 10.5 E85 12 16 $2803 8.4         Chevrolet Van 1500/2500 2WD 8 cyl, 5.3 L, Auto(4), 440-580, Gasoline or E85 Gas 15 20 $2646 10.5 E85 12 16 $2803 8.4         Chevrolet Avalanche 1500 4WD 8 cyl, 5.3 L, Auto(4), Gasoline or E85 Gas 15 20 $2646 10.6 E85 11 15 $2803 8.6         Chevrolet Suburban 1500 4WD 8 cyl, 5.3 L, Auto(4), 530, Gasoline or E85 Gas 15 20 $2646 10.6 E85 11 15 $2803 8.6         GMC Yukon XL 1500 4WD 8 cyl, 5.3 L, Auto(4), 530, Gasoline or E85 Gas 15 20 $2646 10.6 E85 11 15 $2803 8.6         GMC Sierra Classic 1500 4WD 8 cyl, 5.3 L, Auto(4), 420-540, Gasoline or E85 Gas 15 19 $2813 11.4 E85 11 14 $3036 9.1         Chevrolet Silverado Classic 1500 4WD 8 cyl, 5.3 L, Auto(4), 420-540, Gasoline or E85 Gas 15 19 $2813 11.4 E85 11 14 $3036 9.1         Chevrolet Van 1500/2500 AWD 8 cyl, 5.3 L, Auto(4), 420-540, Gasoline or E85 Gas 14 18 $2813 11.5 E85 11 14 $3036 9.1         GMC Savana 1500/2500 AWD (cargo) 8 cyl, 5.3 L, Auto(4), 420-540, Gasoline or E85 Gas 14 18 $2813 11.5 E85 11 14 $3036 9.1         Chevrolet Van 1500 AWD Conversion 8 cyl, 5.3 L, Auto(4), 500, Gasoline or E85 Gas 14 18 $2813 11.8 E85 10 13 $3036 9.6         Chevrolet Express 1500 AWD 8 cyl, 5.3 L, Auto(4), 500, Gasoline or E85 Gas 14 18 $2813 11.8 E85 10 13 $3036 9.6         GMC Savana 1500 AWD Conversion (cargo) 8 cyl, 5.3 L, Auto(4), 500, Gasoline or E85 Gas 14 18 $2813 11.8 E85 10 13 $3036 9.6         GMC Savana 1500 AWD (Passenger) 8 cyl, 5.3 L, Auto(4), 500, Gasoline or E85 Gas 14 18 $2813 11.8 E85 10 13 $3036 9.6         GMC Savana 15/25 2WD Conversion (cargo) 8 cyl, 5.3 L, Auto(4), 460, Gasoline or E85 Gas 14 18 $3002 12.0 E85 10 13 $3313 9.7         Chevrolet Van 15/25 2WD Conversion 8 cyl, 5.3 L, Auto(4), 460, Gasoline or E85 Gas 14 18 $3002 12.0 E85 10 13 $3313 9.7         Chevrolet Express 1500/2500 2WD 8 cyl, 5.3 L, Auto(4), 460, Gasoline or E85 Gas 14 18 $3002 12.0 E85 10 13 $3313 9.7         GMC Savana 1500/2500 2WD (Passenger) 8 cyl, 5.3 L, Auto(4), 460, Gasoline or E85 Gas 14 18 $3002 12.0 E85 10 13 $3313 9.7