GASOLINE
Return on Investment (in Years)
         
Miles Driven Per year
MPG 15,000 20,000 25,000 30,000 40,000
25 6.9 5.1 4.1 3.4 2.6
20 5.5 4.1 3.3 2.7 2.1
15 4.1 3.1 2.5 2.1 1.5
10 2.7 2.1 1.6 1.4 1.0
Fuel Savings per Month
Miles Driven Per year
MPG 15,000 20,000 25,000 30,000 40,000
25 $85 $113 $141 $169 $225
20 $106 $141 $176 $211 $282
15 $141 $188 $235 $282 $376
10 $211 $282 $352 $423 $563
Estimated Cost of Conversion $7,000
Cost of Gasoline (Gal) $3.33
Cost of CNG (Equivalent Gal) $1.64
DIESEL - Pick-up Truck
Return on Investment (in Years)
         
Miles Driven Per year
MPG 20,000 30,000 40,000 50,000 60,000
25 8.9 5.9 4.4 3.5 3.0
20 7.1 4.7 3.5 2.8 2.4
15 5.3 3.5 2.7 2.1 1.8
10 3.5 2.4 1.8 1.4 1.2
7 2.5 1.7 1.2 1.0 0.8
Fuel Savings per Month
Miles Driven Per year
MPG 20,000 30,000 40,000 50,000 60,000
25 $70 $105 $139 $174 $209
20 $87 $131 $174 $218 $261
15 $116 $174 $232 $290 $348
10 $174 $261 $348 $435 $523
7 $249 $373 $498 $622 $746
Estimated Cost of Conversion $7,400
Cost of Diesel (Gal) $3.73
Cost of CNG (Equivalent gal) $1.64