1996 Ford Crown Victoria Owner's Manual - Page 260

Calculating Fuel Economy Fuel economy is an estimate of the efficiency of your vehicle, and can be calculated as Miles Per Gallon (MPG) or Liters Per 100 Kilometers (L/100K). Do not calculate fuel economy during your vehicle's break-in period. This would not be an accurate estimate of how much fuel your vehicle will normally use. To calculate fuel economy: 1. 2. 3. 4. Fill the fuel tank completely and record the initial odometer reading. Every time you buy fuel, record the amount (in gallons or liters) purchased. After at least 3-5 tankfuls, fill the fuel tank and record the final odometer reading. Use these equations to calculate your fuel economy: (gallons used) u English: MPG = (total miles driven) u Metric: L/100k = (liters used) (100 kilometers) Comparisons With EPA Estimates EPA fuel economy figures are obtained from laboratory tests under simulated road conditions and may not reflect the actual conditions you experience or your style of driving. The EPA fuel economy estimate is not a guarantee that you will achieve the fuel economy shown. 244