Mercury 1996 Sable Manual page 298

2. Then, every time you buy fuel, fill the tank
completely and write down the number of
miles (kilometers) that you have driven and
the number of gallons (liters) of fuel that
you buy.
Keep a record for at least a month. This will
give you a more accurate estimate than
figuring the fuel economy based on only one
or two readings.
3. Divide the total number of miles that you
have driven by the total number of gallons
that your vehicle has used. In metric,
multiply the number of liters used by 100
and divide the answer by the number of
kilometers traveled. This will give you the
number of liters used per 100 km.
Comparisons With EPA Fuel Economy
Estimates
EPA fuel economy figures are obtained from
laboratory tests under simulated road conditions
and thus are estimates which may not reflect the
actual conditions you experience or your style of
driving. In addition to your individual driving
habits, optional equipment such as air
conditioning can have substantial effects on fuel
economy. Other factors that may affect fuel
economy include vehicle load and tire inflation
pressure. The EPA fuel economy estimate is not
a guarantee that you will achieve the fuel
economy shown.
Improving Fuel Economy
Fuel economy is affected by a number of
variables which can reduce efficiency. You can
improve fuel economy by understanding these
variables and minimizing their effect.
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