Calculating Fuel Economy - Ford Mustang Owner's Manual

beverage. In sensitive individuals, serious
personal injury or sickness could result. Consult
a physician promptly if you experience an
adverse reaction.
Running Out of Fuel
NOTE: Avoid running out of fuel because this
situation may have an adverse effect on
modern powertrain components.
You may need to crank the engine several times
before the fuel system starts to pump fuel from
the tank to the engine.

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. Fill the fuel tank completely and record the
initial odometer reading.
2. Every time you buy fuel, record the
amount (in gallons or liters) purchased.
3. After at least 3-5 tankfuls, fill the fuel tank
and record the final odometer reading.
4. Use these equations to calculate your fuel
economy:
English: MPG = (total miles driven)
(gallons used)
Metric: L/100k = (liters used)
(100 kilometers)
250