Ford focus 2014 Owner's Manual page 129

Calculating Fuel Economy
Do not measure fuel economy during the
first 1000 mi (1,600 km) of driving (this is
the engine break-in period). A more
accurate measurement is obtained after
2500 mi (4,000 km). Also, fuel expense,
frequency of fill ups or fuel gauge readings
are not accurate ways to measure fuel
economy.
1. Fill the fuel tank completely and record
the initial odometer reading.
2. Each time you fill the fuel tank, record
the amount of fuel added.
3. After at least three fill ups, fill the fuel
tank and record the current odometer
reading.
4. Subtract your initial odometer reading
from the current odometer reading.
5. Calculate fuel economy by dividing
miles traveled by gallons used (For
Metric: Multiply liters used by 100, then
divide by kilometers traveled).
Keep a record for at least one month and
record the type of driving (city or freeway).
This provides an accurate estimate of your
vehicle's fuel economy under current
driving conditions. Additionally, keeping
records during summer and winter show
how temperature impacts fuel economy.
In general, your vehicle will use more fuel
in cold temperatures.
Focus (CEW) Vehicles Built From: 08-09-2014, CG3630en enGBR, Edition date: 09/2014, First Printing
Fuel and Refueling
127