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8-1. Specifications
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■ Identifying flex-fuel vehicles
■ Gasoline quality
In very few cases, driveability problems may be caused by the brand of gaso-
line you are using. If driveability problems persist, try changing the brand of
gasoline. If this does not correct the problem, consult your Toyota dealer.
■ Gasoline quality standards
● Automotive manufacturers in the U.S.A., Europe and Japan have developed
a specification for fuel quality called the World-Wide Fuel Charter (WWFC),
which is expected to be applied worldwide.
● The WWFC consists of four categories that are based on required emission
levels. In the U.S., category 4 has been adopted.
● The WWFC improves air quality by lowering emissions in vehicle fleets, and
improves customer satisfaction through better performance.
■ E85 fuel (Flex-fuel engine)
● E85 fuel is a blend of 85% ethanol and 15% gasoline. However, E85 does
not necessarily contain 85% ethanol. For example, in cold climates the etha-
nol content of E85 may be reduced during the winter months to maintain
cold weather starting performance.
● E85 has less energy per gallon than gasoline, so you will need to fill your
fuel tank more frequently when using E85.
● The number of fuel stations that sell E85 fuel is limited. For more information
about fueling stations, please refer to the U.S. Department of Energy Web
site.
http://www.afdc.energy.gov/afdc/locator/stations/
Flex-fuel vehicles can be identified by the
fuel tank cap, which is marked
“FLEX-FUEL E85/GASOLINE”.