2015 TOYOTA PRIUS C octane

214
PRIUS c_U (OM52E68U)
4-4. Refueling
●Vehicles without a smart key system:
Turn the engine switch off and ensure that all the doors and win-
dows are closed.
Vehicles with a smart key system:
Turn the “POWER” switch off and ensure that all the doors and win-
dows are closed.
● Confirm the type of fuel.
■Fuel types
Unleaded gasoline (Octane rating 87 [Research Octane Number 91] or
higher)
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle

4929-1. Specifications
PRIUS c_U (OM52E68U)■
Engine number
The engine number is stamped
on the engine block as shown.
Engine
Model
1NZ-FXE
Type 4-cylinder in line, 4-cycle, gasoline
Bore and stroke 2.95  3.33 in. (75.0  84.7 mm)
Displacement 91.3 cu.in. (1497 cm3)
Valve clearance
(engine cold) Intake: 0.006
 0.010 in. (0.15  0.25 mm)
Exhaust: 0.010  0.014 in. (0.25  0.35 mm)
Fuel
Fuel type Unleaded gasoline only
Octane rating87 (Research octane number 91) or higher
Fuel tank capacity
(Reference)9.5 gal. (36 L, 7.9 Imp. gal.)
Electric motor (traction motor)
Type
Permanent magnet synchronous motor
Maximum output 45 kW
Maximum torque 125 ft•lbf (169 N•m, 17.2 kgf•m)

4999-1. Specifications
9
Vehicle specifications
PRIUS c_U (OM52E68U)
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
■ 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 call ed the World-Wide Fuel Charter (WWFC),
which is expected to be applied worldwide.
● The WWFC consists of four categorie s 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.
■ Recommendation of the use of gaso line containing detergent additives
● Toyota recommends the use of gasoline that contains detergent additives to
avoid the build-up of engine deposits.
● All gasoline sold in the U.S.A. co ntains minimum detergent additives to
clean and/or keep clean intake systems, per EPA’s lowest additives concen-
tration program.
● Toyota strongly recommends the use of Top Tier Detergent Gasoline. For
more information on Top Tier Detergent Gasoline and a list of marketers,
please go to the official website www.toptiergas.com.
■ Recommendation of the use of cleaner burning gasoline
Cleaner burning gasoline, including reformulated gasoline that contains oxy-
genates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in
many areas.
Toyota recommends the use of cleaner burning gasoline and appropriately
blended reformulated gasoline. These ty pes of gasoline provide excellent
vehicle performance, reduce vehicle emissions and improve air quality.
Fuel infor mation
You must only use unleaded gasoline in your vehicle.
Select octane rating 87 (Research Octane Number 91) or higher.
Use of unleaded gasoline with an octane rating lower than 87
may result in engine knocking. Persistent knocking can lead to
engine damage.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A..

5009-1. Specifications
PRIUS c_U (OM52E68U)■
Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octane rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methanol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adversely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If this
happens, contact your Toyota dealer for service.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is nor mal and there is no need for concern.
●
Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from any pump labeled
E30, E50, E85 (which are only some
examples of fuel containing more than
15% ethanol).
DO NOT use gasoline contain-
ing more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

5019-1. Specifications
9
Vehicle specifications
PRIUS c_U (OM52E68U)
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper fuels are used, the engine will be
damaged.
● Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic
converters causing the emission control system to malfunction.
● Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performance
problems.
● Using unleaded gasoline with an octane number or rating lower than the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■ Fuel-related poor driveability
If poor driveability is encountered after us ing a different type of fuel (poor
hot starting, vaporization, engine knocking, etc.), discontinue the use of that
type of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle's paint.