2015 TOYOTA PRIUS PLUG-IN engine

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6-1. Specifications
6
Vehicle specifications
PRIUS PHV_OM_OM47A11U_(U)
Fuel
Fuel typeUnleaded gasoline only
Octane Rating 87 (Research Octane Number 91) or higher
Fuel tank capacity
(Reference)10.6 gal. (40 L, 8.8 Imp.gal.)
NOTICE
■Notice about fuel
For plug-in hybrid vehicles, fuel may remain in the tank for a long time and
undergo changes in quality depending on the how the vehicle is used.
Refuel at least 5.3 gal.(20 L, 4.4 Imp.gal.) of fuel every 6 months (refuel a
total of at least 5.3 gal. [20 L, 4.4 Imp.gal.] over a 6-month period), as this
may affect components of the fuel system or the gasoline engine.

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6-1. Specifications
PRIUS PHV_OM_OM47A11U_(U)
Electric motor (Traction motor)
Hybrid battery (traction battery)
Lubrication system
*:The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up the engine and turn off the hybrid system, wait more
than 5 minutes, and check the oil level on the dipstick.
TypePermanent magnet motor
Maximum output 60 kW
Maximum torque 153 ft•lbf (207 N•m, 21.1 kgf•m)
TypeLithium-ion battery
Vo l ta g e 3 . 7 V / c e l l
Capacity 21.5 Ah
Quantity 56 cells
Overall voltage 207 V
Oil capacity
(Drain and refill 
reference*)
With filter
Without filter
4.4 qt. (4.2 L, 3.7 Imp.qt.)
4.1 qt. (3.9 L, 3.4 Imp.qt.)

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Vehicle specifications
PRIUS PHV_OM_OM47A11U_(U)
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use
To y o t a a p p r o v e d “ To y o t a G e n u i n e M o t o r O i l ” o r e q u i v a l e n t t o s a t i s f y
the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good
starting in cold weather.
If SAE 0W-20 is not available,
SAE 5W-20 oil may be used.
However, it must be replaced
with SAE 0W-20 at the next oil
change.
Oil viscosity (0W-20 is explained here as an example):
•The 0W in 0W-20 indicates the characteristic of the oil which
allows cold startability. Oils with a lower value before the W allow
for easier starting of the engine in cold weather.
•The 20 in 0W-20 indicates the viscosity characteristic of the oil
when the oil is at high temperature. An oil with a higher viscosity
(one with a higher value) may be better suited if the vehicle is
operated at high speeds, or under extreme load conditions.
Outside temperature

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6-1. Specifications
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Vehicle specifications
PRIUS PHV_OM_OM47A11U_(U)
Cooling system
Ignition system
Capacity
Gasoline
engine7.6 qt. (7.2 L, 6.3 Imp.qt.)
Power
control
unit
2.2 qt. (2.1 L, 1.8 Imp.qt.)
Coolant type
Use either of the following:
•“Toyota Super Long Life Coolant”
•Similar high-quality ethylene glycol-based non-
silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid technol-
ogy
Do not use plain water alone.
Spark plug
Make DENSO SC20HR11
Gap 0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

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Vehicle specifications
PRIUS PHV_OM_OM47A11U_(U)
Fuel information
■Fuel tank opening for unleaded gasoline
To h e l p p r e v e n t i n c o r r e c t f u e l i n g , y o u r v e h i c l e h a s a f u e l t a n k o p e n i n g t h a t
only accommodates the special nozzle on unleaded fuel pumps.
■Gasoline quality
In very few cases, driveability problems may be caused by the brand of gas-
oline you are using. If driveability problems persist, try changing the brand of
gasoline. If this does not correct the problem, consult your Toyota dealer.
Yo u m u s t o n l y u s e u n l e a d e d g a s o l i n e i n y o u r v e h i c l e .
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..

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6-1. Specifications
PRIUS PHV_OM_OM47A11U_(U)
■Gasoline quality standards
●Automotive manufacturers in the U.S.A., Europe and Japan have devel-
oped 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 emis-
sion 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 gasoline containing detergent additives
●To y o t a r e c o m m e n d s t h e u s e o f g a s o l i n e t h a t c o n t a i n s d e t e r g e n t a d d i t i v e s
to avoid the build-up of engine deposits.
●All gasoline sold in the U.S.A. contains minimum detergent additives to
clean and/or keep clean intake systems, per EPA’s lowest additives con-
centration program.
●To y o t a s t r o n g l y r e c o m m e n d s t h e u s e o f To p T i e r D e t e r g e n t G a s o l i n e . F o r
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.
To y o t a r e c o m m e n d s t h e u s e o f c l e a n e r b u r n i n g g a s o l i n e a n d a p p r o p r i a t e l y
blended reformulated gasoline. These types of gasoline provide excellent
vehicle performance, reduce vehicle emissions and improve air quality.

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Vehicle specifications
PRIUS PHV_OM_OM47A11U_(U)
■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.
●To y o t a d o e s n o t r e c o m m e n d t h e u s e o f g a s o l i n e c o n t a i n i n g m e t h a n o l .
■Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methyl-
cyclopentadienyl Manganese Tricarbonyl).
To y o t a d o e s n o t r e c o m m e n d t h e u s e o f g a s o l i n e t h a t c o n t a i n s M M T. I f f u e l
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.
●Yo u m a y o c c a s i o n a l l y n o t i c e l i g h t k n o c k i n g f o r a s h o r t t i m e w h i l e a c c e l e r -
ating or driving uphill. This is normal 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
containing more than
15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

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PRIUS PHV_OM_OM47A11U_(U)
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 using a different type of fuel (poor hot
starting, vaporization, engine knocking, etc.), discontinue the use of that type
of fuel.
■When refueling with gasohol
Ta k e c a r e n o t t o s p i l l g a s o h o l . I t c a n d a m a g e y o u r v e h i c l e ’ s p a i n t .
■Notice about fuel
For plug-in hybrid vehicles, fuel may remain in the tank for a long time and
undergo changes in quality depending on the how the vehicle is used.
Refuel at least 5.3 gal. (20 L, 4.4 Imp.gal.) of fuel every 6 months (refuel a
total of at least 5.3 gal. [20 L, 4.4 Imp.gal.] over a 6-month period), as this
may affect components of the fuel system or the gasoline engine.