octane TOYOTA PRIUS PLUG-IN HYBRID 2023 Owners Manual

7169-1. Specifications
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
■Engine number
The engine number is stamped
on the engine block as shown.
Engine
Model2ZR-FXE
Ty p e4-cylinder in line, 4-cycle, gasoline
Bore and stroke80.5  88.3 mm (3.17  3.48 in.)
Displacement1798 cm3 (109.7 cu.in.)
Valve clearanceAutomatic adjustment
Fuel
Fuel type
When you find these types of fuel label at
the gas station, use only the fuel with one of
the following labels.

EU area:
Unleaded gasoline conforming to European
standard EN228 only
Except EU area:
Unleaded gasoline only
Research Octane Number95 or higher
Fuel tank capacity
(Reference)43 L (11.4 gal., 9.5 lmp.gal.)

7249-1. Specifications
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Fuel infor mation
■Use of ethanol blended gasoline in a gasoline engine
Toyota allows the use of ethanol blended gasoline where the ethanol content
is up to 10%. Make sure that the ethanol blended gasoline to be used has a
Research Octane Number that follows the above.
■If your engine knocks
●Consult any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
●You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is normal and there is no need for concern.
When you find these types of fuel label at the gas station, use
only the fuel with one of the following labels.

EU area:
You must only use unleaded gasoline conforming to European
standard EN228.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.
Except EU area:
You must only use unleaded gasoline.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.