TOYOTA 2010 Prius - Manual (Page 132)

105
1-6. Refueling
1
Before driving
Closing the fuel tank cap
After refueling, turn the fuel tank
cap clockwise until you hear a
click. The cap will revolve slightly
in the opposite direction once
released.
■
Fuel types
Use unleaded gasoline. (Octane Rating 87 [Research Octane Number 91] or
higher)
■
Fuel tank capacity
Approximately 11.9 gal. (45 L, 9.9 Imp. gal.)