2011 Toyota Avalon Owners Manual - Page 115

1-5. Refueling 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. n Fuel types Use unleaded gasoline. (Octane Rating 87 [Research Octane Number 91] or higher) n Fuel tank capacity Approximately 18.5 gal. (70 L, 15.4 Imp.gal.) n When the fuel filler door opener switch is inoperable The lever can be used to open the fuel filler door if the fuel filler door cannot be opened using the inside switch because the battery discharged or for any other reason. 88 AVALON_U (OM41428U)