Toyota Yaris Sedan 2008 Quick Reference Manual page 72

1-5. Refueling
Closing the fuel tank cap
Fuel types
n
Unleaded gasoline. (87 Octane Rating [Research Octane Number 91] or
higher)
Fuel tank capacity
n
Approximately 11.1 gal. (42.0 L, 9.2 Imp. gal.)
56
Hang the fuel tank cap on the
back of the fuel filler door.
When replacing the fuel tank
cap, turn it until a clicking sound
is heard.
After releasing your hand, the cap
will turn slightly to the opposite
direction.