Lexus IS250 2006 Owner's Manual page 70

1-5. Refueling
Closing the fuel tank cap
Fuel types
■
Use unleaded gasoline. (91 Octane rating [Research Octane Number 96] or
higher)
Fuel tank capacity
■
Approximately 17.2 gal. (65 L, 14.3 Imp. gal.)
When the fuel filler door opener is inoperable
■
52
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.
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 is
discharged or for any other reason.