Yes you can on some vehicles, you just need to disable or remove the latch that holds the cover closed. Some vehicles if you do this the cover will just stay open because of the spring that helps to open it once you pull the release lever.
Have someone trigger the release inside the passenger compartment while someone else is prying the gas tank cover with a screwdriver.
There is no interior release button... just push the gas cap cover and the 18.5 gallon gas tank becomes accessible to anyone.
You will find that info in the owner/driver's manual.
Read your owners manual.
You open the petrol tank cover in volks wagon polo trendy by pressing the button to release the fuel cap.
Push the right side of the fuel-tank cover (which is round) and it pops open.
If you want to make a quick fix on the gasoline tank, you must make a paste of soap and then cover the hole with it will work.
passenger side under the glove box
Most people use a glass or clear plastic cover over their tank to stop escapes.
there is no latch inside the vehicle. When the doors are unlocked, push on the left side of the tank cover and it will spring open.
A diagram of the fuel lines to a fuel tank on a 1978 CJ5 Jeep can be found in an automobile repair manual. Both Hayes and Chilton make this type of manual.
Below steering column on console panel, above brake pedal