For the cars that I've tried, obvioulsy I'm very sure. Unless something is wrong with your fuel gauge :X-:
Safer way to find out, whenever the warning light turn on, fill up your tank to maximum. Then compare it with the size of your tank (should be written in the car manual).
For my Waja, Proton wrote 60L. Whenever the light turn on, the maximum I could fill is only around 50L.
For my Kancil, Perodua wrote 32L. Whenever the light turn on, the maximum I could fill is only around 20L.
Safer way to find out, whenever the warning light turn on, fill up your tank to maximum. Then compare it with the size of your tank (should be written in the car manual).
For my Waja, Proton wrote 60L. Whenever the light turn on, the maximum I could fill is only around 50L.
For my Kancil, Perodua wrote 32L. Whenever the light turn on, the maximum I could fill is only around 20L.