Hi All,
It has been discussed b4 here, where most of our needle will drop faster fr Full tank to middle, b4 slowdown to empty. Eg. for mine, 1/4 = ~80km, 1/2 = ~200km, 3/4 = ~350km, Near Empty ~470km. Few of us hv complained to TCM, nothing much they can do, altho TC tried to adjust (tink the Float sensor inside the fuel tank). One main reason they said is becos of the tank design (bottle neck which is more narrow on top, therefore needle drops faster during the begining).
More accurate/important is to monitor fr full tank to the empty light on, to calculate ur overall mileage. If there is any major changes in this, then u hv to check wat is causing it. :)