Poor gas Milage?

[Nik]

Hey guys,

I own an 2000 4.4 and I know that it doesn't do much Miles Per Galon, However from reading here I think mine is still wierd.
When driving normal, not fast... and watching my MPG I get 12.3 MAX... Just interested that when driving without A/C on, and not pushing the GAS pedal, why do I not get more? Is it normal? I do city driving alot. but drove on Highway and still about the same...
I haven't changed Fuel filter or Air Filter since I bought it, I'ts been 2 months now. and from looking at it car doesn't seem that it's been taken good care of...