consumption

i only want to spend $1000 and i dont want to take out seats and things like that what are some parts to help me with this cheers

It's a 1994 3 cylinder Geo Metro.

i have recently noticed that MPG on my speedometer is showing some funny measure for example when i reset the trip control the MPG is reset it MPG start from 10 mile per gallon and if i drive in the city it drop down to 8 mile or even 6 mile per gallon(it is not lambo) but if i go to highway...