jerrye, people come here on a very regular basis talking about gas mileage issues. Nine times out of 10 it turns out that a) they are not using a good method for really figuring out their mileage, and b) have inflated notions in their heads about what their mileage should be. So you have to realize that the first - and perfectly reasonable thing to do is find out what your gas mileage actually is.
Now, in order to figure that out, the first thing one needs to know is the very specific model of the car. You showed up reporting nothing but a Malibu classic. Great. I think those first appeared in 1977. Ok fine - so after something like 10 posts we have that nailed down.
Next - measure your actual gas mileage. You need to be able to say what kind of mileage you actually hetting.
Then, when you can report that tell everyone everything you know about the state of things with the car. How many miles are on it? How old are the spark plugs and wires? Filters? Cooling system service? In general, what has your approach to maintenance been since you’ve owned it? Anything overdue? Is there a check engine light on by chance?
No one is scolding you jerrye. There is absolutely no way to have a conversation about your gas mileage if all you can do is show up and say you have a malibu that is drinking gasoline. There is no way to judge that statement/belief, nor is there any way to know where to start.