New Car and looking for advice

[oldmopars]

I am new here, but have been trolling for over a year. I just sold my big Cummins Dodge and got a 1998 Kia Sephia.
The Dodge was nice, but was costing me almost $1000 a month in payment ($400), fuel (+/- $500) and insurance ($100) It had to go!
The Kia I got is a 4 door with Automatic but other wise stripped. I know that I will never see the kind of mileage that the Metro/Firefly gets or the Civic and other little 2 doors get, but I would still like to improve it from whatever it currently is.
I have had it for 2 days and have not established a baseline yet, but assume it will be around 30 mpg. I think 35 mpg would be a reasonable goal at first.
Here is the list of planned mods, please let me know if I am tracking right or missing something.
Scan gauge
Full moon hub caps
Full tune-up
Increase tire pressure(within safe limits)
Block part of the grill openings
Add spoiler at front below bumper and maybe side skirts.
fender skirts?

Is there anything I can do at the back of the car seeing as its a sedan? I do not want to add some big coroplast appendage, I want to remain visually conservative.

Thanks for any advice you can give.


1998 Kia Sephia

[GRU]

i haven't been here long but it seems like the biggest/best change you can do is to your driving style. read up on how to drive, when to coast, avoid idling and you will probably see better than 35mpg

[JRMichler]

If I can get 30 MPG out of a crew cab truck with no mods other than tire pressure, you should get well over 35 MPG without mods.

Your largest gains will come from DWL and anticipating traffic so that you don't use your brakes.

[oldmopars]

I have been reading a lot about driving habits and even saw a large increase in mileage on my Cummins, it was just not enough.
My commute is 70 miles round trip, mostly country/rural highways and some interstate(I-5).
I want to get a scan gauge, the MPG display in my Dodge (while not accurate) did help me to know when I was driving good, and when it was bad.
Anyway, any suggestions on how to mod the car would be great.