SouthernRex

I deleted my windshield wiper fluid reservoir (which was full and felt kind of heavy, in retrospect I could have just... drained it. I wanted to clean it up, anyway), as well as my back seats, including the bench and seatbelt assembly thing. I removed the spare tire and jack as well. I was hoping for 0.5MPG gain from this (assuming, theoretically, the same driving style/RPM/speed).

5.0 LsX

iTrader: (7)

Buy a prius

G Atsma

Why do all those things to gain a measly .5 mpg? So now you can have no more than one passenger, can't wash your windshield on the go, can't replace a flat, all for .5 mpg? Backwards thinking...
5.0LsX makes a point.....
Best mileage pointer? Keep your foot out of it... So why do you own a Camaro (or Firebird)??

SouthernRex

I don't use the windshield wiper spray on any car, ever, so that was a no-brainer for me. The backseats will go back in eventually. I'll buy a more fuel efficient car down the road, but right now this is my DD. I'd rather clean vomit with my tongue than own a Prius, but something along those lines in the future as a DD so this can be my weekend toy, again.

Meanwhile, I need to squeeze as much MPG as I can out of this car. I'm not going to remove anything that is safety-related like a sway-bar, but I don't need backseats in the near future.

G Atsma

Your biggest gains will be from making your engine/drivetrain as efficient as possible. Stripping parts out of your car will have minimal effect, unless the weight adds up into the hundreds. See where you can improve the exhaust system, keep the tires aired up to max permissible psi, keep it clean(a dirty car makes more aerodynamic drag), and mostly, keep your foot out of it as much as possible.