No power accessories means better mpg's?

Yes, less weight will get you better gas mileage, but what you are talking about is negligible.

An '84 LeSabre with a V8 isn't going to get much better than 16-18mpg combined.

Think of it this way do you get better mpg when you dont have 2 people riding with you? If you do save you wont even notice the difference for the effort really. Better off worrying who has the better gas prices my friend.

There have been people who shut off their air conditioner and roll the windows down

to get better gas mileage but the opposite is true.

With the windows down wind blowing in will end up lowering the mileage.

Vehicles are built to get the best mileage when they are fully equipped.

GEEZE, if MPG and "simplicity" are so all fired important, you should be looking at a small car with a 4 banger engine, like a Corolla.

For a more meaningful improvement, never fill up the tank more than halfway. That's 75 lb of liquid you won't be hauling around. Then again, you'll have to fill up twice as often.

No. It won't make a difference at all.