with my SE, keeping my rpms around 1300 RPMs (about 50) i get MUCH better gas mileage than at 1500 and above, usually around 55-60

Yes, set pressure cold.

The pressure on the side wall is the max pressure the tire is designed for, not the recommended pressure.
There is normally a label on one of the door pillars that has the recommended cold inflation pressures. The pressures are based on load not tire size; you will rarely see a difference between optional tire sizes.

(Ok, I know a Bonneville is not a hybrid, but saw this pic and needed to use it. )


Seriously, My truck has gotton better gas mileage above 1300 rpm vs below sometimes. It really depends on engine load to help determine the best rpm to run at. Luckily I have an instantaneous MPG gauge in my C3 so I can see what my milage is at any point in time. I know it'* not neccissarily accurate, but I can tell if what I am doing makes it better or worse.

Couple other tips, pull enything out of your car you don't need. Every pound takes additonal gas to move. The less crap you have floating in your back seats and trunk, the better mileage you can get.

And to greatly simplify the tire preasssure comments, what rolls better, a full tire, or a flat tire.

Try to inflate your tires before you leave home... I try to keep mine between 31# and 35#...

Use the lowest weight advised for your vehicle (the more liquid, the less drag).

Change your air filter at least once a year.

Drive as if you had very bad or no brakes... Stay about 5-10 mph below the limit.

Drive according to the load on the engine, not the speed.

Avoid the Cruise control unless you're on a flat stretch of highway.

Reduce (or avoid) the use of the AC at lowere speeds (at higher speeds the drag of the open windows is greater than that of the AC).

1) tap brake pedal everytime you let off the gas it disingages the tc and lets it idle down to about 1k
2) let your car slightly decelerate on a uphill and then accelerate down. this is important dont let it coast down the computer reads the low load level and retards the timing for polution reasons if you keep your foot on the gas just slightly you will accelerate and keep the timing advance in.
3) when going to a stop sign or light put in neutral
4) windows down till about 40mph then ac on
5) Cold air intake really helps
6) keep your car as light as possible
7) keep car clean and waxed (lower dag efficiency prolly never notice a difference but ya know)
try to fill up at night you get a slightly denser charge of gas more bang for your buck
9) build a hho system research it on youtube they arent just a bunch of bs they can work
10) google hypermiling they have more techniques for every type of driving

naa yo forget that, we got bonnies, floor it till there aint a drop of gas left, thats how you live