[aceyx]

There are no rules per se, just keep the motor in low revs when you don't need power (flat, constant speed), keep it higher when you do or will need it (hills, passing, etc). Match the gear to above scenario.

I always rev-match when switching gears. It's smoother on the tranny and keeps the car's suspension settled.


The best you can do to save fuel consumption is to keep as constant a speed as you can without using the brakes (since brakes undo acceleration). Usually, this means staying far back enough from the car in front of you that you can engine brake/coast without hitting them when they inevitably slow down.

After stop lights and whatnot, get up to speed quickly, but don't nail the throttle. Taking your sweet ass time to get up to speed actually consumes more gas (there was a study on this in some european country a few years back).