Here you go - the obligatory how-to-save-money-on-gas article everyone does when gas prices go up. Here is mine.
1. Pick the right car. Choose wisely from the start. Buy a car that has the best mileage for the cheapest price. Hybrid, diesel, or 87 octane. Remember some cars recommend 93 octane but can use lower grades. But if the manual says 93 REQUIRED, stick with it.
2. Maintain the car. Oil changes, consider changing oil and transmission to synthetic to reduce friction, air filter, tire pressure, no extraneous cargo in the car, take off roof rack when not in use. buy tires with low rolling resistance. Don't buy big, heavy wheels.
3. Live close to everywhere you need to go. Tough for most people but if you live close to work, grocery store, etc you will spend less on gas.
4. Don't drive everyday. Consolidate errands. Carpool. Walk. Bike. Scooter. Bus.
5. Driving style. Drive gently - gentle acceleration and deceleration. don't race to each stoplight. try to time the lights. coast in gear. avoid traffic or high traffic times. avoid accidents. some gps will provide this info. don't go through drive thrus. don't get lost. use cruise control. don't speed - higher speeds use more gas due to increased wind resistance. Please don't drive like a jerk just to save gas though.
