Cheap and Free Ways to Conserve Gasoline

Difficulty: Very Easy

In recent years the once simple task of fueling a vehicle has become an overwhelming burden in households around the world. The price per gallon of gas and the cost per barrel of crude oil continue to break all-time high records. While we may see slight relief from time to time with gas prices dropping a few cents during certain seasons or "off peak driving periods", it would be naive to think the price of a gallon of gas will ever drop to what it once was. In fact I think it would be safe to assume gas prices will continue to rise.

You may not be able to control gas prices, but you can control how much money you spend on gas. Conservation is the key, and with the tips below you can ease that pain at the pump and keep some cash in your wallet!

  1. Walk Or Ride Your Bike As Often As Possible. Obviously if you are going on a family outing your Huffy probably won't accommodate all passengers. But maybe for that trip to the convenience store your bike or sneakers could do the trick. It's an easy way to conserve gas, and you'll get some exercise in the process. Talk about killing two birds with one stone!
  2. Maintain Your Car. A poorly maintained vehicle can reduce your MPG (miles per gallon) by 15% or more. You can easily conserve gas and save money when your car runs properly. The goal is to eliminate any unnecessary stress on your car's engine, which would cause it to consume gas at a much faster rate. Regular service check-ups with a professional mechanic will diagnose and allow you to repair any faults that may be wasting gas.
  3. Get Rid Of The Junk In The Trunk! 200 pounds of junk will reduce your mileage by one mile per gallon. Don't store unnecessary items in your car's trunk or the bed of your truck. The only items you should carry in your vehicle are items needed for the particular trip, and of course an emergency kit.
  4. Avoid Long Warm-Ups. 30-60 seconds is more than enough time to warm your car up, even on the coolest of days. Believe it or not, the engine will actually warm up faster while you are driving. If you're warming your car up for more than a minute; the oil companies thank you!
  5. Use Cruise Control. If your vehicle has a cruise control feature, you will want to utilize it on long distance trips and highway driving. Cruise control will conserve about 5 to 10 percent of gas.
  6. Fuel-Up While It Is Cool. During hotter periods of the day, gas will be less dense, and will be more likely to evaporate as you pump it. Always gas-up early in the morning or late in the evening. It may seem minute, but hey -- we wanna conserve gas, right? Trust me, it all adds up to money in your pocket.
  7. Don't Idle. When traffic is at a stand-still, shut your engine off. If you just need to run into the store real quick, shut your engine off! Idling wastes about a quart of gas every 15 minutes. Stop unnecessary idling to easily conserve gas and save more money.
  8. Keep A Steady Pace. Avoid rapid acceleration and sudden stops. Both will put stress on your vehicle's engine leading to wasted gas. Driving at a steady pace will reduce the energy needed to run your car's engine, making it an easy way to conserve gas and save money.
  9. Inspect Your Gas Cap. If your vehicle's gas cap does not fit snugly, you may be losing fuel. Gasoline obviously is a gas, and will find the slightest of openings to escape. If you have any doubt that your gas cap is providing an air-tight seal, it's time for a replacement. A new gas cap will only cost you about 3 or 4 bucks, and will allow you to conserve gas for years to come.
  10. Use Your Car's Air Conditioner Wisely. A common misconception is that running your vehicle's air conditioner will waste gas. In fact it will conserve gas when used appropriately. If you're just cruising around town on a warm day, shutting off your A.C. and rolling down the windows will easily conserve gas and save you money. But if you're on a long road trip or highway driving, you may actually conserve more gas by running the A.C. The reason: wind resistance. If you're traveling at a high speed with your windows down, the incoming wind resistance will act as unnecessary weight, and cause your vehicle to consume more fuel. So this one is really a judgment you must make according to the situation.

With no end to gas hikes in clear sight, conservation is the key. By putting the above practices to use and developing good habits, you can actually lower your gas costs even as gasoline prices continue to rise!

David Caldarelli writes articles to inform people and families on ways to save money during difficult financial times. The main outlet for his advice is HowToDoThings.com but he also writes valuable articles on his blog at http://waytosave.blogspot.com
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Comments

In San Fransisco the gas prices are still near $5.

great article dave!...i started using some of these tips and my mpg is up over 6 mpg!

I would really like to see some ideas on how much each of these behaviors can affect gas mileage. I know every car is different, but one concrete example, and perhaps a how-to on measuring the effect would be great. Here's an example: I've seen similar claims about the idle-rate gas consumption, so I decided to measure it myself. I discovered that my car burns only 0.053 gallons in a fifteen minute period. (I'll write a how-to for anyone that wants to spend $.20 and 15 minutes to verify this for themselves). with bold statements about cars burning 5 times that rate, it's really hard to believe anything you read without more substantive detail behind it.

Dear prefer nottogiveoutpersonalinfo,
You are correct that every car is different, and that is why I specified all figures as averages. Obviously if you drive a hybrid car you will burn much less gas as opposed to someone driving a large old model car or S.U.V.
I must be honest, I don't believe you even attempted to test how much gas your car was consuming while idling. You say that you measured how much gas was consumed in a 15 minute period and conclude the results to the thousandth of a gallon? So you've got it broken down to 0.128 ounces? That's obsurd, and if it doesn't sound true it probably isn't.
If you would like to explain your method of math here I'm sure lot's of people will be very greatful. Where do we send the 20 cents?

Nice to get a response. I'm not BS-ing. I did measure it. Just to clarify, I wasn't asking for 20 cents, that's just the amount of gas you burn doing the measurement. (more like $.25-$.30, in reality).

So I should write a how-to? I wrote one up on another hot-to site whose name I won't mention, adjusted the numbers for convenient math, because the aim was the process not the result, but I could certainly do the same here.
As for the accuracy to the thousandths of a gallon, you can think what you like about the accuracy of my test, but the fact remains that it is on the order of 5x less than those quart per hour figures we've all heard many places, but never seen data to support. (My guess is that it may have been true for 1970's vintage cars, and the number has stuck.)

I finished my how-to article, with the exact data from my own measurement as examples in each step. As I reviewed my data, I did not come up with 0.053 gal as the 15 minute consumption (that number was stuck in my head from the later test where I attempted to measure the effect starting the motor repeatedly would have). I measured only 0.00303 gallons per minute in the idle-only test, which is 0.0455 gallons per 15 minute period. See my "How To Measure Idling Gas Consumption" as soon as it is reviewed and posted. I even detailed how I estimated the error (0.2% from each of two sources gives a total of about 0.3% error. So yes, I'll stand by my thousandths of a gallon figure.

On a side note, I really would like to know how much it costs to start the motor, because this determines how long you have to have the engine off in order to save enough gas to be worth the restart. What I observed is that compared to idling alone, killing the engine and immediately restarting did expend 0.002 gallons over 6 starts, but this is only the excess fuel that gets sucked in by the injectors under start conditions. It completely overlooks the main energy drag, which is the electrical power to turn the starter and the gas required to eventually recharge the battery back up. To really measure this in this fashion would require lots of restarts and showing that the battery discharge/charge gets into a steady state, and I figure that's gonna overheat the starter in a hurry. Moreover, the unregulated alternater voltage is significantly higher when at highway speed, so the battery will have to drop way below the nominal 12V before the idling engine will even start to drip charge back in. I think the only way to get to a decent value is to calculate from first principles and assumptions. Does anyone know where to find the number of Joules, Amps or Coulombs in a modern starter motor kick? Does anyone know How many Joules of gas you have to burn to put a joule into a car battery? I've heard numbers like 70 amps to crank the starter, but I'd bet that that peaks after the first tenth of a second or so, and sustains at a much more modest current, like 30 amps, so that the half second it takes to start a warm engine only draws (70*.1 + 30*.4)*12 =230 Joules (a totally uninformed guess). Then I'd bet that the engine is only 10% efficient at producing electricity, (rough glance at protable generateors gives 16%) and only 60% efficient at putting that energy into the battery (lots of voltage drop across the regulator), so the engine eventually draws an additional 230/.10/.60 = 3700 joules from the gas tank to replenish the charge. http://www.phy.syr.edu/courses/modules/ENERGY/ENERGY_POLICY/tables.html says there are 130million Joules in a gallon of gas, so that would mean 0.00003 gallons per start. Somehow that seems on the low side. If both of these are on the right order of magnitude, it would suggest that if you can stop the engine for more than 6 seconds, you'll save gas.

It's always nice to see people remember that cycling is a great way to conserve gas! Now if we could just get more cities to make that easier...