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Fuel economy: Stop idling and start saving

Posted Jun 09 2008, 12:13 PM by Donna Freedman
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When I got to the bank last Friday, a pickup and a sedan were in the drive-through lane. I didn't pull in behind them because I'd read that one way to save gas is to avoid drive-throughs. Just for fun, I decided to figure out how long I would have waited.

The owner of the pickup must have had some pretty complicated banking, because the vehicle sat there for six minutes -- and I don't know how long it had been there before I arrived. The sedan owner's transaction took four minutes. In other words, if I'd gotten in that line I would have spent 10 minutes idling plus whatever time my own deposit would have taken.

Incidentally, a Lexus pulled in behind the other two cars. Maybe Lexus owners don't need to worry about the cost of gasoline.

But I do. Even at the cheap gas station on the corner the price is up to $4.11, and this place generally charges at least 10 cents less than most other stations. I look at their sign every morning while I wait for the bus. A week ago, the cost of a gallon went up nine cents between Monday morning and Wednesday morning.

So if you're looking for ways to cut gas usage, here's a tip: Turn off the engine when you're not actually going anywhere.

The 60-second rule?
According to auto Web site Edmunds.com, you should shut down anytime you expect to be waiting for more than one minute. While testing fuel economy tips, the authors of this article found that shutting off the engine is "more important than we assumed." In fact, they discovered that avoiding excessive idling can improve fuel economy up to 19%.

It's not as much as the top tip, which was to drive moderately rather than aggressively. That habit can improve economy as much as 37%. Still, 19% is a noticeable savings.

But I don't idle all that much, you protest. Maybe you don't. But maybe you do and don't realize it. Perhaps you keep the engine going while you wait for a kid to emerge from school or a partner to leave the workplace. Maybe you choose to sit in your climate-controlled vehicle listening to Beethoven rather than stand in a bank line. Or possibly you decline to unbuckle two toddlers from car seats when picking up a fast-food meal.

Idle hours
Sometimes using a drive-through makes sense. If you have arthritis or some other medical condition, it's less physically taxing to use the pharmacy window. And to be honest, I would hate dragging a couple of tired toddlers out of the car so I could pay for burgers and fries.

But for plenty of us, it's just a question of learning new habits. If you show up after band practice and your kid is nowhere in sight, simply turn off the car. Even if your son walks out of the school 30 seconds later, it'll take at least another 30 seconds -- and probably more like five minutes -- to say goodbye to his pals, walk to the car, and get himself and his sousaphone safely ensconced.

Ever left your vehicle running while you waited for a passenger to run into the store for a soda? Stop doing that.

Lulled by the convenience of the coffee shop's drive-through? Get over it, and walk inside.

Do you turn the key in the ignition before popping in a CD, buckling your seat belt/checking to see if the kids have buckled theirs, rooting through your briefcase for driving directions/programming the GPS, checking your voice mail or taking a few sips of coffee? Here's a suggestion: Start your car only when you're actually ready to drive it.

A billion minutes a year
Maybe this sounds penny ante to you. Try timing yourself the next time you're the fourth or fifth car in line at Starbucks. Even if you were first, I'd be surprised if it took less than 60 seconds for them to take your order, prepare it, hand it to you and make change. Park it, for heaven's sake.

An article at the Energywasters.com Web site gives an idea of how this penny ante time adds up. The article noted that the average fast-food restaurant wait after placing an order is about three minutes, not counting the time it took to wait in line to place that order. (This was based on a 2007 study conducted by an industry publication.) Based on these numbers, the site extrapolated that Burger King customers alone spend about a billion minutes a year idling, which translates to 16 million gallons of gas.

So go ahead: Sit in your car while you wait for coffee, dry cleaning, a bank transaction or some chicken strips. Let the engine purr while you wait for your spouse at the train station. But don't gripe about how much gas is costing unless you're doing what you can to reduce consumption. How hard is it to turn the key to the "off" position?

Comments

 

"a billion minutes a year idling, which translates to 16 million gallons of gas"

This assumes your average car burns a gallon an hour stopped but in the drive gear.  My wife's car burns 0.3 GPH and my truck burns 0.7 GPH under those conditions.

Lets say your car burns 0.5 GPH and you turn your engine off every time you have to stop for 2 minutes.  Assuming starting the engine uses no gas, you could save 0.016 gallons of gas shutting off the engine each time you do this, but you'll wear out your starter and your engine faster.  

If you're really concerned about saving gas, you'll save FAR more gas setting the cruise control for 60 instead of 70.  Doing that won't wear out your engine any faster.

I know I've been making cut backs on my personal driving habits & so are many of us out there. But there is a hugh group of people that complain about the prices but don't make these little changes, I see the waste all the time from co-workers, neighbors, & family. I don't want to sound like a preacher to them all the time, but how can we get everyone to change thier habits, they keep doing the same thing & figure that someone else will fix this problem. If everyone can make these little changes then we would truly have a tremdous impact.

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Great article Donna!!  I've always waited until I'm ready to put it in gear to start the car.  Hay, and as to the number one potential gas saver (drive slower and not agressively) how about tacking on an extra $200 to the cost of a ticket for speeding 10 miles over the limit or for "agressive/wreckless driving".  The extra money goes into a fund for researching alternative energy.  I do think turning off the car at stop lights may be counter productive.  Most people are just too slow to react and therefore traffic would build at lights and more gas is wasted.  Think of how many idiots you've had in front of you who can't even react to a green light when their car IS turned on.

If you drive a prius, the car switches to battery when you are stopped.  They are great cars for stop and go traffic.

Thanks, wm: I had forgotten to include all those people who circle the parking lots or idle and idle in hopes of getting a "rock star" parking space.

Again, I know that some people have a physical reason for needing to park closer; not everyone who is disabled has a license plate to prove it. But most of us are just, well, spoiled. It would do many of us a lot of good to park as far away as possible just to get the exercise!

Thanks for bringing that up, and for reading Smart Spending.

Best regards,

Donna Freedman

I drive a Honda CR-V.  I used to drive 80-85mph (leadfoot!) on the highway to work, which is a 1-hr. commute each way.  Now, I set the cruise control at 60-63mph.  Yes, it takes a little longer to get to work, but I've found it sure is worth it.  I only fill up ONCE a week, versus twice and sometimes on the weekend. Shopping trips are restricted to 1 night a week (at the most); eating out twice a month (at the local diner); growing my own veggies; and just plain old sacrificing.  I thank God I was raised on a farm, where I learned to be resourceful -- and I've taken those lessons into my adulthood.

Another way to save gas to slow  down and don"t tailgate. That way you won"t be      braking constantly . I get 25 mpg hi ghway in my 2001 ford .Windstar.

Idling=gas waste=help for terrorists.

1) disable traffic lights in off-peak hours

2) get rid of most "no turn on red" signs

3) rethink traffic-clogging construction. If it's basically cosmetic (resurfacing), do it at night or not at all.

The collective impact can be huge

Excellent column.  Your recommendation that reducing speeding and aggressive driving can save up to 37% of your gas seems accurate to me.  I slowly my driving on interstate highways from close to 70 mph (65 is the speed limit here) to about 61 mph.  My gas mileage went up from about 31 mpg to about 38 mpg.  I also stopped gunning my car between traffic lights in city driving and try to keep a steady but slow acceleration.  That's helped my city mileage too.

It is a good idea to let your car idle for a few mintues when the engine is cold.  Now if your like every other American that trades there car every 3 to 5 years it shouldn't matter.  I drive my cars till they die so I do like to let mine warm up, even in the summer.

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