This issue seems to come up so much in conversation that I can hardly believe EcoGeek has never covered the topic. Given that producing a car is an extremely energy and resource intensive endeavor, is it better for the environment to keep driving an old car, or to buy a new, more efficient one.
Unfortunately, that turns out to be a complicated question. In the end it depends on how long you'll keep driving your old car, how efficient it is, and what kind of car you're looking to upgrade to.
But to keep it simple, I'll be referencing a recent article from Salon's "Ask Pablo" series. A Toyota Prius produces about 1/4 of it's lifetime carbon emissions in the manufacturing process. The rest is produced by burning gasoline. That's about 113 million BTUs of energy. So, you have to make sure your old car is going to make up those 113 M BTUs when compared to the Prius. Coincidentally, burning 1000 gallons of gas is produces pretty much exactly 113 BTUs of energy.
So, you do the numbers with your own car. If switching to a Prius would save you more than 1,000 gallons of gas, then it'll be better for you to switch. If your car gets about 25 MPG (with a 20MPG difference between you and the Prius), then you're looking at 20,000 miles before it's environmentally better. For most, that's a few years of driving during which it's better to stick with your old car.
But it's always going to be greener to get an old car with roughly the same mileage as a Prius, like a Honda CRX or Geo Metro. But if you need the mileage and the comfort, the Prius is a good place to look.

written by Charles, June 03, 2008
written by John Charles, June 03, 2008
written by Barbara, June 03, 2008
If enough people don't buy, it's still tapping into market forces by lowering demand, and thus lowering production. It's just not instantaneous.
Market forces grind exceedingly slow, but exceedingly fine. Demand for the Prius took years to really take off. Lack of demand for other vehicles will take as much time to close, as well. And the Big Three manufacturers aren't well known for Moving With The Times.
Not silly, not at all. Lowering demand/consumption, even one by one, lowers production.
Eventually.
written by Joel, June 03, 2008
written by Ted, June 03, 2008
This past winter makes you people look awfully foolish.
Environmental activism, or earth worship, is the newist secular fundamentalist religion.
We all have to worship something.
written by Stephanie, June 03, 2008
Anyway, this fortunately won't be my standard any longer, but I racked up 35 thousand miles in 1.5 years. I hate thinking about that and I hate thinking about the workload I put on my car in such a short time.
written by ..., June 03, 2008
A gallon of gas weighs approximately 8 lbs. Your average refinery is over 1,000 miles away from the final delivery location. Your average oilfield is at least a few dozen, if not hundreds of miles from a refinery. So, how many extra BTUs are added in? On average, another 50k/gallon. Which means it's not nearly 1,000 gallons in 113 M BTU. It's actually about 684. Which would only require about 13,000 miles of driving before it's environmentally better to get a Prius.
Which means that if you switch now, and own your Prius for a little over 3 years, while driving an average of only 10 miles/day, you'll make a net gain of energy. Own it for longer than 3 years, or drive more than just 10 miles/day, and it's even better.
And that's not even to mention the gain in energy from BTUs you didn't have to waste working extra hours to pay for the extra gasoline to go the same distance.
written by Danyelle, June 03, 2008
written by TJ, June 03, 2008
written by mary, June 03, 2008
written by Rastus Halfernickel, June 03, 2008
written by Ben Dover, June 03, 2008
written by Diogenes, June 03, 2008
written by Jezel, June 03, 2008
I like my SUV and will drive it til it dies. Then I will probably buy another SUV. This does not mean I don't care about the environment, but I don't like small cars because they make me feel unsafe and they ride too low. Besides, are car-manufacturers really all that environmentally friendly to begin with? Forget BTUs, what about all the other pollution they create that is harmful to the environment? Green cars still have alot of the same stuff that other cars have, so its not like they are all that environmentally friendly.
:'( :-* :- :P 8) :o :( >:( ;D :D ;) :)
written by Oscar, June 03, 2008
written by Glenn, June 03, 2008
It's like thinking going vegetarian will save some cows. The cows are still gonna die, whether you eat them or not.
==========================
The number of cows that live today is not a natural number. They are bred so that you and I can eat them, and many more are bred for human food consumption than nature would otherwise have bred. If you and I stopped eating cows, no new cows would be bred for us. If a million people went vegetarian, a million cows would not have been bred next year, if you know what I mean.
The amount of field needed to breed enough meat for one person is much more than the field needed to grow veggies and fruit for the same person, so if everyone went vegetarian, more food could be made in total.
That said, I am not a vegetarian and dont want to be one either.
written by Todd Denio, June 03, 2008
written by Busted Backside, June 03, 2008
Kinda like your boss appreciates you wasting your time (his money) reading the discussion forums?
Your accusing people who are trying to take steps to BETTER life of needing to get a life?
written by YaYa, June 03, 2008
Getting rid of a perfectly good vehicle to buy a "green" vehicle might not be worth it, unless you are junking a Hummer or F-350. The article is right, take care of your current vehicle as long as possible.
I wish domestic auto-makers would hurry up and catch up with the Prius (I know they are trying and eventually will) and the point that buying American is greener because there are less shipping emissions.
written by Diogenes, June 03, 2008
You're right; earth worshiping religions are not a new thing, but neither are they terribly scientific. Perhaps we should sacrifice a few children to Molech in prayer that global warming is reversed? No, I guess burning them would increase their carbon footprint.
There is precious little evidence that global warming is even occuring, none has for the last 10 years, as the temperature has not increased. If it IS occurring, there is NO evidence it is caused by mankind. I suppose you'd argue that when we killed off the wooly mammoth (another thing for which there is no evidence) we caused the ice age by eliminating their farts, thus depriving the atmosphere of the warming benefits of methane.
I agree we should husband petroleum, however. It is foolish to burn a resource faster than necessary which is used for plastics, fertilizer and medicine.
written by Ben Dover, June 03, 2008
written by Bruce, June 03, 2008
written by BHughK, June 03, 2008
written by Justin, June 03, 2008
I notice that you didn't get into the cost factors. Many people are buying Prius's (Priusi? hmm) to save money on gas. Considering that you have to factor in the price of the vehicle versus the savings in gas, it is doubtful that it is advantageous to buy a prius.
This discussion comes close but still steers away from the root of the problem.
1) We live in a throwaway society. The very notion that people are going to buy a new fancy prius while they have one running in their driveway is ludicrous. But never questioned.
2) I could get into the auto-dependency of our culture and uban infastructure but I can save that for another day. Part of the reason tha this never questioned is because EcoGeek is committed to technical/scientific solutions. Environmental problems are technical/scientific problems but the real problem can only be anaylzed in social disciplines.
-------
On a comical note, I notice several people describing specific cars as "environmentally friendly". Within a year ago, the highest court in Sweden slapped a fine on a British automaker for describing their vehicles as environmentally-friendly. The reason? false advertising.
written by SWG, June 03, 2008
Now if you compare a more fuel effecient vehicle that number goes up very fast.
written by Ken Grubb, June 03, 2008
written by Erik, June 03, 2008
written by The Provocateur, June 03, 2008
MPG in smaller car > MPG in larger car/SUV
MPG in new small car = MPG in older small car
Cost of buying new car > Cost of keeping old car
Don't be suckered...just do the math.
written by Diogenes, June 03, 2008
Many of us have jobs, and often, they are not within walking distance of our residence. Some uncaring employers place schools, hospitals, factories, fire stations, etc. inconveniently to affordable housing. Others chose not to live in a postage stamp sized home just to be close to work.
Not everyone is comfortable begging rides from their friends, and some of us have schedules which do no permit waiting on an available benefactor to take us where we want to go. I live in a reasonably large city, and to take the bus from one side to the other is a 3 hour endeavor, as I found out when I had to have my small truck serviced last. If everyone practiced life as you do, there wouldn't be air service for you to fly this year, as the demand would not be great enough for it to be economically viable, unless ticket prices were so high you would be unable to afford to fly. Unless you really save a lot by mooching rides, that is.
written by Diogenes, June 03, 2008
The fact is, average global temperatures have gone up about a degree in the last 100 years. They have not increased in the last 10. Ice is thickening in some places, lessening in others. There are more polar bears now than ever. Your "mother earth" is dynamic, it seems.
Another "inconvenient truth" is that there is no evidence whatsoever that humankind has caused the aforementioned rise in temperature, anymore than we caused the Maunder Minimum which produced the mini-ice age. Have you ever heard of solar activity in your pursuit of science?
Here are some other truths:
You're right; global warming IS crap.
Cigarettes are addictive, and choosing to smoke them is up to the individual.
A zygote is the germ of a full fledged individual. Still, it's too bad your mother did't "choose."
Guns do kill. If you'd choose to attack me personally, instead of in writing, I'd be happy to prove your point.
written by carm, June 03, 2008
written by Patrick Lewis, June 03, 2008
There is no debate that our manufacturing and consumption of fossil fuels impact the environment. It's science and the evidence is there. There may be debate on the degree to which what human actions have what effect, such as the now tempered argument that climate change means more Atlantic hurricanes, but the science clearly outlines that, yes, we can ruin our own environment. Just because the more alarming predictions have been refuted or tempered through further study, which is the way of science, the basic reality still applies.
So what do you do? I like this article even if the math is a little fuzzy. Basically this article says throwing away something useful is not a good idea even in the name of conservation.
And let's examine two points. First, public transportation is paid by gas taxes. This is true, but if everyone stopped buying gas tomorrow, the government would still tax the public for this public work. Americans pay less and bitch more about paying taxes than any place else on the planet. This sort of shell game "Tax non commuters to subsidize public transportation" is the sort of relativism that makes the tax code complex and annoying. It's a huge issue, but has nothing to do with keeping your car.
My second point is that all cars are bad for the environment. What ever math you do will not erase that fact. Producing tires is dirty, making batteries for hybrids is dirty, just making the seat foam is dirty. Let's face it, industrialization is bad for the environment. These are all baby steps. We're learning.
So the moral of this article, like many other articles is: use your brain. Don't be wasteful and try to reduce and reuse.
written by boohoo, June 03, 2008
If you and I stopped eating cows, no new cows would be bred for us. If a million people went vegetarian, a million cows would not have been bred next year, if you know what I mean.
Actually, a widespread outbreak of vegetarianism won't stop the consumption of cows. Many people don't know than animal byproducts are a big part of manufactuing and reasearch (industrial and chemical). Cows will still be bred and consumed even if we didn't eat them. (Also, before its stated, NO, you cannot use synthetic materials for everything)
written by Joan, June 03, 2008
By the way, I don't believe in global warming, myself. I think it is all hooey. I notice that since the warming part hasn't materialized it has been changed to "climate change" so ANYTHING that happens, even in natural weather cycles, can be blamed on all of us. Climate change is being pushed because this way the powers that be (and I don't necessarily mean governments)can invent something to be sold that doesn't even exist, namely carbon credits. The rich will be able to buy extra to run their private jets, private islands (Branson-Virgin Records-look up that meeting on the net with Tony Blair & company-it will frost your cake-they are trying to figure out how to capitalize on the environment craze) and just generally make near-slaves out of the rest of us. They are already talking about installing radio-controlled interruptible thermostats in all new houses in California so that the gas/electric can be turned on or off at their discretion if they think you have your heat turned up for some reason. But it is ok for them because, they have paid for the right to be warm because they paid for carbon credits. Some pigs are more equal than others.
Granted, we must be good stewards of our planet and all of our resources-we ARE a throwaway society-but this stuff is hooey-don't be a lemming!
written by A.D.Bynum, June 03, 2008
I wanted to note here that the way we criticize the government, "liberal media", lobbyists, etc. for provoking a bi partisan, angry, mudslinging environment, we don't exactly set an example...
*please refer to the lovely comments above
written by fuzzy, June 03, 2008
written by me, June 03, 2008
written by Frodo, June 03, 2008
written by Diogenes, June 03, 2008
Here we are blaming ourselves in the US for energy usage, with many of our own people encouraging draconian government measures to limit driving and automobile ownership, and the two most populous nations on earth are supposed to be responsible for the skyrocketing gas prices by encouraging private car ownership, one of them a totalitarian society. Go figure.
Patrick, you're right. If we stopped buying gasoline, the government would just seize our property to pay for mass transit, and we'd all get to wait 30 minutes to an hour for a bus that takes us two blocks from our grocery store and drops us off 6 blocks from our home, while costing as more than driving would have.
written by melissa, June 03, 2008
So, I drice a 2003 Pontiac Vibe which I love very much. It is paid for, and I get roughly 30-32 mpg. However, with only one income, and 4 boys to raise, when the COL (Cost of Living) has doubled and my paycheck hasn't, then there is a problem. When I purchased my car in Aug 2002, I can remember paying roughly $14 to fill her up. Just 6 years later, I'm paying roughly $40-45, and it's not going to get any better. Along with that, the price of groceries is increasing as well.
The whole point of the article is to not be in such a hurry to purchase a 'greener' car if your current car is getting reasonably good mpg.
I can't say whether Global Warming is a hoax or not, but it has been proven that the Earth goes through warming and cooling cycles. Whether GW is a hoax or not, we need to get into the mindset that this is our only planet, and we need to take care of it. It's not like our great-grand children can just take off and fly to Mars to live because Earth is too polluted!
My point is, do what you can to save our resourses. Just because it's affecting us directly, our children's children will be affected. If you think that purchasing a 'greener' car is the way to go, then do it. If you rather recycle newpaper, then do it. If you prefer glass over plastic, then do it. Everyone needs to do something to keep what we have.
Just a note, I just spent 3 years over at Germany where recycling is a law (no kidding, they go through your trash and bill you extra if recyclables are in your trash). Recycling glass is very eco-friendly, therefore, they still use glass for their cokes and such. If we had such laws here, people wouldn't be building houses on top of landfills (I've seen it myself in Fl) and we wouldn't need to make so much more room for new landfills.
So, do what you think is right to be resourceful.
written by Kelly Anderson, June 03, 2008
written by Chris, June 03, 2008
written by Roger, June 03, 2008
....And I might also mention that if people took less vacations (driving = emissions) saved money for their next car and paid cash we would have less credit problems too. How many of you would pay cash for that Prius?
written by LucyP, June 03, 2008
written by understress, June 03, 2008
written by scott, June 03, 2008
I have a 1950 Chevy pickup that I drive in the summer - I call it my hybrid because its a straight 6 and I have to had lead to the fuel to keep it running - it only gets about 15-18 MPG, but 1950 steel was cheep (and made in the USA) - my other vehicle is a 1996 full size pickup - it migth get 17MPG on a good day. But I also have a 5 mile commute (about 7 minutes) so I use much less gas than those prius's hour long commutes. So my question is how mand carbon credits do I get? (and where do I collect them from?)
written by Chaos Rose, June 03, 2008
Guns do not kill, the people holding them do.
Zygotes are little humans, and his mother made
the right choice.
You are too cynical to appreciate the life and right to choose of other humans. Yes, we are human too. Not just you. You hide behind numbers and facts, and for that I pity you. You are an incomplete human.
And if you really want him to attack you, provide your address. That will solve everyone here's problems.
written by cadtechii, June 03, 2008
written by Penguin, June 03, 2008
written by farmer, June 03, 2008
written by Derek, June 03, 2008
By the way my standard Civic gets 38 miles per gallon and cost 30% less than a Prius while the gas mileage difference is only 15%. Both have tires, the Prius is heavier. So the fuel economy is offset by tire wear. Hence driving a Prius is nothing but a self serving exercisefor smug pricks.
written by Penguin, June 03, 2008
written by Andrew, June 03, 2008
If you think global warming isn't happening, you're brain dead. If you think man does not have an impact on this, you are also brain dead. Man obviously has an effect on earth, the environment, and climate. The real question is how much is man and how much is natural? I'm guessing most of it is natural, but man should play the part of being a good steward of what we're given.
This article is so common sense that it should not even be written. Obviously it's a dumb idea to immediately ditch your car and buy a hybrid. However, if you are in the market for a new car, hybrids are the way to go (unless, like Kelly, you could give a f*** about the environment).
By the way, why is anyone taking Ben Dover seriously? It's a fake name, and everything he writes is most likely fake as well. Get a life, kid.
written by Kaos Klerik, June 03, 2008
When Al Gore shows the chart showing corresponding rises of CO2 and average temperature he fails to mention that the increase in CO2 FOLLOWS the temperature increase, sometimes by hundreds of years. It is difficult to believe he is unaware of this fact, but he presents it in a way that makes you think the CO2 came first.
30 years ago the US consumed about 18 million barrels of oil per day. Since then the economy and energy needs have more than doubled. Today the US consumes about 18 million barrels of oil per day. Remember that the next time someone says we need to wean ourselves off of oil. We ARE reducing our demand for oil. The problem is that we import a greater percentage of it. That puts us at the mercy of our suppliers. Suppliers such as Iran and Venezuela who are less than friendly. Market speculators are driving up the price of oil futures becuase China and India are importing more and more oil every year. Supply is stagnant, demand increases: Does the price go up or down?
In 1995 Clinton vetoed drilling in ANWR http://www.anwr.org/backgrnd/where.htm. One argument used was that it would take 10 years before any oil would come out of the ground. That would mean 2005. We could have been getting oil out of ANWR for the past three years.
Corporations are not inherently evil. Don't scream about taxing oil company "EXCESS" profits unless you are also willing to make up the difference in the years they lose money. But then that wouldn't be much of an incentive to be efficient, would it?
Which is the better model for the environment in which businesses should operate? Which one is more likely to make investors willing to risk their money? Which one is more likely to produce efficient businesses?
#1
Make money - Do whatever you like with all of the profits no matter how much.
Lose money - Go out of business
#2
Make money - Government caps maximum profit
Lose money - Government gives you enough to break even.
written by Gary, June 03, 2008
written by Patrick Lewis, June 03, 2008
Now, Diogenes. Taxation is not equatable to government seizure. Pay your tax bill and your public services and infrastructure will improve.
written by Kaos Klerik, June 03, 2008
Currently Between Careers
written by Gary , June 03, 2008
If we're paying $130 a barrell for oil which is the chief export to the US from the Middle East and we need it (and of course we do)and OUR chief export to the Middle East is grain (barley, oats, wheat, etc.) for $7 a bushel and THEY need it (which they truly do) maybe we should tack on an export tax of $127 a bushel to level the playing field. Let them EAT their oil!!
The history of tariffs wars is not a pretty one.
written by Dann, June 03, 2008
As many scientists suspected, 2007 was the coldest year (globally) we've had since the early 1900's. The planet actually cooled .75 Degrees C. That's Huge! And it's going to keep up until the next sunspot flare cycle from 2012 - 2017.
2007 Undid almost all the "global warming" of the 20th / early 21st centurty in terms of immediate temperature drop. 2008 to 2011 should see continual drops in overall global temperature to a point that hasn't been around since the 1800's.
So far the trend is holding true to this account as 2008 has been markedly cooler. January continued the cooling trend as did Febraury of 2008. January was among the 10 coolest globally since 1900, and Febraury was among the 20 coolest. I haven't yet seen published data beyond that for 2008.
Anyhow - the idea that we have such a severe impact on the temperature of this planet is just another example of our inflated self-importance as a species. The reality is that _we're_ the blip in the planet's temperature.
written by Mike, June 03, 2008
written by Reality, please....., June 03, 2008
So now, it is "global warming". Maybe the Earth has increased a couple of degrees over the past century - it that any reason to scream "the sky is falling".
Have you ever stopped to think that maybe "global warming" is being over-blown. Look, it is a HUGE marketing play for today's products. EVERYTHING, is either "green" or "good for the environment". These are the latest teasers promted by the marketeers.
Young people fall into this trap of marketing.
Now that I am "older" I would never, never, in good conscience, put my babies into a "speck" (aka Prius) or other tiny car. Why buy the best car seat and then put the car seat in a virtual "death trap"?
Yes, eco-geeks, the laws of physics are still alive and well. If we were ever in an accident I would want my children to be protected that best way possible. If someone slams into my SUV (gasp, an SUV owner!!!), we will have a much better chance of avoiding injures than in the eco-speck vehicle that is "green."
Anyway, my observations as a parent and realist. BTW, it is China that is fouling up the atmosphere, America has actually become cleaner. The next time you see the smog over Yosemite, be aware that is blew over from China.
I will pay a little more for gas for better protection on the road. Do what you will...
written by JES, June 03, 2008
written by farmer, June 03, 2008
written by nathan p, June 03, 2008
written by farmer, June 03, 2008
See how your SUV plays against the coming Ice Age !!!!
written by farmer, June 03, 2008
Maybe Really Please is also a Limbaughist ???
written by Jim, June 03, 2008
written by Reality, please....., June 03, 2008
Not sure what Republicans, God, Darwin, "Limbaughist" (is that an adjective for a pronoun?), Satan, or Darwin have to do with driving a nice, big family car live an SUV.
I take comfort in knowing that my babies are safer in the backseat than they would be in the back seat of your "speck".
When you lose control of your speck while convulsing during the Rush Limbaugh, please be sure to give me a waive before you smash your speck into my SUV!!!
My family will be safe and maybe I can do something for the environment like scrap your speck of my car and have it recycled with by soda cans.
It's a simple matter of physics...
It's mass x velocity, stupid!
written by Reality, please....., June 03, 2008
Rather than be dictated to like people such as Farmer, it is best to be given a consumer choice. Through technology producing more fuel efficient cars that the people really want (ie can fit into their lifestyles of families, trips to Home Depot, Costco, trips to the mountains, beach and games for the kids)the market forces will fill this need.
Currently, the Prius is best suited for the single commuter - it is not family friendly. Down the road we will have SUV hybrids, thanks to innovation, and NOT nuts like Farmer.
written by Ryan, June 03, 2008
written by Reality, please....., June 03, 2008
My thought is if you are driving any GTOs, Malibus, Shelbys, or any of those breeds of cars.......cool man!
written by JES, June 03, 2008
written by PINA, June 03, 2008
to who ever said ice is thining and thickening in some places. yes it gets thicker because winter happens but when it melts again more of it melts then it did previously.
written by Krista, June 04, 2008
written by ripev1, June 04, 2008
http://vlane.com/blogs_article/80/ditch-your-guzzler-for-compact-car
written by Alexander Yerpat, June 04, 2008
http://friendshipunit.blogspot.com/
Check it out--Thanks!
written by Gregg, June 07, 2008
It seems to me, our environment is a system which is designed to balance itself when changes occur. IMHO, the effect man has on our planet is causing changes to occur more rapidly. In response, the earth has to compensate more rapidly (or more suddenly and extremely) to the changes we have made, hence some of the more extreme weather conditions and weather systems.
I don't remember seeing high and low pressure systems extending from the Arctic Circle all the way down to Florida, when I was a child. That may be why we now see New York at 100 degrees one day and Florida at 85 degrees the same day and then New York at 70 degrees the next day with Florida at 90, along with other more extreme forces of nature as time goes on. Just something to consider.
Another point to consider. I have been a moderator of discussion websites in the past and there is a phenomenon I have observed which I cannot understand. If we are one of the most advanced and most civilized nations (and supposedly the most advanced and intelligent species) on the planet, why can't each of us express our opinions for others to consider without someone feeling the compulsion to negate each point, insult the person making the point and have the last word no matter what is said. I think we all have taken a point someone has made, even if we disagreed with most of what he/she said and how he/she presented their point of view and altered our opinion which ultimately changes our knowledge base for the future.
I respect those who are objective and can, point by point consider what someone says and decide what they agree with and what they don't and not just dismiss someone because they don't agree with one point the other person has made. In addition, insulting someone has never taught anyone anything. It only makes people tense and defensive - not the best state of mind for absorbing knowledge.
I would imagine each of us has valid points to make. If only we could work together to produce a comprehensive and factual picture of the problem at hand, we might actually uncover the truth and therefore be able to develop a true solution with which most people would agree.
Yes, I realize how difficult or even impossible that is, but in a perfect world that would be very productive and produce benefits for each of us. It is the ultimate test of a person or group's leadership abilities to make that happen.
written by Jeff, June 16, 2008
THERE IS NO SUCH THING AS AN ENVIRONMENTALLY FRIENDLY CAR. The amount of hypocrisy in saying eco friendly car is just ridiculous when even owning a car puts you in the ELITE of this world.
I do think we should all ride bikes more and maybe that will solve the weight problem we have in this country too and lower the food prices. AKA less food being stuffed in newly biking/walking/running people equals less demand equals lower prices. ;)
written by Gregg, June 16, 2008
http://www.bbc.co.uk/sn/tvradio/programmes/horizon/dimming_trans.shtml
written by EH Stravinsky, June 26, 2008
Lenin had it pegged - "Useful Idiots"
written by databank3, August 06, 2008
The amount of gas that car 1(25 mpg) requires for this yearly mileage is 15000/25 which works out to be 600 gallons. The amount of gas that car 2(45 mpg) requires is 15000/45 which comes to 333 gallons of gas. Car 1 uses a total of 267 more gallons of gas(600-333) per year than car 2. At this rate it would take approximately 4 years or close to 60000 miles to use 1000 gallons more than car 2 (Prius et al).
At this mileage point the batteries within the Prius are probably close to 60-70% spent. Figure in the energy, say greenhouse gases, needed to make the new battery and to replace and recycle the old battery and you might can stretch it out another half a year or more. I can see the point that it might be wiser to hang onto your old car.
Also for a car to use 1000 more gallons than the Prius(45mpg)within the span of 20000 miles then it would have to average 13.8 mpg.
written by Rin Uchiha, November 02, 2008
gosh, peoples CHINA isnt that bad. they r trying to be more eco-friendly. yea u people all weird, discussing about things that u dont even make a move about. HAHA for u all. I bet im more eco-fiendly than u all. i dont have a car and dont plan on it for a few years. i was reading this for project but 1 piticular caomment annoyed me sooooooooooooo much. so fuck up already.
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