350 MPG cars

Do hybrids get more inefficient as the batteries wear out? Does the mileage change as the air temperature varies? Are the batteries lead-acid, or something else?
 
CBL4 said:
For the foreseeable future, there will be a great electricity surplus during the night. If the price of electricity varied during the day, overnight charging could be made very cheap. If the car needed to be charged during the day, it would be a different story.

Yes but hybrids are expensive with possible battery disposal problems and the technology has not been shown to be robust. Manual transmissions and properly inflated tires save money and are more reliable in addition to saving fuel.

CBL

Yep, but if a substantial fraction of people are driving cars that need to be charged, then some of them will have to be charged during the day, and there won't be a great electricity surplus during the night.
Will many people put their chargers on some kind of system where the grid can turn them off to shed load? (As some people do now with A/C) Sure, if it will save them some money. Almost certainly, if it's a hybrid where not having a full charge doesn't mean you can't take the trip. Will the price of electricity go up as demand goes up, even if it's off-peak? You bet.
 
I've purchased two hybrids in the past year.

Tax credits and deductions for both cars - $7,000.
Not having to ever have them emissions tested - $500
Averaging 40-45 and 60-65 MPG - $1,000 / year
Driving two cars with nearly zero emissions and using less then 1/2 the gas...priceless

Wildcat:
I've driven the cars in and through the mountains and on 75 MPH highways. They climb, merge and pass just fine. I won't kid you, they are economy, not sports cars. But if someone is in the market for a small car, they should consider one.

I look for reasons to do something positive, not reasons not too.
 
DavidJames said:
two cars with nearly zero emissions and using less then 1/2 the gas...

Nearly zero emissions? Where is that figure coming from? If it is using half the gas then it is producing half the emissions.
 
DavidJames said:
I've purchased two hybrids in the past year.

Tax credits and deductions for both cars - $7,000.
Not having to ever have them emissions tested - $500
Averaging 40-45 and 60-65 MPG - $1,000 / year
Driving two cars with nearly zero emissions and using less then 1/2 the gas...priceless

.

And how much extra did you pay for each over the standard model? $5,000 each, = $10,000, you are about even....

Two Geo Metros would get the same milage, you're even...

Additional 'pollution units' for the batteries.... you're even...

Giving yourself a pat on the head for no reason....priceless...



They may use an unusual tire, how does the cost per mile compare to a standard tire?
 
Ladewig said:
Nearly zero emissions? Where is that figure coming from? If it is using half the gas then it is producing half the emissions.
It's more complex then simply dividing by 2. If you really care, do some research on SULEV or SULEV-2. I will admit to a bit of hyperbole though by saying nearly zero. Comparatively speaking, I can't do much better.
 
casebro said:
And how much extra did you pay for each over the standard model? $5,000 each, = $10,000, you are about even....

Two Geo Metros would get the same milage, you're even...

Additional 'pollution units' for the batteries.... you're even...

Giving yourself a pat on the head for no reason....priceless...



They may use an unusual tire, how does the cost per mile compare to a standard tire?
So where can I buy a new Geo Metro and what are it's emissions ratings? And how much are the "pollution units"?
 
This from a 2002 article in a car magazine:

"Toyota's European Yaris compact car gets better fuel economy from its conventional 1.4L turbodiesel powertrain than does the highly touted (and more expensive) Prius hybrid-electric vehicle sold in the U.S. Yet the two are built on the same platform and are essentially the same vehicle.

The diesel Yaris is rated at 56 mpg (4.2 L/100 km) in the combined Euro test cycle, while the Prius HEV is rated at 52 mpg (4.5 L/100 km) city and 45 mpg (5.2 L/100 km) highway."

It sounds like the Euro EPA milage tests are closer to reality.
 
comparison of Honda civic hybrid sedan versus standard Honda Civic (5 speed transmission)

standard mpg - 32/38
hybrid mpg - 46 / 51

standard weight - 2612
hybrid weight - 2675

standard hp - 115@6100
hybrid hp - 85 @ 5700 / 93 @ 5700

standard passenger volume - 91.4 cubic feet
hybrid passenger volume - 91.4 cubic feet

Based on the above it looks like a reasonable estimate of the fuel economy improvement for a hybrid is in the range of 40%. Although it looks like the hybrid has a little less power and weighs a little bit more so its acceleration will probably be a little less. So maybe 30% plus is a good number on a like for like basis.

As to the diesel car discussed above I believe it is well known that diesel cars get better mileage than gas powered cars. In a similar thread previously somebody said that there were disadvantages to the diesel engine that countered some of the fuel economy advantages. I think polution was one of the things mentioned but it seems like the poster had another point that I've forgotten.

http://automobiles.honda.com/models/specifications_full_specs.asp?ModelName=Civic+Hybrid&Category=2
http://automobiles.honda.com/models/specifications_full_specs.asp?ModelName=Civic+Sedan&Category=2
 
I drive a 2001 Honda insight CVT. I get 63mpg.
the 2005 5 speed insight regularly gets 75mpg.

In the Tour Del Sol, a modified honda insight averaged over 100 mpg on a hilly, long distance course.
The modification was a way to manually control the "lean burn" feature of the engine. (technical specs here)

I think you guys are being too cynical. Some of the hybrids, at least, are quite efficient.

BTW, the CVT is rated SULEV by the EPA
(super ultra low emissions vehicle.)

and it doesn't plug in. I swear, I can't believe how many people ask me where the plug is:mad: :mad:
 
Originally posted by Wildcat
They've since raised the speed limits, in most states it's now 65 or 70 mph, doesn't she get scared w/ all that traffic whizzing by her? I imagine merging is also a problem...
It's a great car if your freeway driving is limited. It actually does OK on the freeway but accelleration is obviously not the best. She drove it for years in the DC area without any problems. We also drove it across country completely filled and it did fine. It was slow over the mountain passes out west but that was with a lot more weight than normal.

If you want a economical (buying and maintaining), reliable second car, it is ideal. Too bad they don't make them anymore.

BTW, if I were looking for a sedan, I would certainly consider the Prius. Unfortunately, my next car will probably be a minivan. Is there a hybrid mini-van yet?

CBL
 
Keneke said:
Once again, we have skeptics on both sides of the issue. We need to compare a normal car to the same car with a hybrid system, in order to see how many mpg it truly saves. Even the current Civic cannot be compared to a Civic Hybrid, since the Civic Hybrid has a smaller engine than its normal cousin. (1.3L Hybrid compared to a baseline 1.7L for the normal Civic)

Anyone got any hard data?

I don't see why you think they aren't comparable. One of the advantages of hybrids is precisely that you can use a smaller engine. Normal cars only output something close to peak power for short durations (accelerating up to highway speeds, for example), so if you can augment the gasoline engine power with battery power for those short periods, the necessary gasoline engine power required to get the same sort of performance is not going to be as large. Hence the smaller engine: it's an integral part of the benefit of hybrids. So I don't see why you shouldn't compare the two, it seems perfectly logical to me.
 
CBL4 said:
It's a great car if your freeway driving is limited. It actually does OK on the freeway but accelleration is obviously not the best. She drove it for years in the DC area without any problems. We also drove it across country completely filled and it did fine. It was slow over the mountain passes out west but that was with a lot more weight than normal.

If you want a economical (buying and maintaining), reliable second car, it is ideal. Too bad they don't make them anymore.

BTW, if I were looking for a sedan, I would certainly consider the Prius. Unfortunately, my next car will probably be a minivan. Is there a hybrid mini-van yet?

CBL
Well, Toyota call this an SUV, but the two-wheel drive version is pretty much a mini van/people carrier.

btw that site seems to have good info on hybrids and electric vehicles in general.
 
Originally posted by Dragon
Well, Toyota call this an SUV, but the two-wheel drive version is pretty much a mini van/people carrier
I am interested but I really would like room for 8 and Highlander takes 7. (My family of 4 would like to be able to go on day trips with another family of 4.) Right now the Honda Odyssey is top of my list but I have not done much research (perhaps no research is more accurate.)

In any case, I cannot buy one right now. Perhaps later in the year.

CBL
 
CBL4 said:
It's a great car if your freeway driving is limited. It actually does OK on the freeway but accelleration is obviously not the best. She drove it for years in the DC area without any problems. We also drove it across country completely filled and it did fine. It was slow over the mountain passes out west but that was with a lot more weight than normal.

If you want a economical (buying and maintaining), reliable second car, it is ideal. Too bad they don't make them anymore.

BTW, if I were looking for a sedan, I would certainly consider the Prius. Unfortunately, my next car will probably be a minivan. Is there a hybrid mini-van yet?

CBL
Err, I was joking! You inadvertantly typed mph (miles per hour) instead of mpg.

I'd love to have a hybrid, but I'm in the construction business and need to haul tools and the occasional odd pieces of lumber and other material when the truck is unavailable. So I'm stuck w/ a 14 mpg SUV. :(
 
Wildcat wrote:
I'd love to have a hybrid, but I'm in the construction business and need to haul tools and the occasional odd pieces of lumber and other material when the truck is unavailable. So I'm stuck w/ a 14 mpg SUV.

I'm in a somewhat similar situation, but the fold down back seat in my prelude and my accord allows me to carry quite a range of stuff. When I need to carry larger stuff I rent a truck at a home center.

One disadvantage of the honda civic hybrid compared to the standard honda civic is that the back seat doesn't fold down in the hybrid. This would probably make it so that the hybrid wouldn't fit my needs.
 
CBL4 said:
I am interested but I really would like room for 8 and Highlander takes 7. (My family of 4 would like to be able to go on day trips with another family of 4.) Right now the Honda Odyssey is top of my list but I have not done much research (perhaps no research is more accurate.)

In any case, I cannot buy one right now. Perhaps later in the year.

CBL

The Odyssey was first on my list, too. We went and looked/ test drove it.
Wound up buying the 8 passenger Toyota Sienna.
No major reasons. Honda carries the spare tire inside, Toyota outside. I've had the wonderful experience of a flat tire, in the rain, on vacation. Had to set a lot of junk outside in the rain to get the tire out.
Toyota has three or so inches more ground clearance. They're both nice vans.
 
CBL4 said:
Clearly my wife's car is not as nice a car as a Prius. However, if mileage is the goal, much of the advances can be accomplished with old, reliable and cheap technology. Her 19 year old Honda still drives fairly well. In addition, it was one of the cheapest cars you could buy at the time.

If people would just buy cars with manual transmissions and keep their tires inflated properly, they could increase their mileage by 10 - 20%.

Pushing for manual transmissions and fully inflated tires seems a lot more sensible than hybrids.

CBL

People should just not expect a car to take off fast. It really gains nothing in the scheme of things, but wastes a hell of a lot of energy. The Honda gets you to work just as quick as a big V8.
 
I was under the impression that there was little difference between contemporary automatic transmissions and manuals in regards to efficiency.

Havn't really looked at any figures lately though.
 

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