hybrid cars milage

D

danny burstein

Jan 1, 1970
0
This comes up a lot in mpg comparisons, but it doesn't matter if the EPA
figures are out by 5% or 50%, the ratio between vehicles mileage ratings
would be the same because each vehicle is tested exactly the same way.

That would be true if cars acted the same way, ratio
wise, between the EPA tests and teh "real world".

Alas, it ain't that simple.

Just as one example, turning on the air conditionin,
which may "rob" 3 horsepower, gives you a much
bigger "hit" when you've got an efficient car
sipping fuel and only pumping out ten hp
on the road as opposed to a gas guzzler
gulping fuel to provide forty.

(fyi, real highway mileage, Va. to NY, on
my Insight (auto/cvt transmission) was
about 57 mpg. It would have been higher
if I'd have driven more modestly)
 
I

Ignoramus361

Jan 1, 1970
0
That would be true if cars acted the same way, ratio
wise, between the EPA tests and teh "real world".

Alas, it ain't that simple.

Just as one example, turning on the air conditionin,
which may "rob" 3 horsepower, gives you a much
bigger "hit" when you've got an efficient car
sipping fuel and only pumping out ten hp
on the road as opposed to a gas guzzler
gulping fuel to provide forty.

A gas guzzler engine driving a car of similar weight and aerodynamics,
would also produce about 10 HP.

i
(fyi, real highway mileage, Va. to NY, on
my Insight (auto/cvt transmission) was
about 57 mpg. It would have been higher
if I'd have driven more modestly)


--
 
M

mab010

Jan 1, 1970
0
mike wilcox said:
Crap my friend, the combined mpg of a prius is the best you can get period
for any five seater midsized car in North America and the second best for
any sized car sold in North America.

some figures

Nope, the Prius gets 60/City-51/Highway-55/Combined. Toyota does not make
a Non-Hybrid version of the Prius, the closest model to the Prius Toyota
makes is the Camry, which gets 24mpg/City-34/Highway-27/Combined.
As you can see the Prius gets twice the combined MPG as the Camry.

this was on a Honda

Sure you can buy a used car, but then you are comparing apples with
oranges, a fairer comparison would be between a new comparably sized
Nissan to the Prius. For example the newest Nissan Sentra gets 28/City-
35/highway, the Altima with the smallest engine gets 24/city-31/highway
35. So in your best case scenario, the Prius gets 36mpg better than the
Nissan around town and 17 mpg more on the highway.

Apples to oranges. how do you figure. Poeple by used cars every day
because they can not afford a new ones..I am talking reality. I believe
this is good option for some poeple.
 
D

Daniel Armstrong

Jan 1, 1970
0
Yep...... This is where people get in trouble. Some of "Those figures"
are really wacked. A while back, someone pointed to a "hybrid website",
which had a "comparison" of sorts that would allow you to put in your
vehicle and compare it to the Prius.

Problem is, the Prius numbers displayed with the wind at its back, and
every other vehicle must have been listed with MPG's into a 100 MPH
headwind. The data was just plain Wrong, as is often the case. Yet,
some people choose to really believe it.

The best way to see what something REALLY gets is to know a few
trustworthy and truthful people (seems many tend to inflate reality) or
search the web for USERS who make statements about their mileage. THEN,
you still have to weigh things out accordingly.

I have not seen references from newsgroup contibutors that indicate
routinely 60MPG city........ I HAVE seen a LOT of people who are LESS
than thrilled because they themselves have not been able to reach the
"numbers" proclaimed by the manufacturer.

The first poster IS correct to that extent.... Sure, its wonderful,
great, but as he likely knows, there were some mid 80's plain jane cars
that could do 45 on the road, no batteries, no radical electronics, no
future radical costs. I myself wonder what those cars will be worth
when the battery pack is finally kapuut. After all, if people are SO
energy aware, they should be in favor of KEEPING a car like that ON the
road rather than wasting energy melting it down to make a new one.

It will be interesting to say the least, to see where it goes.... Could
be the way of the Renault Fuego or Yugo....

Grummy
The prius is designed for low emmisions NOT fuel economy as strange as that
may sound. The ECMs in the prius will happily sacrifice economy to keep the
ICE (internal combustion engine), oxygen sensors, and catalytic converters
all at the optimum temperature.

As far as traction battery replacement goes there are 28 modules consisting
of 6 cells each in the 2004-2006 prius and each module can be replaced
individually in case a cell shorts or goes open circuit (highly unlikely).
If no cells short or open the whole battery will not just fail overnight and
need to be replaced it will gradually lose capacity over time. Lost
capacity will only result in a reduction in mileage due to not being able to
regenerate as much energy when braking and not being able to run as long in
"stealth".

Please do not apply the common problems with consumer NiMh batteries to the
prius battery because the prius keeps the battery between 40 and 80% charge
at all times unless you run out of gas and attempt to drive on electric only
in which case the battery will discharge further but will still shut down
before the point that there is not enough energy left to crank the ICE.

If you follow the advice of those who own the prius and keep the tires
inflated to the sidewall max cold pressure rating for the front and 2 PSI
lower for the rear (IE 44 front 42 rear) and use synthetic 5W30 oil at 1/4"
below the full mark you will be much more likely to achieve close to the EPA
numbers.

Note that I do not own a prius so I cannot verify this myself but I suspect
given the number of owners in the toyota-prius yahoo group that reccomend it
I suspect that it is true. At any rate if you live in an area that uses salt
on the roads in winter as I do (Iowa) the car will probably rust out before
the battery or engine wear out.
 
D

Dave Hinz

Jan 1, 1970
0
Maybe it's time for folks to pull that old practical joke whereby the joker
secretly adds some gas every day to the gas tank of the guy who like to brag
about his mileage. The "free" gas continue until even the "victim" almost
doesn't believe his mileage numbers.

My dad claims to have done that to the neighbor in the 1970s.
THEN the joker starts taking gas OUT of the victim's car.

Well, he just stopped, and then asked Bob why he hadn't said anything
about his gas mileage lately.
 
S

Steve Spence

Jan 1, 1970
0
mike said:
Crap my friend, the combined mpg of a prius is the best you can get
period for any five seater midsized car in North America and the second
best for any sized car sold in North America.

some figures



Nope, the Prius gets 60/City-51/Highway-55/Combined. Toyota does not
make a Non-Hybrid version of the Prius, the closest model to the Prius
Toyota makes is the Camry, which gets 24mpg/City-34/Highway-27/Combined.
As you can see the Prius gets twice the combined MPG as the Camry.

this was on a Honda



Sure you can buy a used car, but then you are comparing apples with
oranges, a fairer comparison would be between a new comparably sized
Nissan to the Prius. For example the newest Nissan Sentra gets 28/City-
35/highway, the Altima with the smallest engine gets 24/city-31/highway
35. So in your best case scenario, the Prius gets 36mpg better than the
Nissan around town and 17 mpg more on the highway.

And VW Diesels get a hair over 50 mpg without the complexity, and will
run on free used fryer oil.
 
M

mike wilcox

Jan 1, 1970
0
Steve said:
And VW Diesels get a hair over 50 mpg without the complexity, and will
run on free used fryer oil.

Right .....tell me how many people feel that playing with rancid oil,
poisonous chemicals and waste is "without the complexity" ;~)
 
D

Daniel Armstrong

Jan 1, 1970
0
I can imagine what the cost will be to rid oneselve of the Prius
battery pack someday. Dont for a minute think this will be a simple
recycling issue. Get your wallet out !

Toyata currently has a $200 bounty on them that is they pay you $200 if you
turn it in instead of you paying them.
 
V

Vaughn

Jan 1, 1970
0
Come to think of it, take out the "rancid oil" from the above, and you
are explaining someones job someday when the battery pack needs to be
"Processed".

Apparently old NIMH batteries have residual value just like lead acid
batteries. On my job I generate hundreds of used NIMH batteries. Disposal used
to be a problem, but now there is an outfit that send me free boxes with
pre-paid shipping labels. They will take all of the batteries I can send them.

Vaughn
 
C

Chris Hill

Jan 1, 1970
0
And VW Diesels get a hair over 50 mpg without the complexity, and will
run on free used fryer oil.

Yes, with a lot of processing. Also, diesel has 20% more btu in a
gallon, so you're talking about 42 for a pretty small car. Not that
impressive.
 
D

Derek Broughton

Jan 1, 1970
0
Steve said:
And VW Diesels get a hair over 50 mpg without the complexity, and will
run on free used fryer oil.

They will for now (and after careful consideration, I'm convinced a VW
diesel is a better deal for me than a Prius - and way ahead of any other
current hybrid) - but we can't all buy a diesel and run on free used fryer
oil. One of these days (I hope - though I imagine you don't :)) enough
people will be wanting the fryer oil that there's a market for it.
 
D

Derek Broughton

Jan 1, 1970
0
BobG said:
MW:
Right .....tell me how many people feel that playing with rancid oil,
poisonous chemicals and waste is "without the complexity" ;~)

What poisonous chemicals and waste? aiui, there's a little waste that is
filtered out - which had darn well better not be toxic, as people were
eating their food out of it a little earlier - and no other chemicals
required (except for regular diesel fuel - but the Prius is using gasoline,
too).

Yes, filtering your used fryer oil is a task that most people don't want to
do themselves.
I think he meant the diesel engine was not very complex, however, I
think the Turbo Diesel Injected model in the Jetta and the Bug IS
efficient due to the electronic injection controls. The older Rabbit
diesel used regular injectors, no turbo (I think... ),

My recollection is that the turbo was always available on the Rabbit -
though perhaps not the only option.
 
D

Derek Broughton

Jan 1, 1970
0
Chris said:
Yes, with a lot of processing. Also, diesel has 20% more btu in a
gallon, so you're talking about 42 for a pretty small car. Not that
impressive.

How do you figure that? mpg are mpg. If you want to argue that it needs to
be measured differently because it has more btu, then you should factor in
cost as well - and I'm not sure anyone can, since there's no clear
relationship between the price of gas and diesel. Not that small either -
Jetta wagons are about the size of the Prius and a little cheaper.
 
S

Steve Spence

Jan 1, 1970
0
mike said:
Right .....tell me how many people feel that playing with rancid oil,
poisonous chemicals and waste is "without the complexity" ;~)

There are no poisonous chemicals. We drive up to a restaurant, drop the
pump line into their container, and pump through filters directly into
our tank. The oil isn't "rancid" (just came from the fryer), and
changing filters is no worse than changing your motor oil filter.
 
S

Steve Spence

Jan 1, 1970
0
Chris said:
Yes, with a lot of processing. Also, diesel has 20% more btu in a
gallon, so you're talking about 42 for a pretty small car. Not that
impressive.

no processing other than filtering and heating. and that's not
intensive. it's a suck and pump into fuel tank setup.

50mpg isn't shabby. if you want to use the 42 number then you have
compare a gas civic to a gas jetta, and a hybrid civic to a diesel jetta.
 
S

Steve Spence

Jan 1, 1970
0
Derek said:
BobG wrote:




What poisonous chemicals and waste? aiui, there's a little waste that is
filtered out - which had darn well better not be toxic, as people were
eating their food out of it a little earlier - and no other chemicals
required (except for regular diesel fuel - but the Prius is using gasoline,
too).

Yes, filtering your used fryer oil is a task that most people don't want to
do themselves.




My recollection is that the turbo was always available on the Rabbit -
though perhaps not the only option.

I have 3 non-turbo rabbits. Never saw a tdi rabbit, except for a diy
transplant. rabbit came as a IDI engine.
 
S

Steve Spence

Jan 1, 1970
0
Derek said:
Steve Spence wrote:




They will for now (and after careful consideration, I'm convinced a VW
diesel is a better deal for me than a Prius - and way ahead of any other
current hybrid) - but we can't all buy a diesel and run on free used fryer
oil. One of these days (I hope - though I imagine you don't :)) enough
people will be wanting the fryer oil that there's a market for it.

I can get you all the filtered fry oil you can use for $1.50 / gallon
FOB Winthrop NY.
 
M

mike wilcox

Jan 1, 1970
0
Derek said:
BobG wrote:




What poisonous chemicals and waste? aiui, there's a little waste that is
filtered out - which had darn well better not be toxic, as people were
eating their food out of it a little earlier - and no other chemicals
required (except for regular diesel fuel - but the Prius is using gasoline,
too).

Old oil is a biohazard, full of bacteria and I believe methanol is used
in the making of Bio diesel
Yes, filtering your used fryer oil is a task that most people don't want to
do themselves.

That's mainly my point, most people want to hop in and drive.
 
S

Steve Spence

Jan 1, 1970
0
mike said:
Old oil is a biohazard, full of bacteria and I believe methanol is used
in the making of Bio diesel

bacteria is in water, not old oil. it's not a biohazard. it's french fry
oil. there's no methanol in a wvo conversion, only in biodiesel as you
pointed out. we are not discussing biodiesel.
That's mainly my point, most people want to hop in and drive.

yep, and we set up our conversions so they can do that.
 
S

Steve Spence

Jan 1, 1970
0
BobG said:
DB:
mpg are mpg. If you want to argue that it needs to
be measured differently because it has more btu, then you should factor
in
cost as well - and I'm not sure anyone can, since there's no clear
relationship between the price of gas and diesel.
=======================================
Dollars per mile would be a good metric. Works with US or Imperial
gallons, and with hybrids and all electric vehicles. Anyone have some
numbers to start with? I'm getting 31 mpg and just bought gas at $2.10
a gal, so I'm getting 7 cents a mile. What are the Prii and EVs and
diesels getting?

Jetta TDI (50mpg)

on diesel it's

$2.89 per gallon / 50 mpg = $0.057 per mile

on wvo it's

$1.50 per gallon (commercial price for filtered wvo) / 50 mpg = $0.03
per mile

My gas Cavalier runs me $0.079 per mile, the diesel suburban on veggie
runs me $0.15 per mile
 
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