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i hate the term 'gas guzzling V8'

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JulesMaximus

No Lifer
Jul 3, 2003
74,584
984
126
Originally posted by: Babbles
I don't have a V8, but my V6 in my Grand Prix gets ~25-28MPG on average. Beign that it is a domestic car, it is supposed to have awful gas mileage, right?

No, just awful resale value, ergonomics, interior materials and reliability.
 

Stumps

Diamond Member
Jun 18, 2001
7,125
0
0
Originally posted by: JulesMaximus
Originally posted by: Stumps
I think I covered the history of the "Important" Aussie cars in this thread, Dug777 feel free to add any I missed.

http://forums.anandtech.com/messageview...atid=38&threadid=1527238&enterthread=y

Bah, I stopped reading that useless thread weeks ago. All the posts of 20+ year old cars was getting old...no pun intended.

At least dug linked to some Aussie cars made in this century. :laugh:

if you read the thread properly I posted plenty of links to new australian cars
 

JulesMaximus

No Lifer
Jul 3, 2003
74,584
984
126
Originally posted by: Stumps
Originally posted by: JulesMaximus
Originally posted by: Stumps
I think I covered the history of the "Important" Aussie cars in this thread, Dug777 feel free to add any I missed.

http://forums.anandtech.com/messageview...atid=38&threadid=1527238&enterthread=y

Bah, I stopped reading that useless thread weeks ago. All the posts of 20+ year old cars was getting old...no pun intended.

At least dug linked to some Aussie cars made in this century. :laugh:

if you read the thread properly I posted plenty of links to new australian cars

Do new Australian cars look like 20 year old American cars? 'Cause that's all I saw in there the last time I checked.
 

Stumps

Diamond Member
Jun 18, 2001
7,125
0
0
Originally posted by: JulesMaximus
Originally posted by: Stumps
Originally posted by: JulesMaximus
Originally posted by: Stumps
I think I covered the history of the "Important" Aussie cars in this thread, Dug777 feel free to add any I missed.

http://forums.anandtech.com/messageview...atid=38&threadid=1527238&enterthread=y

Bah, I stopped reading that useless thread weeks ago. All the posts of 20+ year old cars was getting old...no pun intended.

At least dug linked to some Aussie cars made in this century. :laugh:

if you read the thread properly I posted plenty of links to new australian cars

Do new Australian cars look like 20 year old American cars? 'Cause that's all I saw in there the last time I checked.

your a Knob...plain and simple..give up
 

Babbles

Diamond Member
Jan 4, 2001
8,253
14
81
Originally posted by: JulesMaximus
Originally posted by: Babbles
I don't have a V8, but my V6 in my Grand Prix gets ~25-28MPG on average. Beign that it is a domestic car, it is supposed to have awful gas mileage, right?

No, just awful resale value, ergonomics, interior materials and reliability.

Resale value does blow, and the interior is iffy, but the reliability of this particular engine and tranny is rock solid (good reason why GM was producing trannies for BMW) and the ergonomics are up to individuals (don't let that stop you from judging things :roll: ), but I don't have any issues with it. In fact my Grand Prix seems to be much, much more ergonomic than my old Accord.
 

PeeluckyDuckee

Diamond Member
Feb 21, 2001
4,464
0
0
I have a gas guzzling inline 4. Probably the owner before me modded the car and caused it the way it is now.

350KM on a 48L fill.

I drive the car every day and warm it up 15min before I go to work and 15min before driving it back home. That would have something to do with the killer the gas mileage I suppose.

But then even during the summer I get 400KM on the same 48L fill and that's with no warmup time.

I agree that gearing would affect the vehicle's mileage as well, especially on the highway.
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
102,402
8,574
126
Originally posted by: JulesMaximus
Originally posted by: ElFenix
seriously, the configuration of the cylinders doesn't have that much to do with mileage. even displacement isn't going to have that much of a difference (except for the increase in weight and internal friction). no, weight, gearing, and aerodynamics are the most important factors. of course, that is just the ramblings of a layperson.

The hell it doesn't. More displacement=less fuel efficient all other things being equal.

i didn't say it was the exact same fuel efficiency, but if you have the exact same amount of torque at the wheels, the same car weight, and the same aerodynamic drag, it won't be much worse. probably not noticeable.
 

jagec

Lifer
Apr 30, 2004
24,442
6
81
Originally posted by: PeeluckyDuckee
I drive the car every day and warm it up 15min before I go to work and 15min before driving it back home. That would have something to do with the killer the gas mileage I suppose.

You do realize that the fastest way to warm a car up is to drive it? Obviously you don't drive it too hard, or get it anywhere near redline, until it's fully warmed up, of course...
 

91TTZ

Lifer
Jan 31, 2005
14,374
1
0
Originally posted by: JulesMaximus
Originally posted by: ElFenix
seriously, the configuration of the cylinders doesn't have that much to do with mileage. even displacement isn't going to have that much of a difference (except for the increase in weight and internal friction). no, weight, gearing, and aerodynamics are the most important factors. of course, that is just the ramblings of a layperson.

The hell it doesn't. More displacement=less fuel efficient all other things being equal.


This is completely incorrect. On the contrary, more displacement = more fuel efficient. Less revs and more torque make for a lower specific fuel consumption. This is true for both gas and diesel engines. The engines with the lowest specific fuel consumption are the largest engines ever built.

Big engine

This engine's fuel efficiency far exceeds any car engine. Take a look at it and tell me if you think it has less displacement than a Geo Metro.

 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
102,402
8,574
126
for example, the m35 gets 18/25 and the m45 gets 17/23. that is probably almost all gearing. that is, you bought a V8 engine version so you want the throttle to be more responsive. so, even though the gear may be taller on the 45 version, it is a lower gear/torque ratio, giving more spirited performance but slightly worse fuel consumption.
 

jagec

Lifer
Apr 30, 2004
24,442
6
81
Originally posted by: 91TTZ
This is completely incorrect. On the contrary, more displacement = more fuel efficient. Less revs and more torque make for a lower specific fuel consumption. This is true for both gas and diesel engines. The engines with the lowest specific fuel consumption are the largest engines ever built.

Big engine

This engine's fuel efficiency far exceeds any car engine. Take a look at it and tell me if you think it has less displacement than a Geo Metro.

well...while it's true that if engines are sized appropriately to the requirements, bigger engines (like on ships) are more efficient than smaller engines (like on RC cars), many times car engines are really ridiculously oversized for how much horsepower is actually needed. Especially if one model has multiple engine options. It's true that the bigger engine may be more efficient at high power outputs, but when cruising (and only using a small fraction of either engine's potential power output), the smaller engine will probably be more efficient.
 

MikeMike

Lifer
Feb 6, 2000
45,885
66
91
Originally posted by: jagec
Originally posted by: 91TTZ
This is completely incorrect. On the contrary, more displacement = more fuel efficient. Less revs and more torque make for a lower specific fuel consumption. This is true for both gas and diesel engines. The engines with the lowest specific fuel consumption are the largest engines ever built.

Big engine

This engine's fuel efficiency far exceeds any car engine. Take a look at it and tell me if you think it has less displacement than a Geo Metro.

well...while it's true that if engines are sized appropriately to the requirements, bigger engines (like on ships) are more efficient than smaller engines (like on RC cars), many times car engines are really ridiculously oversized for how much horsepower is actually needed. Especially if one model has multiple engine options. It's true that the bigger engine may be more efficient at high power outputs, but when cruising (and only using a small fraction of either engine's potential power output), the smaller engine will probably be more efficient.

dude, i can go through a gallon of gas for an R/C car in a few hours, if im full throttle but then again, that is at 32K rpms... and thats also like 100 refuels

MIKE
 

91TTZ

Lifer
Jan 31, 2005
14,374
1
0
Originally posted by: jagec

well...while it's true that if engines are sized appropriately to the requirements, bigger engines (like on ships) are more efficient than smaller engines (like on RC cars), many times car engines are really ridiculously oversized for how much horsepower is actually needed. Especially if one model has multiple engine options. It's true that the bigger engine may be more efficient at high power outputs, but when cruising (and only using a small fraction of either engine's potential power output), the smaller engine will probably be more efficient.[/quote]

The problem with car engines is that they need to be operated over a wide range of RPMs and power output. If you optimize your engine to perform well at one setting, you're going to give up some performance at another setting. Like you said, when you cruise on the highway you're only using about 40 hp. An engine that is tuned to be capable of 400 hp will not be as efficient at the 40 HP setting as a 70 HP engine at the 40 HP setting. One will be operating in its "sweet spot", while the other one will be out of its peak efficiency range.

That is one of the main reasons that the hybrid cars are so efficient, because the gasoline engine running the generator is able to be sized right for its task and is able to run in its peak efficiency range the majority of the time.
 

Svnla

Lifer
Nov 10, 2003
17,986
1,388
126
Here is something for those domestics fanboys.

"Two decades ago, General Motors, Ford and Chrysler had 76 percent of the market. Today, it's below 60 percent and falling. "
"But as you get to about three years of ownership, which is when the warranty expires, people tend to have more problems with Detroit vehicles than Japanese vehicles."
"But the U.S. industry has huge expenses ? health care packages for workers cost the Big Three anywhere from $1,000 to $1,500 per vehicle, compared to less than $400 for the Japanese."
"And then there are incentives. To move its vehicles, Detroit offered an average of more than $3,100 in February, nearly three times as much as Japan. It's a trend that GM ? with its falling sales and profits ? says it must reverse."
"Having dominated passenger cars and made inroads with SUVs, Japan now has its sights on Detroit's last big profit center ? pickup trucks.
Toyota cenior vice president Don Esmond says the formula won't change.
"At the end of the day, it's who does the best job of listening to the customer" who is going to be the winner in the high stakes race to capture the loyalty and confidence of America's drivers."

Link from MSNBC.COM


 

JulesMaximus

No Lifer
Jul 3, 2003
74,584
984
126
Originally posted by: 91TTZ
Originally posted by: JulesMaximus
Originally posted by: ElFenix
seriously, the configuration of the cylinders doesn't have that much to do with mileage. even displacement isn't going to have that much of a difference (except for the increase in weight and internal friction). no, weight, gearing, and aerodynamics are the most important factors. of course, that is just the ramblings of a layperson.

The hell it doesn't. More displacement=less fuel efficient all other things being equal.


This is completely incorrect. On the contrary, more displacement = more fuel efficient. Less revs and more torque make for a lower specific fuel consumption. This is true for both gas and diesel engines. The engines with the lowest specific fuel consumption are the largest engines ever built.

Big engine

This engine's fuel efficiency far exceeds any car engine. Take a look at it and tell me if you think it has less displacement than a Geo Metro.

So, you are completely overlooking where I stated all other things being equal? :roll:
 

rh71

No Lifer
Aug 28, 2001
52,844
1,049
126
<late to the party> is it like when someone says "that dumb blonde" ? Her hair color has nothing to do with intelligence either </yeah>
 

CChaos

Golden Member
Mar 4, 2003
1,586
0
0
Wow, this thread is like deja vu all over again. Listen! "gas guzzling V8" is accurate for most of the V8s on the road.
 

3chordcharlie

Diamond Member
Mar 30, 2004
9,859
1
81
Originally posted by: LtPage1
yeah but they are.

the more cylinders, the worse gas mileage. thats not technically correct, but when you look at actual cars on the road, its never wrong. on the same model car, the extra cylinders make for worse mileage.

A few years ago, the V8-equipped GM F-cars got slightly better mileage than the ones with the ancient 3800 V6.
 

StageLeft

No Lifer
Sep 29, 2000
70,150
5
0
Originally posted by: IHYLN
Nissan/Infiniti

Sh1t_cars

oops i guess I forgot the f in there
Why do you hate them so much? Did somebody driving his family back from the grocery in his maxima smoke your 325i at the lights or something?