Pontiac G8 Forum banner
Cancel

"To G8gt or to G8 GXP that is the question.."

28948 Views 13 Replies 10 Participants Last post by  firemangtp, 
R
So I have seriously considered the G8 gt (6.0 w 361 hp)and I almost gave in last week...
My hesitation comes from the 2009 release of the GXP sedan...
We all know it has a 6.2L and 402 HP stock and shares everything the gt has to offer.

RJ
See less See more
Reply
Save
Like
1 - 14 of 14 Posts
M
Fuel Consumptions

With the horses, you will be gas guzzling. My wifes G8 GT sucks too much gas....... forget about cylinder deactivation etc. I'm starting to dislike how much fuel it consumes for city driving.

So speaking about that, 402 HP will suck your tank dry in no time city driving. I'm surprised that this new vehicle actually consumes more fuel than my Trans Am.

Overall, your tank and your pocket book will be drain ad a Daily City Driver.

Matthew

RjG8 said:
So I have seriously considered the G8 gt (6.0 w 361 hp)and I almost gave in last week...
My hesitation comes from the 2009 release of the GXP sedan...
We all know it has a 6.2L and 402 HP stock and shares everything the gt has to offer.

RJ
Click to expand...
Reply
Save
Like
R
Matthew,
Sorry to hear that... Yeah, I figured gas would have an effect after the first few months of driving the G8 GT. It's the first few months of excitement where we can rationalize and justify gas concerns since its such a wonderful powerful ride.
How much and how often are you and your wife spending each fill up? And, what do you think avg gas mileage is as a daily driver? I know there are lots of factors to take into consideration but ball park numbers would be great...

Thanks in advance,
RJ
Reply
Save
Like
T
Gas!?!?!?!? it is a fact of life you gotta pay to play. We are lucky to have company cars and better yet live a mile from work. :D
Reply
Save
Like
C
The G8GT is EPA rated only one mpg worse than the GPGXP or even my '03 GPGTP for that matter. If real world driving can accomplish that, I'll be happy. BTW, there is a service update on reflash of ECM and TCM that if you haven't reflashed for performance already you may want to call your dealer. Not sure exactly what it does.
Reply
Save
Like
S
MattL76 said:
So speaking about that, 402 HP will suck your tank dry in no time city driving. I'm surprised that this new vehicle actually consumes more fuel than my Trans Am.
Click to expand...
You couldn't have honestly believed that a heavier car with a larger and more powerful engine would return better mileage than a Trans Am.
Reply
Save
Like
O
Just depends on what you personally want, your budget, preferences, etc. If you think gas price is going to be a concern, then you have to consider that even the GT might be too much for ya. Afterall, gas prices are high, and will only continue to go higher and higher. Especially since these cars "recommend" Premium to get the most power out of them anyways.

But if you really want a G8, then you could almost consider the GT a great compromise between the V6 and GXP. And then you can use that extra $$$ you saved on gas. :)
Reply
Save
Like
IXLR8
If you want to grin everytime you mash the gas pedal, then the G8 GT, or G8 GXP is your kind of car. If you like to grin at the gas pump, then pick something else, like a Prius... Right now is probably the last time in your lifetime that you will be able to own a car that has this much raw power, and such poor fuel mileage. Conspicuous consumption will be gone forever very soon. If you want to enjoy the benefits now, it is going to cost you. If you cannot comfortabley afford to drive a 15mpg car with $5.50/gal gas, you should probably select something else. The V6 is still not going to be economical enough....

My 2 cents....
Reply
Save
Like
9
I'm waiting on the GXP.
Reply
Save
Like
M
Correct you are...... I wanted the Horses and willing pay for the horses, but cringe at how quickly the G8 Powerplant consumes fuel. My wife drives it and not me..... she drives to work, city driving. I think that is the biggest set back. Highway driving the G8 would do better.

Whenever I get a chance to drive the vehicle, I will step on it...... maybe once a month you can say.

Matthew
P.S. The worse part is that she does not step on it as the fuel is being consumed. Ouch!

It was either a Beamer, Mercedes, Cadillac, Volvo or the G8. The G8 was purchased based on return comparison. Can't beat it.


IXLR8 said:
If you want to grin everytime you mash the gas pedal, then the G8 GT, or G8 GXP is your kind of car. If you like to grin at the gas pump, then pick something else, like a Prius... Right now is probably the last time in your lifetime that you will be able to own a car that has this much
My 2 cents....
Click to expand...
Reply
Save
Like
M
Conservative Driver

The driving excitement is there...... but the vehicle is best for Highway Daily driving. City driving will guzzle the tank quickly even without acceleration.

My wife drives the G8 and accelerate quite conservatively. I may drive that vehicle once a month, but when I do, I know that I burn the fuel up babyyyyyyyy! Justifiable. I gave up my Trans Am for her G8. Have to work out the agression some how.

Besides, I also have a new Trans Am that I drive once a month that I also burn the gunk out of the engine big time as I step on it. I have 3 V8 in my family and drive my 4 cylinder Saturn daily..... 8 mile round trip to work where I fill up once every 3 weeks.

Matthew


RjG8 said:
Matthew,
Sorry to hear that... Yeah, I figured gas would have an effect after the first few months of driving the G8 GT. It's the first few months of excitement where we can rationalize and justify gas concerns since its such a wonderful powerful ride.
How much and how often are you and your wife spending each fill up? And, what do you think avg gas mileage is as a daily driver? I know there are lots of factors to take into consideration but ball park numbers would be great...

Thanks in advance,
RJ
Click to expand...
Reply
Save
Like
M
The G8 Powerplant

The Cylinder Deactivation took me for a spin I guess.... yes the G8 is heavier and the powerplant delivers bigger HP numbers than that Trans Am..... Guess I was gullible from the fact that it would give way better MPG than its predecessor based on technology.

24 mpg at 70 mph does not reflect cylinder deactivation to me. I'm thinking if the vehicle is running on 4, it would get a nice 30 miles. I don't know... I don't know why I even thought that. The cylinder de was a big buying point to me.

There is no need to say.... I paid off the G8 upon purchase.... I have a bank account that can pay for a Mercedes AMG, Lexus F, a Viper, Ferrari or even a Lamborghini and pay it off on purchase.... but it doesn't mean I would for it's not a smart purchase. I don't have the money I do by throwing it out the door for whatever. Smart buy and smart purchases will increase your bank account for other necessities in life. This is what I'm getting at in this thread.

Some people rather throw all their money into the vehicle and monthly payments..... where some other can just write a complete check for the vehicle. Which would you like to be is based on how you utilize your budget.

I better get one of those Tesla. I heard they give 122 per gallon! hahahah Problem is they are 2 seater, no trunk, and cost $90,000. Best part is that it 0 to 60 in 4 seconds. Ouch!

Matthew

RjG8 said:
So I have seriously considered the G8 gt (6.0 w 361 hp)and I almost gave in last week...
My hesitation comes from the 2009 release of the GXP sedan...
Click to expand...
See less See more
Reply
Save
Like
J
Comes down to this:

~$7-8K more for the GXP (Price plus Gas Guzzler Tax)

Mileage HWY IMHO will be lucky to get 22 mpg.

GXP has higher rear end ratio (tranny is same), and no AFM. Mileage in the city will be even worse than the GT.

Now at the track (dragstrip or roadrace etc.) GXP will outshine the GT. Decide if having that race capability is worth the extra price, extra insurance and probably $30-50 month in gas (say 12K miles a year).

I am having the same debate and haven't decided yet, but leaning toward the GT..just works better for Daily use. For me GXP price will play a factor as well.
Reply
Save
Like
F
spend the same 7-8k on a SC or Turbo (or twin turbo) ;)

Then you will keep MOST of the economy and absolutely destroy any stock GXP for the same price.

Just my opinion... thats what I plan on doing if I ever get rid of my GTP... Once you go forced induction...;)
Reply
Save
Like
1 - 14 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Pontiac G8 Forum
A forum community dedicated to Pontiac G8 owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
Pontiac G8 General Discussion Performance Modifications Wheels and Tires Brakes/Suspension/Chassis Pontiac G8 Exterior Discussions
Top