WELCOME!
   

Go Back   PY Online Forums - Bringing the Pontiac Hobby Together > PY Welcomes 2008-09 G8 owners > G8 General Tech/Discussion

G8 General Tech/Discussion G8 general tech and discussion area.

Reply
 
Thread Tools Display Modes
  #1  
Old 10-16-2010, 09:46 PM
ponjohn's Avatar
ponjohn ponjohn is offline
Ultimate Warrior
 
Join Date: Mar 2002
Location: Connecticut
Posts: 9,530
Default G8 V8 MPG

What are you guys getting for MPG, A6, M6, GT, GXP?

I'd like to upgrade my DD to something with balls. Tired of the Outback.

Thanks-
John
Reply With Quote
  #2  
Old 10-16-2010, 09:55 PM
The Boss's Avatar
The Boss The Boss is offline
Ultimate Warrior
 
Join Date: Mar 2005
Location: Newtown, CT
Posts: 15,454
Default

Winter's coming, wait til spring.
__________________
Some guys they just give up living
And start dying little by little, piece by piece,
Some guys come home from work and wash up,
And go racin' in the street.


Bruce Springsteen - Racing In The Street - 1978
Reply With Quote
  #3  
Old 10-20-2010, 08:39 AM
HUMBLER's Avatar
HUMBLER HUMBLER is offline
Ultimate Warrior
 
Join Date: Mar 2002
Location: Westerville, OH
Posts: 1,441
Default

Uh, the way i drive my G8GT....14, 16 if I'm lucky! Get one, get a tune and you'll do low 20s easily. Whatever you do buy now, deals abound especially if you are looking for a summer only G8 setup, slap on some blizzaks and go!
__________________
1969 Judge (Liberty Blue / Blue, 4SPD)
Reply With Quote
  #4  
Old 10-21-2010, 07:01 AM
FHummel FHummel is offline
Senior Member
 
Join Date: Nov 2005
Location: Villa Rica, GA
Posts: 175
Default '09 G8/GT mpg A6 V8 with 26000 miles on car

My car is bone stock.
Conservative driving nets me 20mpg plus just 'bopping around'. Best highway driving on interstate trip netted 28.7 mpg (that's my best so far) using cruise control as much as possible. These are calculated mpg's not from the DIC - tank topped off at fillups and calculated mpg re. odometer miles driven using 87 octane gas. Keeping tire pressures at optimum (for me): 35 psi fronts and 38 psi rears - cold pressure - contributes to good mileage due to low rolling resistance. Conservative starts from a stop and letting the car slow down naturally when having to stop always helps. Remember that anytime you brake you are absorbing power used to move the car forward, thereby wasting energy (and gas).
Yes, I know that this sounds like boring driving, but the result is better gas mileage, extended brake pad life, tire life, and transmission life. I'm not saying I don't step on it occasionally because I do, but that's when it's 'needed' for whatever reason (you figure that out). I've had hi-performance cars most of my more than 57 years of driving life and still enjoy the 'surge' when the opportunity presents itself, but constantly driving a machine in 'performance mode' because you can doesn't reward you with good mpg
Have fun, but above all be safe.
grandpop09

Last edited by FHummel; 10-21-2010 at 07:13 AM.
Reply With Quote
  #5  
Old 10-19-2011, 03:38 PM
Turbo Indian's Avatar
Turbo Indian Turbo Indian is offline
Senior Member
 
Join Date: Dec 2004
Location: United States Of The Offended
Posts: 156
Default we just traded

we just traded the wife's 99 C5 for a 09 G8 GT. we needed something that is capable of towing our 21' Checkmate, & a G8 is the only vehicle out there that can tow the boat & give me a little bit of excitement.
__________________
67 firebird, RPE built 274ci TA Performance Buick V6 block, 8.89@154.85 with just a few bolt ons, & a 275 DR.
anyone can restore 1 it takes a real man to cut 1 up!
99 Western Star 500hp 52' lowboy Mid Atlantic Heavy Hauling
Those Old Timers That Think...

There Is No Replacement For Displacement
Do Not Know What Boost Is.
Reply With Quote
  #6  
Old 10-19-2011, 09:36 PM
Transporter Transporter is offline
Chief Ponti-yacker
 
Join Date: Feb 2008
Location: Glasco, Kansas
Posts: 980
Default

2009.5 GXP A6 10,000 miles I can average right at 22/23 on the interstate long trips, that at 70+

Have no idea on around town driving as the closest "town" is 50 miles away.
Reply With Quote
  #7  
Old 10-21-2011, 11:42 AM
HUMBLER's Avatar
HUMBLER HUMBLER is offline
Ultimate Warrior
 
Join Date: Mar 2002
Location: Westerville, OH
Posts: 1,441
Default

Quote:
Originally Posted by Turbo Indian View Post
we just traded the wife's 99 C5 for a 09 G8 GT. we needed something that is capable of towing our 21' Checkmate, & a G8 is the only vehicle out there that can tow the boat & give me a little bit of excitement.
Pics of said tow vehicle in the act? Love it!
__________________
1969 Judge (Liberty Blue / Blue, 4SPD)
Reply With Quote
  #8  
Old 10-21-2011, 08:01 PM
Turbo Indian's Avatar
Turbo Indian Turbo Indian is offline
Senior Member
 
Join Date: Dec 2004
Location: United States Of The Offended
Posts: 156
Default

Quote:
Originally Posted by HUMBLER View Post
Pics of said tow vehicle in the act? Love it!
well since I told the salesman at the stealership the car better be right, we can not pick it up until Sunday or Monday. then I still need to build a hitch for it since you can not buy a hitch in the US that is capable of towing 3500 lbs.
__________________
67 firebird, RPE built 274ci TA Performance Buick V6 block, 8.89@154.85 with just a few bolt ons, & a 275 DR.
anyone can restore 1 it takes a real man to cut 1 up!
99 Western Star 500hp 52' lowboy Mid Atlantic Heavy Hauling
Those Old Timers That Think...

There Is No Replacement For Displacement
Do Not Know What Boost Is.
Reply With Quote
  #9  
Old 09-27-2012, 02:03 PM
Ccass's Avatar
Ccass Ccass is offline
Administrator
 
Join Date: Dec 1999
Location: Max Performance Hatfield, Pa
Posts: 4,692
Default

Got 27 mpg doing 70mph on a 60 mile trip. Stock.
__________________
---------------------------
Fool Around, Get Hurt, Don't come Crying to me.
Reply With Quote
  #10  
Old 09-27-2012, 07:03 PM
Harry71GTO's Avatar
Harry71GTO Harry71GTO is offline
Member
 
Join Date: Nov 2009
Location: Heartland, USA
Posts: 34
Default

My 09 G8GT gets 18MPG around town and up to 25MPG on the highway. I drive 80-85 MPH so YMMV.
__________________

1971 455 H.O. Tropical Lime
2009 G8GT Black
Reply With Quote
  #11  
Old 09-27-2012, 09:28 PM
goatnut's Avatar
goatnut goatnut is offline
Senior Chief
 
Join Date: Jan 2004
Location: PA
Posts: 475
Default

Quote:
Originally Posted by Harry71GTO View Post
My 09 G8GT gets 18MPG around town and up to 25MPG on the highway. I drive 80-85 MPH so YMMV.
Thats exactly what my 09 GT is getting. Sounds like our driving styles are the same lol. Some mornings its tripple digits just depends on traffic. Its nice that you dont have to beat on it to get it there. It just wants to go!
__________________
69 GTO Judge
69 Firebird Trans Am clone
76 Trans Am 400 4spd.
06 GTO M6 18's red/red - 1 OF 188.
09.5 G8 GT Stryker blue met. premium with sport pkg.
Reply With Quote
  #12  
Old 10-01-2012, 08:49 PM
goatnut's Avatar
goatnut goatnut is offline
Senior Chief
 
Join Date: Jan 2004
Location: PA
Posts: 475
Default

Highway ride home from work today. Normal driving @65mph
Attached Thumbnails
Click image for larger version

Name:	2012-10-01_10-52-11_306.jpg
Views:	289
Size:	29.4 KB
ID:	299121  
__________________
69 GTO Judge
69 Firebird Trans Am clone
76 Trans Am 400 4spd.
06 GTO M6 18's red/red - 1 OF 188.
09.5 G8 GT Stryker blue met. premium with sport pkg.
Reply With Quote
  #13  
Old 03-07-2013, 02:37 AM
Fly GTO's Avatar
Fly GTO Fly GTO is offline
Member
 
Join Date: Jun 2006
Location: AR (now)
Posts: 75
Default

G8 GXP 6M, average 20 mpg. Have gotten 25.6 best on Hwy and about 16 worst in a lot of "spirited" stop & go driving.
Reply With Quote
  #14  
Old 10-02-2013, 12:05 PM
thechef's Avatar
thechef thechef is offline
Late Model Moderator
 
Join Date: Oct 2013
Location: CT
Posts: 27
Default

my MPG is usually at 18-20 and I drive 80mph everywhere lol
__________________
2009 Stryker Blue G8 GT Roto Fab CAI and OBX Axleback, Cross Drilled & Slotted Rotors, HAWK Ceramic Performance Pads
2001 WS-6 Edelbrock Heads, KOOKs 1 7/8 headers and ORY, ESP 228 cam, SLP UD, F.A.S.T 92, NW 92 TB, NX Plate kit, SPEC 3X, Full BMR Suspension, MOSER 9in
Reply With Quote
  #15  
Old 12-18-2013, 03:07 PM
LordPancake LordPancake is offline
Junior Member
 
Join Date: Dec 2013
Location: Oak Ridge, TN
Posts: 3
Default

08 GT with CAI and a tune.

I run 93 octane because of the tune, and I can get 26-27 on a long trip. Normally high teens/low 20s in daily mix of highway/surface streets.

Here is the interesting thing, I bought the tuner solely to turn OFF the annoying DOD (the thing that makes it a 4cyl to "save gas") and my MPG didn't move an inch. If anything the 93 tune probably moved it up a little.

So for MPG, you can get away with a tuner and slapping that bad boy in 8cyl all the time and not lose a thing (good excuse anyway).
__________________
-Jon

2008 Pontiac G8 GT (One of those LM guys)
1967 Chevrolet Camaro (ugh and a Chevy guy)
1973 Jeep CJ-5
2000 Jeep Cherokee Sport (DD)
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:22 AM.

Featured Vendors


Advertising Info