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2008 Pontiac G8

1265 messages,  Last post on Jul 21, 2009 at 10:14 AM

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What is this discussion about? Pontiac Grand Prix, Pontiac G8, Future Vehicle, Sedan

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#1023 of 1265 Re: looking forward to the results [pao] by murphy4 Nov 26, 2008 (11:52 am)
Replying to: pao (Nov 26, 2008 11:41 am) not really interested in the "4 bangers".....I want a confortable highway cruiser that I can put the 3 kids in the back when needed. My concern is if gas heads back up to $3 or higher I don't want to be stuck with a car that gets poor mileage. Replies to this message: rayainsw (Nov 26, 2008 12:22 pm) murphy4 (Nov 26, 2008 4:57 pm) paisan (Nov 26, 2008 7:22 pm)
#1024 of 1265 poor ? Re: looking forward to the results [murphy4] by rayainsw Nov 26, 2008 (12:22 pm)
Replying to: murphy4 (Nov 26, 2008 11:52 am) What is your definition of "poor mileage" ???? Replies to this message: murphy4 (Nov 26, 2008 4:57 pm)
#1025 of 1265 Re: MPG ( guesses ) [rayainsw] by circlew Nov 26, 2008 (3:38 pm)
Replying to: rayainsw (Nov 26, 2008 9:57 am) Have a safe and satisfying drive ans a Happy Thanksgiving! Best of luck with your new ride! It sounds fantastic!   Regards, OW
#1026 of 1265 Re: poor ? Re: looking forward to the results [rayainsw] by murphy4 Nov 26, 2008 (4:57 pm)
Replying to: rayainsw (Nov 26, 2008 12:22 pm) i would like to at least get 25 mpg. I have a smaller car now but want something larger...spend a bit of time each week on the road. The GT is very tempting.
#1027 of 1265 Re: looking forward to the results [murphy4] by paisan Nov 26, 2008 (7:22 pm)
Replying to: murphy4 (Nov 26, 2008 11:52 am) My guess is that if you are concerned about $3.00 gas that you should probably not be looking at anyV8 engined cars. If your budget is so tight that a change in gas prices to $3.00 will seriously impact you, really a less expensive car taht gets better milage should be at the front of your shopping list.   Not trying to be mean, but trying to be realistic.   -mike Subaru Guru and Track Instructor
#1028 of 1265 Re: MPG ( guesses ) [rayainsw] by paisan Nov 26, 2008 (7:25 pm)
Replying to: rayainsw (Nov 26, 2008 9:57 am) Also Ray, don't forget your car is new, so you won't see max MPG until you hit about 9k-10k miles on it. Modern cars take that long to get to max MPG.   -mike Subaru Guru and Track Instructor
#1030 of 1265 Mileage with AFM... by white6 Nov 27, 2008 (7:50 am)
FWIW, my 08 GMC Sierra SLT shows AFM engaged when cruising at 70-75 mph on anything other than uphill terrain (or driving into a stiff headwind). I'm sure it weighs quite a bit more than a G8 GT and is significantly less aerodynamic to boot (plus heavy 20-inch wheels/tires). The AFM also kicks in at speeds as low as 38 mph. Of course, all this could be affected by final drive ratio; my GMC has a 3.73 rear gear (but only a 4-speed auto). Could be a situation where driving 73 instead of, say, 76 could make a noticeable difference.
#1031 of 1265 MPG by mrpushrod Nov 27, 2008 (3:49 pm)
The cylinder shutdown makes a big difference. In general it won't be activated at 70+ MPH except during slight downgrades. I really helps when active. I have put a total of 12 k miles on two G8s (an 08 and a 09). The 25MPG figure is fairly accurate and it is hard to get better at a reasonable speed.   Funny thing, I can coax 33-34MPG easy out of my C5 vette 6 speed Manual. It is even easy to coax good city mileage out of the vette by letting it lug in a gear too high. Nobody believes these numbers but I have proved it several times. I bettered a Toyota Matrix on HW MPG once after the owner challenged me. Replies to this message: circlew (Nov 27, 2008 6:44 pm) elias (Nov 28, 2008 12:31 pm) circlew (Nov 28, 2008 1:21 pm) and 1 more...
#1032 of 1265 Re: MPG [mrpushrod] by circlew Nov 27, 2008 (6:44 pm)
Replying to: mrpushrod (Nov 27, 2008 3:49 pm) That's what less wind resistance and weight will do and the M/T driven right is just icing on the cake! Everyone should drive a 'vette!   Regards, OW Replies to this message: elias (Nov 28, 2008 12:31 pm) circlew (Nov 28, 2008 1:21 pm) paisan (Nov 28, 2008 4:30 pm)

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