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Pontiac GTO



  • eliaselias Posts: 2,120
    $27k is what I paid in 05 after $3000 GM card rebate - so that price looks real good to me when it's without a GM card! The car runs fine on 87 octane but I see a ~10% mpg drop with 87 octane compared to 91+. So I only use 87 octane when the difference between 87 & 91+ is more than ~10%.
  • Thanks for all of the information. I forgot that I can also get a GM supplier discount from my firm. Don't know if it would make any difference or not.
  • Curious as to what "real world" gas mileage, city, mixed, or highway (of special interest to me) you owners of automatic GTO's are getting. I guess there might be a difference in "real world" MPG between 2004 and later, due to the additional H.P., so knowing your model year might help. Thanks!
  • I just found a Impulse Blue auto with matching blue interior with 18's for 28,517. I don't know what to

    I like em both!
  • My average for two years in 2004 with a stick is 14MPG (turning it in this Sat.)
  • eliaselias Posts: 2,120
    6-spd 05 - 27k miles - 20+ lifetime mpg since june 05. i use it mostly for highway driving, where it gets about 23 mpg.
    speaking of gas mileage, i guess we'll never know how the goats would do on the revised epa tests... if there had been an 07 goat, maybe it would have ended up with a gasguzzler tax on the 6spd too, and maybe the automatic gasguzzler tax would have gotten much larger! hmm, maybe there will be lots more cars with gasguzzler tax after the new EPA ratings are established ...
  • Last weekend I traveled from PA to NC and back over 1200 miles, mostly highway and averaged 26.7 MPG with my 23K 04 M6. Mixed rural driving nets around 20 MPG locally. AWESOME powerful car with great mileage and incredibly comfortable.
  • udhamudham Posts: 1

    Dealer offered me a 18" 6sp 2006 GTO for 27580 + tax,title, etc. Does it sound like a good deal. If it matters, I am in central NY, and I do own a non-gm vehicle, i.e. a toyota corolla. Orange w/ black interior.

  • if a new car, sounds very reasonable. rr70
  • hammen2hammen2 Posts: 1,313
    FYI there is now a dealer bulletin on replacing the defective (from the factory) struts on vehicles still on their lots. It's predicated on the vehicle's VIN number. Defective struts were used in assembly from mid-January 2006 until May 5, 2006.

    BTW, whomever's dealer told them their GTO was built in "late June" was wrong, as the GTO ceased production in Australia on 6/07/06. What may be confusing to many is that the "build date" stored in the GMVIS (vehicle information system) is the date the spoiler is put on at the port in Benecia, CA (5-8 weeks after final assembly, i.e. after boat transport), not the actual production date in Australia. You can get an idea of the assembly date of your vehicle by looking at the build plate underhood, or the sticker on the driver's door - should have the month/year listed.
  • hammen2hammen2 Posts: 1,313
    I get between 18 and 21 mpg on my automatic 2004 GTO, with a tune. If I do more city driving, it's closer to the lower number. Highway, closer to the higher number. Use the AC and/or defrost much, lower. I've heard the LS2 is worse on mileage. The 6-speeds get appreciably better (21-25 mpg) Whomever got 14 mpg with a stick must have been stoplight racing and driving in the city the whole time.

    This car requires premium unleaded. Sure, you can run on lower octane, but the engine will pull timing, get worse gas mileage, and possibly knock. Why would someone buy a $30k vehicle and not spend the extra $105*/yr. to put the proper gas into it? Seems to me that's the definition of "penny-wise and dollar-foolish".

    *Assume 15k miles/yr and 20 mpg, that's 750 gallons of gas purchased per year.
    Multiply that by the 14 cent difference between premum and regular (here; may be different in your neck of the woods) and you're talking about $105/yr.
  • hammen2hammen2 Posts: 1,313
    The GM in the Driveway program was discontinued on 10/1/06. Since the certificates (which are tied to a potential purchaser's DOB and last 4 digits of SSN) are good for 6 months, the certificates will be done by 4/1/07.

    There is another comparable program available (offering supplier pricing for everyone), but I don't know the details... maybe look around

    Anyone buying a new GTO should be able to get better pricing than supplier (like, invoice less incentives - some are even getting the holdback taken off as well).
  • ClairesClaires Chicago areaPosts: 1,221
    Hi, udham,

    You might also want to ask the folks in the GTO Prices Paid & Buying Experience discussion.


    Need help getting around? - or send a private message by clicking on my name.

  • eliaselias Posts: 2,120
    hammen man, some folks prefer not to pay even an extra $405/year if it's for no benefit aside from placebo effect!. the delta between 87 & 91+ on the east coast is as much as 70 cents per gallon at some stations - nice that it is 14 cents in your area.
    87 octane is especially great for winter driving in chevy V8s that are optimized for 91+. in addition to a few thousand goat-87-miles, i've put tens of thousands of 87 octane miles on various Z28 V8s over decades of winters - including a fall track run: 14.1 sec / 101 mph quarter mile with 94 automatic Z28...
    i called 87 octane "poor man's traction control" for my 85, 89, 94, 96 Z28s. (my 00 Z had real traction control)
    with 05 goat and 87, no knock, no noticeable power drop. it's fully supported by GM. USAtoday had an article a year or three ago - author interviewed reps from all the major manufacturers including ferrari/porsche/benz - bottom line is NO WORRY with 87 in any USA model car! the worst that can happen is 'reduced performance'.
    obviously if the engine knocks that would be bad. never happens. i don't run 87 in warm weather though, too much *pinging* for me, and the power loss can be noticeable.
    maybe we can discuss the difference between pinging and knocking. from what i understand, the ECM on all gassers adjusts the timing to try to get the engine to ping just the tiniest bit - audible to knock sensor but not to human ear - for best efficiency!?
    well, maybe you think i've damaged my LS2 and previous Z28 V8 engines and would want to avoid buying a used car from me! (not to mention all the other reasons to avoid that).

    happy new year from the GTO witness protection program, everyone -
    (that program entails putting us over-ticketed GTO drivers into VW TDIs - apparently the 87 octane was not enough to slow me down.)
  • paisanpaisan Posts: 21,181
    If you run 87 in a car tuned for 91 it will likely not ping or knock, because the ECU will dial back the timing. However, you'll likely get worse milage and poor performance.

  • eliaselias Posts: 2,120
    ya, paisan. i've benchmarked the (at most) 10% mpg drop, and maybe the hp drops from 400 to a measly (poor?) 360. thankfully the price delta between 87 & 91 has dropped down to 20 cents per gallon at many gas stations - so it's been all 91+ for my gto recently. cheers!
  • joe131joe131 Posts: 996
    Why worse mileage?
    The motor will be making less horsepower so maybe it will also be using less fuel.
    Seems fair to me.
  • paisanpaisan Posts: 21,181
    It's tuned for a specific octane, in this case 91, by putting a lower octane in you are forcing the computer to move back the timing and therfore the engine is not operating in it's peak efficiency spot. Hence the lower milage.

    Best way to save gas is just by controlling the right foot :) Of course I never do that but I don't mind burning gas though.

  • joe131joe131 Posts: 996
    But if you put in lower octane than that which would create maximum horsepower on premium, then the car is re-tuned for the lower octane, at least so far as ignition timing and presumably fuel/air delivery too.
    Do you think the valve timing would need to be changed too for top efficiency possible with the lower octane gas? And even if it does, these smart cars nowadays with continuously variable valve timing might also adjust that.
    Compression ratio? Is that a problem? I don't think so.
    Maybe if you don't press on the accelerator and brakes any harder with regular than premium you won't see any appreciable change in fuel economy? (But you won't get to your destination quite so quickly.)
  • paisanpaisan Posts: 21,181
    But I don't think that these push-rod engines are variable valve timing? Compression could be an issue as well.

    I would think if you are not hard on the gas, and put 87 in you should be ok but when I get mine, I'll probably run 91 for the few pennies more it costs.

  • Highway mileage on my just traded 04 did not vary whatsoever between 87 & 92/93 octane. Best MPG attained with 87 was 26.7 on a 1200 mile roadtrip. I never got any better then that even while running 93 octane.
  • joe131joe131 Posts: 996
    Wow! A 1200 mile gas mileage check. That is the kind of test that has some credibility.
    Anyone else keep careful records over a trip that long?
    (not relying on trip computer numbers)
    26.7 mpg is excellent mileage for a motor capable of 400 HP pulling a car the weight of the GTO.
    I get that same MPG in a similar weight car with less than half the horsepower at 75 mph on the interstate.
    What was your normal cruising speed?

    (oh wait, that is "only" 350 HP for a 2004, right? Haha. Your mileage sucks!)
  • I live in DC and get stuck in traffic a lot in rush hour. That is when the fuel consumption suffers big time. I average about 17mpg. My worst is around 14mpg (road works = major jams and a lot of idling and 1st gear driving).

  • eliaselias Posts: 2,120
    A 1200 mile trip, pffft! ;)
    I've done 1237 miles in one continuous daylight driving segment, although that was with a TDI from chicago->rocksprings wyoming not GTO.
    With 05 6-spd GTO (17" wheels) I've done boston->RTP->boston as well as boston->ftmyers->boston.
    MPG ends up being between 23 & 24 mpg. Usually on these long trips the mpg difference between 91+ & 87 octane is sometimes not noticeable at all. Other times it seems to be 9% or less.
    This week's autoweek has a photo of a test-mule Pontiac G8 and a Commodore SS. N I C E. Australia is awesome - I wish there was a road that went from Boston to there.
    G8 will be here in 2008 model year, including 6-spd trans and a monster V8, upper 300s for both torque & hp. I bet it will have cylinder-shutdown too. I wish GTO had that for those loooong highway cruises - for me there's no doubt that a long trip is way more comfy in GTO than in a TDI.
    btw, on GM or any vehicles with cylinder-shutdown, does it shutdown cylinders at idle too? thank you!
  • onyx70onyx70 Posts: 1
    The pontiac dealers are not telling the buyer about all the rebates,the dealers can discount to $5000 there as of 20 Jan 06 is $3000 in rebates,I have found this car priced from $24200-24788,the ones at $24200 were sold by the time I called...
  • just got a charcoal 6m 18 inch wheels for 26,600, at wedekind pontic in schenectady new york.(1/26/07)it had 265 miles on it.had my choice.nice place. can't wait for roads to get clear.!
  • paisanpaisan Posts: 21,181
    I was looking at that one online. I'm looking for the cyclone grey w/17s 6MT Hopefully will find one the first week in march. in the NY/NJ/Upstate NY Area. Figuring on paying about $25k for it.

  • eliaselias Posts: 2,120
    good luck, paisan. if you don't find a new 06 like that maybe you can find a used 05?
    personally i'm thinking of trading my GTO & XC90 SUV for one of the three new D-C diesel SUVs. driving a GTO on US public roads might just be too frustrating for me - all revved up with nowhere to drive fast... waaah!
  • mparis1mparis1 Posts: 107
    NHSTA investigaing all GTOs for exploding tires due to strut rubbing :lemon: :lemon: :lemon:

    P.S.where is robert ? we need him now? what should we due?
  • joe131joe131 Posts: 996
    All GTO models?
    Regardless of tire size?

    Guess they'll all get re-shod with those little tiny low-rider tires the mexicans like on their Chevys?
This discussion has been closed.