Real world MPG for "new" GTO?

[GTO JUDGE]

Originally Posted by ponjohn

Those numbers are encouraging.

Is it a stick?
Premium or 87?

John

It's an M6. I will use either 92 or 89 oct. I generally refill at 1/2 tank. I keep 92 in it mostly unless I see like a 10 cents or more price difference between 92 and 89. I will then go with the 89. Mixing between the 2 the octane should be about 90-91. I have never gone with a straight tank of 89.

The best ever mileage I got was a 50/50 mix. On the way to Saratoga and back was all 92. I will add I did not drive aggressively when I got those numbers. I have read where others have gotten similar mpg's.

[6804gto]

Originally Posted by Dick Boneske

My automatic A4 '04 gets 20-21 overall. Cruising freeway at 70 mph gets me 23-25. If I drive it aggressively, 18-19 mpg. Not bad compared with my '64 GTO that got 13-15 mpg on the highway when it was new in 1964. I remember bragging about how good that was when driving to Niagara Falls for my honeymoon in 1964--all freeway. Come to think about it, it wasn't bad for a Tripower, 4 speed, with a 3.90 gear. Most of the time on the freeway, the tach was at 4000 rpm (80 mph).

Thats exactly what my A4 04 got!

[goatnut]

My 06 6spd with a JBA cat back - not much louder than stock, K & N air intake and predator 93 octane tune with 160 degree thermostat averages 18 mpg around town driving somewhat agressive at times - hard not to want to drive a car like this. and gets 28 mpg on the highway. And I always check it after making 3 to 5 passes down the strip it shows 17 mpg.
This is one car you wont regret buying its quite inside and tight - no rattles,handles like its on rails rides excellant and runs like a scared rabbit. I wouldn't trade it for any other car out there its the best bang for the buck! Check out LS2GTO.COM lots of info on that site.
If you do buy one let us know what you get.

[Sirrotica]

I always use 92 or 93 octane as lower octane pulls timing out of the engine. It had 89 in it when I bought it and it dropped the performance down some, enough that you could feel a difference. I have always used premuim in it since I bought it for that reason. And yes
I have a 2nd generation T/A and a 4th generation T/A, the 05 GTO handles as good as either of them. and does it without rattles and squeaks too. I have stock exhaust on mine and its fine for me. I got the need for loud exhaust out of my system when I was in my teens.

[Dick Boneske]

I usually use 87 octane in my '04 GTO. Can't feel a difference in performance between 87 and 91 octane gas in that car. Mileage seems better with 87 octane.

Also use 87 octane in my '07 Grand Prix GXP V8, which recommends premium fuel. Same story--can't feel performance diff between 87 and 91 octane. On the '64 GTO's, however, you barely can drive it unless it has 91 octane fuel. Pings like crazy with 87 or 89 octane.

[87LC2]

I've gotten over 24 mpg with my automatic 2006. Normally I get 22mpg per tank with mixed driving.

Aggressive city driving can be near 15 mpg.

Magnaflow cat-back bumped up my mileage, as did the Volant CAI and Predator tuner.


Test drive one, then pick a color, you'll be sold.

[GTO 06]

what does it matter....

I didn't buy mine with any thoughts to gas prices... I have to use 93 octane.

and it's not a garage queen.. get out and drive them boys and girls....

who cares about the MPG...

I got a superchager to imporve my MPG.....hehehhee


Morty

[GTO JUDGE]

Hey Morty!

[robscar]

Hey Morty!

[dragula81]

I'm coming into this thread a little late but my '06 M6 gets about 26 on the highway and only about 14 in town but that's because I enjoy the sound too much. It can be 100 degrees outside and I'll still ride around with the AC on but the windows down just so I can hear the exhaust.

I have Dynatech LT's, Hi-flo cats, X-pipe, Magnaflows, electric cutouts, and custom dyno tune. 388rwhp.

[pontiacbubba]

I have an M6 '06. I get 18-21 mpg back and forth to work. This involves very little stop and go driving so its a little biased. The best hwy mpg was a run up to PA to see my Dad with just me in the car and the normal luggage I got a best tank of 28 mpg. Last time ran up there with 3 people and all our luggage the best I got was 25.6 mpg. So it CAN do great on the hwy depending on how you drive it.