Gas Mileage?

[G6xxClAsSiFi3D]

What kind of gas mileage are the 2.4s suppose to get city/hwy? Cause i swear im at the gas station almost everday, and i dont drive that much...

also can we put 89 octane in or should i just stick with 87?

[WoodburyMan]

Re: Gas Mileage?

From Pontiac's site.

* 2.4L engine:
22/30 (city/highway mpg)

* 3.5L engine (GT):
17/26 (city/highway mpg)

* 3.9L engine:
15/22 (city/highway mpg)

* 3.6L engine:
17/26 (city/highway mpg)

These are the new 2008 EPA numbers. I know for 2007 they listed the 3.6L as 20/28mpg... and the 3.9L's were rated at 16/26mpg for 2006 when they were in the GTP's, now they're just in the Verts.

It's funny, though since they rated our 3.9:'s as 16/26mpg in 2006, but now they list it as 15/22 which IMHO is muuuuch closer to what I get. In winter I get 17mpg city and now that I'm doing alot of highway driving to and from school I'm getting 22mpg cosistantly, and if I didn't have to drive through town to get home I'd get 24mpg easy.

[ahuhn]

Re: Gas Mileage?

go ahead and put whatever gas you want in it (87 or above)doesnt hurt anything doesnt really help any thing either unless you have a tune

[WoodburyMan]

Re: Gas Mileage?

For the 4 banger I wouldn't bother putting anything in but regular 87. The only time I used to put better gas in my Sunfire or my G6 before my tune was if my car sat for a long time and there was still old gas in the tank, then I'd put 89 or something in.

[jnak]

Re: Gas Mileage?

The recommended fuel in the 2.4 in the G5/Cobalt is premium (although the manual says it's OK to use regular). I would assume the 2.4 in the G6 is the same.

[WoodburyMan]

Re: Gas Mileage?

The recommended fuel in the 2.4 in the G5/Cobalt is premium (although the manual says it's OK to use regular). I would assume the 2.4 in the G6 is the same.

Hmm. That's odd. I know the 2.0L SS S/C needs 93 Octrane or 91 Octane, my co-worker has one....

[GTPGuy82]

Re: Gas Mileage?

Well those engines are high output engines. I find it funny that the G5/Cobalt manual recommends premium..

[grfnkl]

Re: Gas Mileage?

I used to put in Premium in my 88G/A But that when gas was a whole 0.89 cents per gallon.... I think my 6 has seen "plus" once and regular the rest of the time.

I understand the Colbalt SS requiring the premium, my girls Acura RSX type-s requires it as well for its little 4 banger i-vtec.

[WoodburyMan]

Re: Gas Mileage?

I used to put in Premium in my 88G/A But that when gas was a whole 0.89 cents per gallon.... I think my 6 has seen "plus" once and regular the rest of the time.

I understand the Colbalt SS requiring the premium, my girls Acura RSX type-s requires it as well for its little 4 banger i-vtec.

Gas was already $2.50 when I started driving

[selfdestruct80]

Re: Gas Mileage?

* 3.9L engine:
15/22 (city/highway mpg)

Wow, i get over 30mpg highway (60-65mph) and around 20ish city in my 3.9. All I have is a CAI. however if i'm driving around 80-85 like normal who knows what the mpg is. Never bothered to check, nor do I want to find out.

[grfnkl]

Re: Gas Mileage?

I used to put in Premium in my 88G/A But that when gas was a whole 0.89 cents per gallon.... I think my 6 has seen "plus" once and regular the rest of the time.

I understand the Colbalt SS requiring the premium, my girls Acura RSX type-s requires it as well for its little 4 banger i-vtec.

Gas was already $2.50 when I started driving

It's worse when you know you used to pay only 89 cents and now have to price shop to find a place that has it cheap for 2.89... i even caught myself saying one day, "back when i first started driving gas was only .89cents per gallon.... "

[uscboy]

Re: Gas Mileage?

The DIC in our 07 GT Sport vert (3.9L) always evens out at 19.9 mpg.

Haven't actually used a trip meter yet to see if it's right though.

[grfnkl]

Re: Gas Mileage?

The DIC in our 07 GT Sport vert (3.9L) always evens out at 19.9 mpg.

Haven't actually used a trip meter yet to see if it's right though.

unfortunetly it normally is correct or within 2 or 3 tenths of a mile correct. You do have to reset it though at fillups to have it more accurate.

[WoodburyMan]

Re: Gas Mileage?

The DIC in our 07 GT Sport vert (3.9L) always evens out at 19.9 mpg.

Haven't actually used a trip meter yet to see if it's right though.

It'll be off. Mine always reads at least .5 higher than what it really is.

I drive 80ish on the highway. I could see getting better 26mpg or more if I did 60 the entire way, but it wouldn't involve staying in the fast lane.

$2.90 where!?!? Regular here is still $3.19, I paid $3.39 for 93 Octane.

[grfnkl]

Re: Gas Mileage?

come down to Jersey, I paid 2.81 for regular at a name brand gas station on monday. Normally I go to the no name stations and get gas about 5 cents cheaper.