What's your fuel economy? [Archive] - GrandAmGT.com Forum

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Rogue9
01-31-2007, 10:08 AM
Just curious what you guys get for fuel economy..

2001 V6 = approx 400 km per tank. (apprix 248 miles a tank)

awaadster3
01-31-2007, 10:32 AM
sounds about right, as long as i keep it between 2- 2.5k rpm wise

pyro
01-31-2007, 10:45 AM
330-340 miles to the tank 50/50

ledfreak
01-31-2007, 10:51 AM
256 Miles to a tank if I keep it over 130 KPH on the autobahn.

305-360 miles if I keep it between 120-130 KPH (depends on weather & traffic too)

Mike Jung
01-31-2007, 10:53 AM
Mine = the suck right now.

3400 series 3.4L V6 engine

for Jan '07:
12.1L / 100km = about 19.4 miles per US Gallon

Average for all of '06:
11.2L / 100km = about 21 miles per US Gallon

Best in '06:
9.7L / 100km = about 24.2 miles per US Gallon

Worst in '06:
13.8L / 100km = about 17 miles per US Gallon

Note:
I use Bridgestone Potenza RE950 tires in the summer & Bridgestone Blizzak LM-22 tires in the winter.
These tires are stickier than stock; & have gotten less gas mileage with them than with the stock GoodYear Eagle LS 225/50/16" tires

Rogue9
01-31-2007, 11:06 AM
I swear I could put 400-450 km a tank before. I just fixed an exhaust leak and a faulty transmission solenoid. Just wondering if my milage has gotten better

badboy2451
01-31-2007, 11:37 AM
i get like 230 at most...my mpg FTL

Gizm0815
01-31-2007, 01:00 PM
^ same here

nascarnate326
01-31-2007, 01:26 PM
about 31 mpg with my cavi z24. :)
5 speedz ftw

my GA was about 22-26 mpg

rocketfast123
01-31-2007, 02:15 PM
2001, 2.4, 78k

21mpg mix

Mirage85
01-31-2007, 02:19 PM
~24mpg on average, sometimes more, sometimes less, but thats the usual.

jackal2000
01-31-2007, 02:41 PM
on my last road trip i got 29mpg (2000-3400). i have 97k miles on the chassis, almost 5k miles on the rebuilt motor. i havent figured it out for city driving yet.

digitalballz
01-31-2007, 08:30 PM
Right now about 30 mpg with warming my car up in teh morning and after work. Summertime..... a little bit less!!!

GrandAmGT1996
01-31-2007, 08:33 PM
I never actually found out what the POS celica gets to a tank. I'll have to reset my trip odometer on Friday when I fill it up

drakesrevenge
01-31-2007, 08:35 PM
2001 GAGT1

Driving hard--about 22mpg 95-100mph

driving just over the speed limit 75-85 mph
24-25.5 mpg

who know what it would be if i ever went the speed limit!!??

188,000 miles and going!

mainly highway miles

bballr4567
01-31-2007, 09:04 PM
I get around 20-21 city but Im always on it.

The last road trip I took I got 34 MPG and over 400 miles on the tank. Was rather happy.

cmtapanes
01-31-2007, 09:06 PM
On highway I get 340 and I drive 70miles to work (both ways) everyday and I get around 280 - 300 on the city.

mattamd_xp
02-01-2007, 12:09 AM
I typically get around 24mpg mixed (mostly city) and on the last road trip I took (2500 miles) I got an average of about 30 mpg keeping the speed around 70-75. And that is with a 3.4L V6

tomh
02-01-2007, 11:10 AM
i get 24 mpg.. used to get 30 *sigh* the good old says.. lol

even when i set the cruise at 70-72 and driving 200 miles non stop highway i still get piss poor gas milage

blkgagt
02-01-2007, 10:30 PM
Damn.... Everyone's here is sounding really good for me. I usually only get between 15 and 17. Thats just home-school-work and about 10 miles a day on highway at 75mph. Last summer(06) I filled it up at this Caseys right next to the highway, went to a little town about 15 miles away with windows/sunroof down and the air off with the cruise set at 70 and I came right back and filled it up and got 31.9 MPG. Since then I have rarely seen 19.... *sigh*

R.C.

bballr4567
02-01-2007, 10:58 PM
RC that car needs a tune up like something fierce.

timberwoof
02-02-2007, 05:29 AM
right now its about 150 miles per tank, but I have a messed up FPR.

Before I was getting about 300 per tank.

kse73
02-02-2007, 07:17 AM
City 14.7 mpg Highway 20 mpg

But I drive like a frickin animal.

Chaos
02-02-2007, 08:01 AM
I get about the same.. 400 KM to a tank.. and its an 04 GT Coupe.. ALOT LESS if I go to fast!! LOL

Mike Jung
02-04-2007, 11:10 PM
Just topped up my tank.

It is -20C / -4F air temperature outside right now here (according to my alcohol theromator, that is in my car).
Winds are gusting at 50km/h (31mph).
Wind Chill is about -35C / -31F

Driven in a day: 93.6 km / 58.2 miles

Gasoline used: 14.279 L / 3.772 US Gallons

Gas Mileage: 15.2 L / 100km = about 15.4 miles per US Gallon

The cold FTL ;) lol

PS: You really can tell if it is -20C/-4F or below:
When the power steering pump starts whining, during a "cold start" lol

2002gagt1
02-06-2007, 01:20 AM
I took a 330 mile trip and had a gallon left afterwards, and included was the car idleing for about ~1 hour or so, so I get pretty awesome gas mileage, better than my 03' Kia Spectra, pretty sad considering the kia has a 1.8l and the GA has a 3.4l

1gt2nvf3
05-17-2007, 09:15 PM
The best I have ever done is 31 mpg on a trip to Columbus. I keep my tires @ 40 psi for better gas mileage. I work at a garage so i have plenty of spare tires to put on and I hate the ones I have on right now. I'm trying for 400 miles on this tank, should be easy I just have to go 50 miles after the gas light comes on, and since every time I run it all the way to E it still only takes about 12.4 gallons, i should have 2 gallons left. If not AAA is coming to the rescue. P.S. Kia's are GARBAGE. ha ha

WeibSunder
05-17-2007, 09:49 PM
Tires at 38 PSI

When I drive to Hampton, VA to visit my bro I pack the gas in my tank until it starts to run over. I usually travel between 80-82 mph and stop twice to let the car cool for a few and to lower the lacix and increase my nicotine (I don't smoke in my car).

It's 286 miles from my door to my brothers.

When I get to his house, my gas gauge reads one needle's width above 3/4's of a tank of gas. So going to his house I get about 31-33 miles to the gallon, and I calculated that my daily drive from a stuffed tank to my gas light coming on I get about 15-17 mpg.

silverbullet51
07-10-2007, 08:13 PM
i get about 220 miles to a tank in winter and 270 in summer. i would love to get at least 300. i don't drive hard unless i have to (he he)

bballr4567
07-10-2007, 09:51 PM
Seeing how this was bumped up Ill post my latest MPG. I got 32.2 MPG while going 374.8 miles and using 11.64 gallons of gas. This was all highway mileage though but considering it was damn near 100 degrees out its damn impressive.

el nino
07-10-2007, 10:11 PM
i just got 291 on a full tank. this is mostly city driving and only one highway cruise. this is pretty good considering that i need a tune up.

williamGT
07-10-2007, 11:32 PM
well I'm going on holidays in 12 days I guess ill find out.
between 500-600km to a tank thats I was going 110KM/H

cardude007617
07-11-2007, 12:08 AM
will a cai help highway mileage as well?

Ajaxus
07-11-2007, 12:14 AM
will a cai help highway mileage as well?

a CAI does help mileage..the problem is people like the sound of it so much they tend to not drive the same and instead floor the gas more often..resulting in worse mileage. but if your driving style doesn't change and you use the cruise control alot, you'll see a slight increase in mileage even though it won't be enough to truly "pay out"

DomesticFreak
07-11-2007, 12:20 AM
I work for Domino's so it's pretty much all city driving. I also drive like a **** head, so that means the pedal is usually on the floor.
Currently, I get about 19 mpg when I'm working. If I'm driving Highway, I get about 27, cause I use cruise all the way down, and when cruise is on, I don't drive like a douche bag.

cardude007617
07-11-2007, 12:38 AM
so how much of an increase are we talking, real world here with new spark plugs as well not fouled up old ones

Ajaxus
07-11-2007, 12:54 AM
so how much of an increase are we talking, real world here with new spark plugs as well not fouled up old ones

fractions of a mile

ProtonXX
07-24-2007, 11:55 AM
360 a Tank. It mysteriously dropped to 300 after a tine up. I think the guy put cheap plugs in. Gonna swap them out with halos one day.

Wts1277
07-24-2007, 11:59 AM
i drive 60 miles round trip to and from work at about 80 give or take and i get 270 miles to the tank

timka86
07-24-2007, 01:20 PM
87 octane - about 16-18 mpg city
89 octane - about 19-20 mpg city
93 octane - ~22 mpg city

89 highway - 26.5

That's with a tune from MP Racing, and 180* stat, CAI.

Doesn't really matter how hard i drive it, usually get the same gas mileage, I'm often over 3-4k RPM.

I tried driving nice, doesn't do anything for gas mileage.

And at 93 Octane, it rips much better, and I get better economy, and I counted the price per mile for each octane rating, and it's still worth buying premium.

lastyear4gt
07-24-2007, 02:09 PM
450-500Km/highway SUPERCHARGED!

Mike Jung
07-24-2007, 02:16 PM
Toronto, ON to Glenview, IL:
3400 V6 engine is in my GA.

Distance traveled: 847.7 km / 526.7 miles
Gasoline used: 65.324L / 17.257 US Gallons

= 30.5 US mpg, 13 km/L, or 7.7L of gasoline used for every 100 km traveled.

justinw
07-24-2007, 04:55 PM
Average rural driving: 27 MPG: 350 miles/tank (light turns on at this time)

02' 2.2L stick

Pinnacle
07-24-2007, 04:57 PM
Toronto, ON to Glenview, IL:
3400 V6 engine is in my GA.

Distance traveled: 847.7 km / 526.7 miles
Gasoline used: 65.324L / 17.257 US Gallons

= 30.5 US mpg, 13 km/L, or 7.7L of gasoline used for every 100 km traveled.

AWSOME

Falke401
07-24-2007, 05:01 PM
i get about 20 MPG all city driving. Lots of stop lights.
2003 GA GT 92K miles.

PhantomLover007
07-24-2007, 05:09 PM
I guess between 250 and 270 mpg with mixed driving.

DrFabulous
07-25-2007, 06:06 AM
24-25 city, 30-32 highway.

01 2.4 auto with intake/exhaust

timka86
07-25-2007, 07:14 AM
24-25 city, 30-32 highway.

01 2.4 auto with intake/exhaust

all you guys with four bangers get way better gas mileage.

I guess there's an upside to everything.

gtdado4
07-25-2007, 07:37 AM
South Bend, IN to DC and back - 29.7mpg (avg speed ~70mph w/ fram air filter)
South Bend to Indy and back - 31.4mpg (avg speed ~60mph w/ just cleaned k&n filter)
City Driving ~19mpg (lots of lights on my way to work)

V6 doesn't do too bad on the highway.

DrFabulous
07-25-2007, 07:34 PM
all you guys with four bangers get way better gas mileage.

I guess there's an upside to everything.

Combine that with a much larger aftermarket, available manual tranny, and no LIM leak..... makes you wonder who would buy a V6, doesn't it? lol

Panacea
07-25-2007, 09:51 PM
My Mazda gets about 28mpg 30/70 driving. Straight interstate fluctuating between 65-69mph, I got 34.5 mpg. Was at 313 miles or so and had more than a 1/4 tank left. I could easily get 450 miles per tank.

The '99 GT got on average 18-21 city and averaged 29-31 mpg on highway; however, I got 33mpg (360 miles) once in the winter time going to Chicago. I was also running the car idle for about 15 minutes while waiting for a concert.

bryanw0087
07-26-2007, 11:41 AM
i have 2000 3.4L v6, and i get around 270 a tank, but i never let it get down to where the lights on i average 24~ mpg sometimes more sometimes less, i got 24 mpg even after i go the slp exhaust system put on and reved it like 1092321939 times for all to hear haha

drakesrevenge
07-30-2007, 09:55 AM
now i have 210,000 on my 2001 GAGT1,
just filled up this morning, figured 25 mpg, driving like a bat out of hell!

i have been experimenting and found that if i accelerated at a much slower pace, but still cruise at 85mph on the interstate, that i was getting 28-30mpg.

AaronGAGT
07-30-2007, 03:57 PM
i have 2000 3.4L v6, and i get around 270 a tank, but i never let it get down to where the lights on i average 24~ mpg sometimes more sometimes less, i got 24 mpg even after i go the slp exhaust system put on and reved it like 1092321939 times for all to hear haha

270 a tank but 24 mpg? For 2000's, its a 14.3 gallon gas tank and you're not even lettin the light come on. Lucky to get 20 mpg let alone 24.

I just got 300 miles on a tank and thats a damn record for me! All city driving and never let my RPM's go over 2100... EVER. I babied the crap out of the gas and still get only 300 on the tank. Whats wrong with this thing?! New plugs/wires/etc... could it be an O2 sensor? and how do you know which O2 sensor to replace???

SikMindz
07-30-2007, 04:01 PM
How big is the damn tank? I swear mine's just over 12gal.

bballr4567
07-30-2007, 04:10 PM
270 a tank but 24 mpg? For 2000's, its a 14.3 gallon gas tank and you're not even lettin the light come on. Lucky to get 20 mpg let alone 24.

I just got 300 miles on a tank and thats a damn record for me! All city driving and never let my RPM's go over 2100... EVER. I babied the crap out of the gas and still get only 300 on the tank. Whats wrong with this thing?! New plugs/wires/etc... could it be an O2 sensor? and how do you know which O2 sensor to replace???

Hmmmm sooo whats your MPG?? A tank is not a measurement.

Mike Jung
07-30-2007, 06:09 PM
Morton Grove, IL to Toronto, ON:

Distance travelled: 850.9 km / 528.7 miles
Gasoline used: 64.627 L / 17.073 US Gallons
= almost 31 US mpg = 13.2 km/L = 7.6 L used per 100 km


The best gasoline mileage portion was from Morton Grove, IL to Detroit, MI:
Distanced travelled: 488.3 km / 303.4 miles
Gasoline used: 33.957L / 8.9706 US Gallons
= about 33.9 US mpg = 14.3 km/L = 7 L used per 100 km


PS: Duty Free Gasoline was $2.70 US per US Gallon :D

AaronGAGT
07-30-2007, 08:29 PM
How big is the damn tank? I swear mine's just over 12gal.

My owners manual says 14.3 gallons for a my 2000. But I think it might differ year to year, I think one year it was 13.4 or something.

Hmmmm sooo whats your MPG?? A tank is not a measurement.

I told you the capacity of the tank, so thats a measurement.

do the math, 300 Miles on tank, filled up when the needle was on E ... so take 300 miles divided by 14 gallons (assuming that I had 0.3 gallons left) is about 21 MPG.

Either my car has something wrong with it or myself and others aren't calculating it correctly... and I'm willing to bet its something with my car. Or you people with 25+MPG are really really slow drivers that don't get past 55 MPH. :p

bballr4567
07-30-2007, 08:34 PM
2001 and up got 13.4 gallons and the previous got 14.3.

And no thats not a measurement. If you guess that you used 14 gallons then you didnt use 14 gallons. Thats kind of like saying well I need 5 quarts of oil but i think I only used 4. lol

See how Mike did it?? Yea I do it the same exact way. Use all the decimal points and get an exact measurement.


Anyways 21 MPG city isnt bad at all. Thats damn good TBH. If you baby it and never get it about 2500 RPM you might pull 23-24 MPG.

Mike Jung
07-30-2007, 08:45 PM
How big is the damn tank? I swear mine's just over 12gal.
2001 and up got 13.4 gallons and the previous got 14.3...
Well, my owners manual says for my '99 GA:
Fuel Tank: 56.8 L / 15 US Gallons

bballr4567
07-30-2007, 08:54 PM
Errr thats freakin weird.

I guess you learn something new everyday.

Anybody else confirm this?

williamGT
07-30-2007, 11:15 PM
this is the right one this time, I just came back from my holidays, I gas up in white court alberta and the car was out of gas in High Level alberta so 615KM to a tank.

cardude007617
07-30-2007, 11:56 PM
anyone else notice that when ever u go WOT with a cai installed, that ur gas goes down REALLY fast?

Panacea
07-31-2007, 09:11 AM
How big is the damn tank? I swear mine's just over 12gal.

'99 is 15 gal IIRC.

GMFreak
08-06-2007, 09:02 AM
My Mileage is horrible. 17c-22h. 3.4L V6. Oh well. Anything I can do to get it up there better? My plugs and Fuel Filter are about 6 months old. O2 sensors or anything else? Wires are probably going to get replaced here pretty quick. I'm running all stock.

torq455
08-06-2007, 07:44 PM
mileage is good here. 3400 in town gets 24-25, and a long trip 3 hours each way i got 31 mpg. that's with a WAI. i did switch to 5-20 mobil 1. mileage got better. it rarely sees over 2500 rpm. have to see if there's any improvement with my true ram air!

Mike Jung
08-06-2007, 08:12 PM
mileage is good here. 3400 in town gets 24-25, and a long trip 3 hours each way i got 31 mpg. that's with a WAI. i did switch to 5-20 mobil 1. mileage got better. it rarely sees over 2500 rpm. have to see if there's any improvement with my true ram air!
Please don't use Mobil 1 5W-20 motor oil in your GA !!!

Especially, in the hot summer months.

Better gasoline mileage from a thinner motor oil.
But at what extra engine wear consequences ?
GM said it will never endorse 5W-20 motor oil for it's designed products.
(Not counting it's Saturn Vue that uses a Honda V6 engine & tranny.)


& here I am using a thick German Castrol Syntec 0W-30 motor oil.
The totally opposite of torq455.

Mike Jung
08-06-2007, 08:44 PM
Your engine is made for a 30 Viscosity oil.

@ 100C/212F:
30 viscosity = 9.30-12.49 cST
20 viscosity = 5.60-9.29 cST

Mobil 1 5W-30 = cSt @ 100 C of 11.3 (it used to be around the 10.0 range, but they thicken it up alittle bit)
Mobil 1 5W-20 = cSt @ 100 C of 8.8

German Castrol Syntec 0W-30 = cSt @ 100 C of 12.1


Just think what will happen to Mobil 1 5W-20, when the oil temps get above 100C & start getting even thinner in viscosity :eek:

PS: This is the reason that Ford has a TSB, that is not widely known.
Not to use 5W-20 motor oil during extreme hot temps, high speed runs, or for towing.

PSS: Stay with High performing spec ACEA A5 (thinner, for energy conserving spec.) or A3 (thicker, not meeting energy conserving spec.) rated synthetic motor oils.
Mobil 1 5W-20 only meets ACEA A1 rating. Which all current API SM motor oils meet.

Panacea
08-06-2007, 09:29 PM
Thanks for the tidbit Mike. So, since my car recommends 5w20, would you recommend switching to 0w-30 or 5w-30 (Mobil 1 since I can't get German Castrol). What about their 0w-20?

Mike Jung
08-06-2007, 10:03 PM
Uh, I forgot to mention the HTHS (High-Temperature High-Shear) Viscosity rating at 150C/302F:
Mobil 1 5W-20 = 2.62
Mobil 1 5W-30 = 3.09

German Castrol Syntec 0W-30 = about 3.5

Mike Jung
08-06-2007, 10:09 PM
Thanks for the tidbit Mike. So, since my car recommends 5w20, would you recommend switching to 0w-30 or 5w-30 (Mobil 1 since I can't get German Castrol). What about their 0w-20?
I would suggest of the two you list:
Mobil 1 5W-30
ACEA A5 rated
Viscosity at @ 100C, cSt = 11.3
HT/HS Viscosity, cP = 3.09

Or even better Mobil 1 EP 5W-30 (it has a strong additive pack).
ACEA A5 rated
Viscosity at @ 100C, cSt = 11.0
HT/HS Viscosity, cP = 3.1

Don't ever use Mobil 1 0W-30: Unless it is for winter time use (in cold climates).


If it was me: I would probably use Pennzoil Platinum 5W-30.
ACEA A5 rated
Viscosity at @ 100C, cSt = 10.3
HT/HS Viscosity, cP = 3.1


PS: Myself wouldn't use Mobil 1 0W-20 that was made for hybrid vehicles.
ACEA A1 rated (just like any API SM rated oil)
Viscosity at @ 100C, cSt = 8.8
HT/HS Viscosity, cP = 2.61 (so technically handle heat worse than Mobil 1 5W-20)

PSS: IMO, don't feel comfitable using a motor oil that has less than a HTHS of 3.0 in the summer.

Mike Jung
08-06-2007, 10:32 PM
Thanks for the tidbit Mike. So, since my car recommends 5w20, would you recommend switching to 0w-30 or 5w-30 (Mobil 1 since I can't get German Castrol). What about their 0w-20?
& further info:
Castrol UK & Australia recommend a synthetic motor oil of 5W-30.

bryanw0087
08-06-2007, 11:30 PM
ok the tank is not a measurement for gas mileage there pal, you go by whats on the pump, u might be on E with the light on and still have 2 gals left in the tank, and lets say i have 270 on the trip and got 11.2 gallons of gas, ( 270 / 11.2) = 24.1 mpg, i have mixed highway and city driving, but i also sat still and revved my car several times since i just had the slp exhaust installed, you cant just go by what your tank holds, and divide out your trip, you have to go by what your trip says and how many gallons you actually put into the car,

on a side note my car holds 14.3 gallons as well (2000 ,3.4v6)

Freeza
08-07-2007, 06:09 AM
27-29 MPG, Stock 2003 GA-GT. That's "hill country" driving; steep hills, no traffic.

GT_turbo
08-07-2007, 09:16 AM
I get around 17 mpg. Live in country 10 miles from town. Big hills.

torq455
08-07-2007, 03:54 PM
yeah 5W-20 is thinner. however, todays clearances and tolerances are much tighter than they used to be. therefore less oil is flying past the rods. 5w-20 synthetic had more and better friction modifiers than thicker viscosities therefore counter acting the wear characteristics associated with thinner oils. come on fellas, you can't tell me i'm ruining my engine. todays technology and materials let alone oil are far superior than that of yesteryears. 10 years ago i'd never consider using 5w-20, even if they made it then. it will be just fine, even during the summer. i've read articles and researched before i did the change. i'm not worried, and i'm meticulous with my cars in prolonging their optimal performance.

SikMindz
08-07-2007, 04:16 PM
'99 is 15 gal IIRC.

Really? That's interesting...I've never filled up more than 12.4gal because it already feels like I'm driving on fumes. Not a theory I'm willing to test out either..lol

Mike Jung
08-07-2007, 05:11 PM
yeah 5W-20 is thinner. however, todays clearances and tolerances are much tighter than they used to be. therefore less oil is flying past the rods. 5w-20 synthetic had more and better friction modifiers than thicker viscosities therefore counter acting the wear characteristics associated with thinner oils. come on fellas, you can't tell me i'm ruining my engine. todays technology and materials let alone oil are far superior than that of yesteryears. 10 years ago i'd never consider using 5w-20, even if they made it then. it will be just fine, even during the summer. i've read articles and researched before i did the change. i'm not worried, and i'm meticulous with my cars in prolonging their optimal performance.
I would be interested, if you posted some of these articles.
T.I.A.

Considering what I have read about 5W-20 in "extreme" conditions.

& considering:
the Ford TSB;
GM not endorsing 5W-20 motor oil;
& Mazda RX-8 blowing engines because of it in Las Vegas;
& Police Ford Inceptor's having less engine life because of it.

The only reason 5W-20 is used in North America is CAFE.

Almost all of the same vehicles used outside of North America use thicker viscosities.

PS: Do have any used oil analysis of the Mobil 1 5W-20, after it was used in your GA.
& if so, how are the wear #'s ?

PSS: Try telling that to the LS-x (engine) guys.
All of their engines love thicker viscosities.
Like German Castrol Syntec 0W-30 & Mobil 1 0W-40 lol

Mike Jung
08-07-2007, 05:21 PM
Really? That's interesting...I've never filled up more than 12.4gal because it already feels like I'm driving on fumes. Not a theory I'm willing to test out either..lol
That is because, when the low fuel light comes on (if it is working properly):
There is 13% of the gasoline tank's capacity left.
About 2 US Gallons.


By the way why are people running their gasoline tanks dry ?
Do you not care about your fuel pump's life ?
Don't ever go below 1/4 of a tank; especially in the hot summer time weather.
The gasoline is used to cool the fuel pump.

GTLUVA
08-07-2007, 07:59 PM
I just took a 140 mile trip today in the G6 and I averaged 22 a gallon. Tomorrow I'm taking a 200 mile trip so I'm taking the Saturn and I should get about 35 a gallon.

Panacea
08-07-2007, 08:30 PM
Really? That's interesting...I've never filled up more than 12.4gal because it already feels like I'm driving on fumes. Not a theory I'm willing to test out either..lol

When the dummy light comes on, you should have approx. 2-3 gallons left.

Panacea
08-07-2007, 08:32 PM
I just took a 140 mile trip today in the G6 and I averaged 22 a gallon. Tomorrow I'm taking a 200 mile trip so I'm taking the Saturn and I should get about 35 a gallon.

Did you keep the G6 in 3rd gear the whole time? That's horrible! Unless that was all city driving.

GTLUVA
08-07-2007, 08:47 PM
Did you keep the G6 in 3rd gear the whole time? That's horrible! Unless that was all city driving.

Umm no! I was going 70 mph so it wasn't city drivin at all. I had my air conditoner running full blast?

Sprucegagt
08-07-2007, 09:46 PM
By the way why are people running their gasoline tanks dry ?
Do you not care about your fuel pump's life ?
Don't ever go below 1/4 of a tank; especially in the hot summer time weather.
The gasoline is used to cool the fuel pump.

Why do people keep worrying about this? I'm still running my stock pump even though I regularly run the tank below 1/4 if not turning the low fuel light on.

torq455
08-07-2007, 10:28 PM
because it sucks to have to pay someone ~$600 bucks to replace a burnt pump when all you had to do to prevent it was fill up just a little sooner.

Panacea
08-07-2007, 10:30 PM
Umm no! I was going 70 mph so it wasn't city drivin at all. I had my air conditoner running full blast?

Still, that's extremely poor mileage for interstate driving. Do you gun it from every stop and race the car? Something isn't right if you're getting that poor of mileage. Also, are you calculating your mileage or just going by what the cars computer tells you (if it has that option)?

Mike Jung
08-07-2007, 10:33 PM
Still, that's extremely poor mileage for interstate driving. Do you gun it from every stop and race the car? Something isn't right if you're getting that poor of mileage. Also, are you calculating your mileage or just going by what the cars computer tells you (if it has that option)?
It is only rated 16 mpg in the city, & 24 mpg on the highway ;crap

http://www.fueleconomy.gov/feg/bymake/Pontiac2006.shtml

GTLUVA
08-08-2007, 05:18 AM
Still, that's extremely poor mileage for interstate driving. Do you gun it from every stop and race the car? Something isn't right if you're getting that poor of mileage. Also, are you calculating your mileage or just going by what the cars computer tells you (if it has that option)?

My car is loaded it gives me the exact mileage totals I even get the current temp.

Panacea
08-08-2007, 10:06 AM
It is only rated 16 mpg in the city, & 24 mpg on the highway ;crap

http://www.fueleconomy.gov/feg/bymake/Pontiac2006.shtml

Wow, that's horrible. Especially since the GA got 30+ highway.

My car is loaded it gives me the exact mileage totals I even get the current temp.

Yes, my car has a temp reading as well as a mileage display; however, when I compute my mileage, the computer is wrong! It is usually 3-4mpg under what I actually got, and I've had it twice where it actually said I got 1-2mpg more. Going by the computer on the car is like listening to OJ when he said he didn't do it -- it's unreliable.

fo44rd
08-08-2007, 10:25 AM
I cycle drive at about a 50/50 mix and get high 20's in the summer and mid 20's in the winter. Anyone else notice how the lock-up torque converter locks out right at 40MPH in the summer right away, but wont lock up at all until a certain temperature is reached?

Sprucegagt
08-08-2007, 01:05 PM
I cycle drive at about a 50/50 mix and get high 20's in the summer and mid 20's in the winter. Anyone else notice how the lock-up torque converter locks out right at 40MPH in the summer right away, but wont lock up at all until a certain temperature is reached?

The PCM won't allow the converter to lock up until trans. temp is above I think 100F.

fo44rd
08-08-2007, 04:36 PM
The PCM won't allow the converter to lock up until trans. temp is above I think 100F.

Is there a transmission life issue for why they do that?

If not, can that be programmed out???

Sprucegagt
08-08-2007, 05:22 PM
Yes. The converter will not live long trying to lock up with cold fluid. The fins inside of it will break due to being over stressed.

The_Wraith
08-11-2007, 10:55 AM
I get 29-30mpg (one time it hit 31mpg) now in the winter it goes down to about 25mpg, I full up @ about 340-350miles to the tank, the light hasn't come on yet @ this point.

I always check my mpg when I fill up... My GA doesn't have any readout, I have to use my cell phone calc.

Evne when I use the air, my mpg will be the same...

I drive 69miles round trip to work.

The_Wraith
08-11-2007, 10:57 AM
The PCM won't allow the converter to lock up until trans. temp is above I think 100F.

yeah, in the winter, I can tell, my rpms will be 2k or more, but after a few miles I can tell it kicks in and drops back down to normal 1600 or so. It only does this first thing in the morning on really cold days...

so I guess this is normal then... :-)

Tank
08-11-2007, 11:04 AM
Mine is about the norm high 20's low 30's, thats when I drive like I got some since. When I dont its horrid.

Jake
08-11-2007, 11:11 AM
I just got done figurin out my MPG, I got 285 off 12 gallons. So that = 23.75 miles to the gallon, I guess that isnt bad considering I jumped on the gas a time or 3

Hot_Stud18
10-18-2007, 11:24 AM
Wonder if its possible for my odometer to be off? I get 28mpg in the city and 36mpg on the highway. It seems like I started getting good gas mileage after 60k but that is about the time I changed the fuel filter and also switched to mobil 1 extended performance. FYI I use 87 grade gas from Sheetz I never let my car warm up before I take off and I usually take off extremely slow usually between 1500-1900rpm's. I do occasionaly get it up to the 5-6k RPM range when times permit.

redhotalero
10-18-2007, 11:53 PM
Have a 2000 Alero GL3 -- the GrandAm's less sporty cousin! -- with the 3.4L, and I have never seen less than 28 freeway doing 83mph on cruise. Best was 31.6mpg... In town is another story -- about 19-21, but I do have a lead foot...

Cliff8928
10-19-2007, 12:47 AM
Through my daily grind to work 20 miles "City" i get:

about 25 MPG in the Alero (Ecotec 5-speed)
about 17 MPG in the Beretta (3400 5-speed, E85)
about 18 MPG in the XLR (4.6 norhtstar, 5-speed auto)

cardude007617
10-24-2007, 01:51 PM
yay time to bring this one back!!

for a 1/4 of a tank in about 40-50s for the temperature, i got 64 miles. so does 256miles sound pretty good for a full tank?

Jake
10-24-2007, 04:05 PM
I think you could get a more accurate answer going off a full tank. My older Ga I could go 100 miles without the gas gauge moving then all of a sudden it would drop a ton, I havent heard of a 99+ doing this but still, probably be more accurate on a full tank, I just did mine again and I got 23.5 MPG thats 1/2 city 1/2 highway driving, not to bad.

GT_turbo
10-26-2007, 01:39 PM
I'm consistantly gettin 20-21 mpg with my turbo setup. I thought that was really impressive. I don't exactly drive efficently either. I got 32 mpg driving all interstate cruisin at 75 mph the whole time.

scotiez
10-30-2007, 02:57 AM
I'm not sure what is correct for gas mileage. I have a 2004 and i don't have alot of miles on it, In fact i only have 17238 miles on it. But since its been brand new Interstate hwy driving with my cruise set at 75 to 80 mph i get 23 to 24 mpg. My RPMs is just over 2 at this speed. Now if i drive on a hwy that is only 55 mph and i set my cruise at about 60, I get around 27 mpg, RPMs is about 18 or 19. Is this normal for GAs with a 3400 completely stock?

Sprucegagt
10-30-2007, 06:28 AM
I'm not sure what is correct for gas mileage. I have a 2004 and i don't have alot of miles on it, In fact i only have 17238 miles on it. But since its been brand new Interstate hwy driving with my cruise set at 75 to 80 mph i get 23 to 24 mpg. My RPMs is just over 2 at this speed. Now if i drive on a hwy that is only 55 mph and i set my cruise at about 60, I get around 27 mpg, RPMs is about 18 or 19. Is this normal for GAs with a 3400 completely stock?

That can't be right. My car stays at 2250 rpm at 75 mph and is about 2400 rpm at 80 mph.

But your low mpg numbers can come from a number of things. One big item you have to remember is mpg starts taking a nose dive when your over 70 mph. Maintenance and tire pressure are other things to check.

Falke401
10-30-2007, 07:49 AM
Last tank i got 17 mpg. All city driving. :(

whoisryan
10-30-2007, 09:02 AM
i could get up to 230 at the most... but i fill up at 200 because my gas gage is broken so i have to use my trip meter to know when to fill up. ( all in US gallons and miles )

so about 16 mpg?

fo44rd
10-30-2007, 12:08 PM
That can't be right. My car stays at 2250 rpm at 75 mph and is about 2400 rpm at 80 mph.

But your low mpg numbers can come from a number of things. One big item you have to remember is mpg starts taking a nose dive when your over 70 mph. Maintenance and tire pressure are other things to check.


The GT has a higher final drive ratio vs. his SE, so his will spin a little lower at highway speeds.

polo77
10-30-2007, 12:35 PM
i could get up to 230 at the most... but i fill up at 200 because my gas gage is broken so i have to use my trip meter to know when to fill up. ( all in US gallons and miles )

so about 16 mpg?

Thats about where mine is at. Anywhere between 230-270

scotiez
10-30-2007, 02:39 PM
That can't be right. My car stays at 2250 rpm at 75 mph and is about 2400 rpm at 80 mph.

But your low mpg numbers can come from a number of things. One big item you have to remember is mpg starts taking a nose dive when your over 70 mph. Maintenance and tire pressure are other things to check.

My rpms could be 2250 when im at 75 mph. I was just taking a guess since i knew it was over 2000 but not by alot. My maintenance is kept up very well, I just put in a new air filter, I use Mobil one oil, and my tire pressure is at 34 in the front and 32 in the rear. I also had the dealership check it out today and they said everything checked out good and to spec. My mileage hasn't change for the better or worse since i bought it brand new. I was just thinking it should be better. Anyway its not horrible and i can live with it.

nikos89
03-17-2008, 05:22 PM
I'm averaging 22-24ish mixed City/Hiway, mostly 35/40/55/70 mph zones.

1/2dolla
03-20-2008, 11:17 AM
Well since the fuel guage hasnt worked right for a couple of years Ive just been watching the trip odometer.. I usually let it go to 250-270 miles then fill it up. Most times it will take about 12.6 gallons. So If the max capacity is 14.3 gallons that leaves a couple of gallons in the tank so for a full tank about 20.6 miles per gallon or about 295 miles per tank. This is the 3400 and 90% of it is stop and go city driving with 5-10% freeway.

1995_ga_gt
03-20-2008, 12:33 PM
grand am gets about 20 running around town. going about 75-80 on the interstate gets 33-35mpg

the camaro gets about 22-25 depending how i drive

tonySE1
03-20-2008, 10:54 PM
Last tank i got 17 mpg. All city driving. :(

Same here... and mine is a 4cyl.. not even the V6.

ramair4thesoul
03-20-2008, 11:05 PM
MPG=CRAP
Everything I own gets crappy mpg. My truck has the beefy 4.3 vortec pulling mud tires. The cadi is AWD with a V8. I guess the GA gets the best but it still = CRAP. I'm going to go buy a smart car.

Jake
03-20-2008, 11:09 PM
On our recent trip across country we were gettin an average of 28 mpg which I think was pretty good for the car being loaded up somewhat and my dad and I in the car.

Vash6563
03-21-2008, 01:04 AM
The GT has a higher final drive ratio vs. his SE, so his will spin a little lower at highway speeds.

That sir is untrue... It's the SE that has the higher final drive, the GTs were smaller so the gears would stay closer together for that "sporty" feel.

That's all that keeps me going with my SE is knowing it can in theory go faster than a GT :driving:

1995_ga_gt
03-21-2008, 05:21 AM
That sir is untrue... It's the SE that has the higher final drive, the GTs were smaller so the gears would stay closer together for that "sporty" feel.

That's all that keeps me going with my SE is knowing it can in theory go faster than a GT :driving:

the car would fall apart before it could reach top speed...i wouldn't take any grand am over 100

GA2000GTSpeed
03-24-2008, 05:07 PM
the car would fall apart before it could reach top speed...i wouldn't take any grand am over 100

Not true. lol
But it does get a little shakey at 125 :angel
Oh and i do kinda have a heavy foot so im getting about 16-18 MPG

cardude007617
03-24-2008, 05:11 PM
grand ams arent as bad as you think, at least the newer ones

xrw600
03-27-2008, 10:50 PM
It seems like mine gets worse and worse... I burned a whole quarter tank in 6 hours! wtf is wrong with this thing? Of course i was on the pedal hard :D

cardude007617
03-27-2008, 11:17 PM
is it just me or does that^^ post make absolutely no sense?

redhotalero
03-28-2008, 01:39 PM
Burned a quarter tank in 6 hours.... Well, that would be good if you were talking a freeway run for 6 hours, but bad if around town idling or something.... :D Agreed, nonsensical...

B 2 THE R
04-01-2008, 07:25 PM
So i have been running E20 for the past day and half and runs no different than regular unleaded, not sure if it's a smart idea to continue, look'n for some input.

tonySE1
04-01-2008, 08:20 PM
Was getting 17. Put a system fuel cleaning in and now I'm getting like 24. Still kinda bad for a 4cyl?

Dominance9
04-02-2008, 01:43 AM
I average about 25 mpg, thats a mix of city + highway driving though

peppermill
04-13-2008, 06:24 PM
After tracking every gallon for the first 60,000 miles: About 24. Didn't matter if it was on 87 octane, or on E10.

Always less in the winter, more in the summer, by a few MPG.

After going to E20: About 24.
After going to E30: About 24.
After going to E85: About 18.