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Old 08-09-2007, 04:39 AM   #1
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ls1 mpg VS ls2 mpg

autotrade says 04,05,06 gto's all get about the same mpg, is that true?

considering one has -50hp.....
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Old 08-09-2007, 04:41 AM   #2
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the LS2 will get about 1-2mpg less
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Old 08-09-2007, 04:42 AM   #3
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hehe, i like ur display picture
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Old 08-09-2007, 04:46 AM   #4
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Quote:
Originally Posted by Steel Chicken...View Post
the LS2 will get about 1-2mpg less

Cause we use our xtra 50hp more.....
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Old 08-09-2007, 04:53 AM   #5
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Quote:
Originally Posted by bnvus...View Post
Cause we use our xtra 50hp more.....

lets not start a LS2/LS1 flame war shall we?
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Old 08-09-2007, 04:53 AM   #6
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yah thats what i assumed, i was just curious if autotrader knew something i didnt
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Old 08-09-2007, 04:56 AM   #7
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Originally Posted by antidookie...View Post
yah thats what i assumed, i was just curious if autotrader knew something i didnt

no, but why does it matter anyways? 1-2mpg shouldn't be a factor in a performance car buying decision
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Old 08-09-2007, 06:49 AM   #8
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Originally Posted by Steel Chicken...View Post
no, but why does it matter anyways? 1-2mpg shouldn't be a factor in a performance car buying decision

It was for me and I think more people then you realize, especially those of us who daily drive our cars.

The LS1 was rated 17-29 I've maxed in the 27's on a trip but usually get mid 18's on my daily commute.

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Old 08-09-2007, 07:03 AM   #9
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I am pushing mid 19's on my daily commute too. About 50/50 highway/city driving but for some reason the city driving is much more spirited .
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Old 08-09-2007, 08:02 AM   #10
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my 04 is 28-30 on the highway around 20 in the city. if the surface is flat for a good # of miles then it will get even better. the most on flat ground in okla. i have gotten 34 a few times. but mostly the 28-30. i commute 110 miles to work and back.
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Old 08-09-2007, 08:11 AM   #11
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Im lucky if I get 17 in the city and 21 on the freeway.
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Old 08-09-2007, 08:40 AM   #12
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all i know is i can go 260 miles to a tank in my stockish 04 a4
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Old 08-09-2007, 09:33 AM   #13
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I get crap for gas mileage on the highway even if 90% of my driving is done on there thanks to traffic jams.
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Old 08-09-2007, 12:38 PM   #14
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Quote:
Originally Posted by Steel Chicken...View Post
the LS2 will get about 1-2mpg less

actually no according to GM the ls2 has better fuel economy than the ls1.
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Old 08-09-2007, 12:44 PM   #15
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Quote:
Originally Posted by spd98...View Post
actually no according to GM the ls2 has better fuel economy than the ls1.


The EPA ratings are worse for an LS2 vs. an LS1 in M6 form. The LS1 is 17/29 and the LS2 is 17/25.

The new EPA ratings put the LS1 at 16/26 and the LS2 at 15/23.
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Old 08-09-2007, 01:07 PM   #16
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ok..lets face the facts...The LS2 does get less mpg than an LS1....It has 50 more HP with basically the same motor...

My LS1 used to get 27mpg average highway while averaging 80 mph, stock...Now that I have about 60 more hp than stock, I average 25mpg highway while averaging 80mph...

I have gotten over 500 miles to the tank while doing nothing but highway driving...With both highway and city mixed, I get about 350 miles/tank...

Either engine gets great gas mileage though...Try owning a Hemi....Half of the cylinders shut down to save gas and they still only average about 11mpg...

I do love when people with economy cars find out that my "big gas guzzling V8" gets better mileage than their econo V6!!
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Old 08-09-2007, 01:47 PM   #17
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Quote:
Originally Posted by GTOHHH...View Post
The EPA ratings are worse for an LS2 vs. an LS1 in M6 form. The LS1 is 17/29 and the LS2 is 17/25.

The new EPA ratings put the LS1 at 16/26 and the LS2 at 15/23.

That sounds about right for the new rating.

I see 25/26 on long freeway drives when it's flat. Once I hit traffic it tanks quickly.
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Old 08-09-2007, 02:49 PM   #18
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if i didnt set the cruise control so high, id most likely get around 30 mpg highway, with just a few mods.
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Old 08-09-2007, 03:10 PM   #19
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I avg. 25+mpg highway doing 80mph. I don't drive city can't give that mpg.
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Old 08-09-2007, 03:29 PM   #20
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My ls1 t/a and ls2 gto get 24 mpg on the highway and 19 average. Both get better mpg than my 4-banger subaru.
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Old 08-09-2007, 04:50 PM   #21
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I believe the new SAE ratings are only estimates for our cars since we did not have a 2007 model to actually test (when the SAE ratings went into effect). While I thing the new estimates are more accurate, my LS2 will get a just a bit under 27 mpg on a highway trip; much more than the new SAE estimated standard. However, 15 mpg around town is closer than the original rating although I usually manage 16.2 mpg around town and in traffic.
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Old 08-09-2007, 05:11 PM   #22
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17 ish in town, 27 ish on hwy in my 04
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Old 08-09-2007, 06:23 PM   #23
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I only manage 12-13 in the city ..... 24 on highway
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Old 08-10-2007, 03:16 AM   #24
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Your forgetting the fact that the ls2 has much better heads and higher compression. The engine is more efficient than the ls1 was. Motor for motor the ls2 will get better mpg.
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Old 08-10-2007, 04:31 AM   #25
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Was there a Gas Guzzler tax on the 04 A4? I know the 05/06 had it. M6's did not. We got Oil Guzzler memo....
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Old 12-17-2007, 10:53 AM   #26
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but the 05-06 dont burn gas they burn oil lol.
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Old 12-17-2007, 11:02 AM   #27
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Old 12-17-2007, 11:16 AM   #28
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In the three tanks I have put through the car since purchaced I have gotten 20.4, 22.6, and 20.0
This one on a 75 mile a day commute in traffic. Hand calculated. Although the computer is damn close.

Edited, computer shows my average speed at 30.0

I could easily tank that down to 14 or so but I have some self restraint.

Can't wait for the summer to get here so I can start riding to work again.
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Old 12-17-2007, 11:19 AM   #29
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For average mpg figures to be more meaningful we should also give the average speed values.

This would imply the duty cycle (city/highway) that people are driving for the associated mileage.

I get about 16.5 mpg in SE MI (cold, dense air -burr!!) with an avg speed of 28.7 mph (mostly steets, little highway).
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Old 12-17-2007, 11:24 AM   #30
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Quote:
Originally Posted by spd98...View Post
Your forgetting the fact that the ls2 has much better heads and higher compression. The engine is more efficient than the ls1 was. Motor for motor the ls2 will get better mpg.

What? Motor for Motor, LS1 vs. LS2, the LS1 get's better MPG.

Now hypothetically, if you compared a 5.7L LS1 against a 5.7L LS2, then the LS2 *might* get better MPG. However there is no such thing, so your statement holds little value. In the REAL world, LS1's get better MPG.
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