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GM News, New Models and Market Share

8478 messages,  Last post on Nov 27, 2009 at 6:24 PM

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What is this discussion about? Automotive News


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#1394 of 8478
Re: 2007 -2008 Sports Sedans [sls002] by circlew
Sep 14, 2008 (11:25 am)
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Replying to: sls002 (Sep 13, 2008 12:42 pm)

Fuel economy for the rear-drive 2008 SRX V6 is 15 mpg city/22 mpg highway; V8 models are a couple mpg less. Both are middling ratings for this segment.
 
From Edmunds review of the 2008 SRX.
 
Despite its potent power plants, the 3 Series remains fuel efficient. The 328 gets about 17-18 mpg in the city and 25-28 mpg on the highway, depending on the body style, transmission and drivetrain. A rear-drive 335i has a 17/26 mpg rating regardless of transmission.
 
From Edmunds review of the 335xi.
 
Regards,
OW
#1395 of 8478
Re: 2007 -2008 Sports Sedans [circlew] by sls002
Sep 14, 2008 (3:33 pm)
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Replying to: circlew (Sep 13, 2008 12:46 pm)

My SRX has averaged about 19 overall. It does not seem to do much better than that on long trips. I have the V8 with six speed automatic. My 2002 Seville averaged about 24 MPG overall, and would get an average of 29 on long trips, with some tankfuls doing over 30.
#1396 of 8478
Re: just for kicks... [andre1969] by sls002
Sep 14, 2008 (3:42 pm)
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Replying to: andre1969 (Sep 14, 2008 11:22 am)

As I understand the process, the manufacturers do their own testing and submit the results to the EPA. The EPA lab will randomly check some cars to make sure that they have been truthful.
 
The down rated numbers seem accurate for my SRX, which is an SUV. SUV's are thirsty compared to a car. Partly I think because they have 4 wheel drive and part because of the extra drag.
#1397 of 8478
Re: 2007 -2008 Sports Sedans [circlew] by sls002
Sep 14, 2008 (3:51 pm)
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Replying to: circlew (Sep 14, 2008 11:25 am)

This is my SRX.
#1398 of 8478
Re: 2007 -2008 Sports Sedans [sls002] by circlew
Sep 14, 2008 (4:01 pm)
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Replying to: sls002 (Sep 14, 2008 3:51 pm)

Not bad mileage.
 
Regards,
OW
#1399 of 8478
Re: just for kicks... [andre1969] by 62vetteefp
Sep 18, 2008 (9:10 am)
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Replying to: andre1969 (Sep 14, 2008 11:22 am)

I checked the EPA ratings for the 4-cyl/6-speed auto Malibu/Aura/G6 for 2009. It's rated at 22/33. The 2008 Malibu with that setup is rated at 22/32. A small difference I know, but it does have me curious. Did GM actually do something to the cars to make the slight highway improvement, or did the EPA just round off differently? Or heck, could be that the car wasn't changed for 2009, but the EPA just happened to re-test and get a slightly better figure.
 
There are lots of things to do to slightly improve epa numbers.
 
Reduce weight to reach next lower level. EPA is a calculation based on vehicle attributes. For every weight class you go down you get some mpg increase. A simple way to do this is to replace steel with aluminum (spare wheel, engine cradle, hood, etc.). You just need to hit that lower weight class. Another way is to drop heavy options like a sunroof. I guess I should explain that. I think only items that go over 33% penetration (cannot remember actual number) are included in epa. So you limit sunroof to 33%, etc.
 
Another easy way to increase mpg is to revise the tire characteristics. The tire manufacturers are working like mad to decrease rolling resistance w/o effecting handling and wear.
 
Could also play with the computer to change shift points.
#1400 of 8478
Re: just for kicks... [62vetteefp] by andre1969
Sep 18, 2008 (9:25 am)
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Replying to: 62vetteefp (Sep 18, 2008 9:10 am)

So have any of these changes actually been implemented to the 2009 Malibu versus the 2008?
#1401 of 8478
Re: just for kicks... [andre1969] by 62vetteefp
Sep 18, 2008 (10:48 am)
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Replying to: andre1969 (Sep 18, 2008 9:25 am)

I do not know but they did something.
#1402 of 8478
GM's Excitement Division is getting a Chevy Aveo by torque_r
Sep 19, 2008 (1:03 am)
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General Motors will bolster the Pontiac car lineup next spring with the addition of the G3.
 
As the name suggests, the G3 is smaller than the G5.
 
Does the G3 look familiar? That's because it is a rebadged Chevrolet Aveo.
 
The G3 is powered by a 1.6-liter four-cylinder engine that rated at 106 hp. GM says the car is rated at 27 mpg in city driving and 34 mpg on the highway. A five-speed manual is standard, while a four-speed automatic is on the options list.
 
The G3 goes on sale next spring.
http://www.autoweek.com/apps/pbcs.dll/article?AID=/20080918/FREE/809189975/1065
#1403 of 8478
Re: GM's Excitement Division is getting a Chevy Aveo [torque_r] by circlew
Sep 19, 2008 (3:00 am)
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Replying to: torque_r (Sep 19, 2008 1:03 am)

Wow! I can't wait!
 
Regards,
OW

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