MPG targets for V8?

[Deutsch]

I read that the 4th gen got 18/20, city/hghwy respectively. Don't know what the combined number is? I'm not going to say that fuel economy isn't a concern for me, it is. I do a lot of driving and don't want to be filling up my car every week. As it is I'm fortunate to go two weeks between fill ups. Overall I get exactly 24 mpg. In order for me to buy a Camaro(only V8) it would have to be @ or exceed that number. Hope my expectations aren't unrealistic.

[ksmithers88]

the new ls3 thats going into the 08 vette is supposedly the same base v8 going into the 5thgen. It has AFM (active fuel management), and is supposed to get at least 30 mpg highway. I'm guessing about 24-32 average with a mildly heavy foot. If your easy on it you should hopefully get about 25 between both city/hwy. According to GM when your cruising, the AFM will only be running 4 cylinders, so logically you should get mileage a little better than a standard v6.

[Mustang Killer57]

I highly doubt AFM will be used on the Vette. Because of concerns of the exaust note in 4cyl mode. The vette can get nearly 30mpg highway without it.

It makes me wonder if GM will even use AFM on the Camaro, atleast on some v8 models.
The LS4 with AFM couldnt get a GP or Impala to 30mpg under the old rating system (automatics). I dont see the LS3 pulling that high of MPG in a Camaro under the new system, even with AFM.

[Ron78Z&01SS]

Not sure where you got your 4th Gen mileage numbers, but the trans and rear gearing comes into play also. Over the years I've had 3 4th Gens and have taken all of them on quite a few road trips of anwhere from 250-1,000 miles. I always monitor my mileage on road trips looking for a drastic change that might alert me to engine control, fuel delivery, emissions problems, etc.

My speed is usually anywhere between 70-90mph, the majority of my time being spent between 80-85mph. If someone kept it at 70mph, I'd imagine they would have better numbers. My highway mileage was/is:

95 LT1 A4 w/2.73's Just over 22mpg

96 LT1 A4 w/3.23's Hover right around 20mpg

01 LS1 M6 w/3.42's Right around 26mpg


Though it originally was thought the the LS3 would have "Displacement on Demand" or "Active Fuel Management" (whatever you want to call it), the 2008 Corvette DOES NOT have it. I guess they're still working the bugs out?

I'm sure some will disagree, but I think it would be GREAT if GM could perfect this before the launch of the 5th GEN. I'd imagine we'd easily see WELL OVER 30mpg highway numbers on the V8, and even more on a V6.

Granted, people generally DON'T buy a sports car for mileage, but if hey, if it keeps us from getting hit with a "gas guzzler" tax (if they lower the standards), save us some money in fuel costs AND sweeten the deal for any potential buyers trying to justify the purchase of a "sports car" to their significant other (or themselves!)....I say that's a good thing.

[Deutsch]

Originally Posted by Ron78Z&01SS

Not sure where you got your 4th Gen mileage numbers, but the trans and rear gearing comes into play also. Over the years I've had 3 4th Gens and have taken all of them on quite a few road trips of anwhere from 250-1,000 miles. I always monitor my mileage on road trips looking for a drastic change that might alert me to engine control, fuel delivery, emissions problems, etc.

My speed is usually anywhere between 70-90mph, the majority of my time being spent between 80-85mph. If someone kept it at 70mph, I'd imagine they would have better numbers. My highway mileage was/is:

95 LT1 A4 w/2.73's Just over 22mpg

96 LT1 A4 w/3.23's Hover right around 20mpg

01 LS1 M6 w/3.42's Right around 26mpg


Though it originally was thought the the LS3 would have "Displacement on Demand" or "Active Fuel Management" (whatever you want to call it), the 2008 Corvette DOES NOT have it. I guess they're still working the bugs out?

I'm sure some will disagree, but I think it would be GREAT if GM could perfect this before the launch of the 5th GEN. I'd imagine we'd easily see WELL OVER 30mpg highway numbers on the V8, and even more on a V6.

Granted, people generally DON'T buy a sports car for mileage, but if hey, if it keeps us from getting hit with a "gas guzzler" tax (if they lower the standards), save us some money in fuel costs AND sweeten the deal for any potential buyers trying to justify the purchase of a "sports car" to their significant other (or themselves!)....I say that's a good thing.

I got my 4th gen numbers(which I was a little off on) from Edmunds.com, you can check the numbers here:

http://www.edmunds.com/used/2001/che...590/specs.html

EPA Mileage Estimates: (City/Highway)
Manual: 19 mpg / 28 mpg Automatic: : 18 mpg / 26 mpg

However effective/ineffective DOD is, it would be loss for GM to exclude it from the features list, as I'm sure the Challenger will have it.

[Ron78Z&01SS]

Even better numbers than me. I guess that happens if you drive the speed limit on the highway huh?

My right foot has never allowed me to get close to those "city numbers"!

[Deutsch]

Originally Posted by Mustang Killer57

I highly doubt AFM will be used on the Vette. Because of concerns of the exaust note in 4cyl mode. The vette can get nearly 30mpg highway without it.

It makes me wonder if GM will even use AFM on the Camaro, atleast on some v8 models.
The LS4 with AFM couldnt get a GP or Impala to 30mpg under the old rating system (automatics). I dont see the LS3 pulling that high of MPG in a Camaro under the new system, even with AFM.

If the G8(a fellow Zeta car) has DOD, so too will the 5th gen Camaro.

[ILOVEMYLT1]

In my 95 A4 LT1 I am very pleased. With 2.73's I get 22mpg mixed, and all hwy I have gotten as high as 29.6 mpg. I am hoping for at least 30mpg on the hwy with the new LS3, being my daily driver I will need all I can get.

[Mustang Killer57]

Originally Posted by Deutsch

If the G8(a fellow Zeta car) has DOD, so too will the 5th gen Camaro.

The G8, made in Australia will not come with the LS2 as we know it or LS3. It will contain a motor similiar to an LS2, with different heads I believe.

Im betting the debuted G8 engine and Camaro engine will not be the same...

[ChrisL]

Correct. G8 has already been announced to have a 6.0L V8 rated at 362HP

www.pontiac.com/g8

[Silverado C-10]

I looked into buying a Mustang in '05, but I just couldn't bear the thought of giving up my Z71 for it, then GM announced the Camaro.... ANYWAY, if I remember correctly, a 5 speed Mustang GT is rated at 17/24 (something like that) and that seems to be reasonable for a sports car.

If the camaro has 100 more HP and can get those numbers or better, I'll be happy. I'd be getting the 400 horse car (SS or whatever it will be???) with a six speed.

I did have a roommate in college that drove a 2000 TA with a WS6 and swore he could pull down 30mpg straight hwy, but only got 15-16 "around town."

[BitchinCamaro]

Originally Posted by Mustang Killer57

I highly doubt AFM will be used on the Vette. Because of concerns of the exaust note in 4cyl mode. The vette can get nearly 30mpg highway without it.

With federal restrictions and basic public mindset these days, GM needs every MPG they can squeeze out of the engine. Even on sports cars people look at the MPG rating before the HP rating.

[ChevEE]

I have a a 4th gen and a heavy foot and get 19-20 city and have gotten 29-30 on the highway. I expect the numbers to be similar. The feat being higher horsepower numbers while maintaining the fuel economy. The days of major sacrifice on gas mileage for power are gone.

[Plague]

if the v8 is the same as the g8, I would say yes. The top v8 being an LS3, I would say no to that one.

Just my guess.

[ChrisL]

Originally Posted by Deutsch

I read that the 4th gen got 18/20, city/hghwy respectively. Don't know what the combined number is? I'm not going to say that fuel economy isn't a concern for me, it is. I do a lot of driving and don't want to be filling up my car every week. As it is I'm fortunate to go two weeks between fill ups. Overall I get exactly 24 mpg. In order for me to buy a Camaro(only V8) it would have to be @ or exceed that number. Hope my expectations aren't unrealistic.

24mpg overall depends. Is it mostly highway driving? Then yes. If it's in heavy traffic, probably not.