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MPG Again...

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Old May 23, 2007 | 09:55 PM
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Default MPG Again...

I hate to start one of these but I had a weirds thing happen to me today.

I had to travel for work today so I took the vette due to its great mpg and fun to drive.

I filled her up and set out on my way, I'm used to getting 27-29 mpg on trips, I have the A4 2.73 with Stingers and Blackwing

Today at 75mph I was getting 25mpg, what gives?
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Old May 23, 2007 | 09:59 PM
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I am pretty sure it has a direct corulation to the price we are paying for said fuel
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Old May 23, 2007 | 10:03 PM
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How about temperature - mine likes the cool
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Old May 23, 2007 | 10:04 PM
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Lead foot!!
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Old May 23, 2007 | 10:06 PM
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I don't know but I didn't get as good as highway mileage that I normally get when I went to the Lone Star Classic last weekend!
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Old May 23, 2007 | 10:07 PM
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Dont feel bad, Since I changed rims and tires from stock 02 zo6 sizes, my gas mileage dropped from 27 mph to 20 mph. I put on the ccw 505a 19x10 19X11 im not sure I would of done that if i knew it was going to crush my mileage this much.
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Old May 23, 2007 | 10:14 PM
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Originally Posted by jrose7004
I don't know but I didn't get as good as highway mileage that I normally get when I went to the Lone Star Classic last weekend!
How many MPG were you getting at 140MPH???
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Old May 23, 2007 | 10:32 PM
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Is it possible that you filled up with some ethanol or a blend? My 04 gets 27-28 if I keep my foot out of it, but when I fill up with this crap around Houston I loose 3-4 mpg.
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Old May 23, 2007 | 10:54 PM
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I figured at 75 just over 2k rpm's i should get closer to 30 mpg.

did something crap out or is it the warmer weather?

I filled up with the good ol 91
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Old May 23, 2007 | 11:04 PM
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Could be any number of things - temperature, wind speed, traffic conditions.
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Old May 23, 2007 | 11:23 PM
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I have to admit I was going against a stiff breeze today... no traffic and I was set on 75mph cruise.
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Old May 23, 2007 | 11:25 PM
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Originally Posted by Omega Man
Is it possible that you filled up with some ethanol or a blend?
Sounds like you found a station with the "Summer blend" of ethanol in it.
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Old May 23, 2007 | 11:29 PM
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that would explain why the price fell today...
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Old May 24, 2007 | 01:23 AM
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Originally Posted by beav626
I have to admit I was going against a stiff breeze today... no traffic and I was set on 75mph cruise.
It is harder to drive into the wind.

Paul G.
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Old May 24, 2007 | 01:29 AM
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The average mpg is a running average over the time since the DIC was last reset

Did you reset it recently. If not you must have really enjoyed the perfrmance of the car for it to drop so quickly. Normally my average mpg falls slowly even if I'm quite "spirited". How was the instantaneous mpg? Thats a true reading of mpg at that moment.

Try a reset of the mpg and you'll see what you're getting as an average for a single trip.

Have to say I get 19 around town and 25+ on a run so 28+ is good.
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Old May 24, 2007 | 05:47 AM
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Known Fact, emissions grade gasoline kills mileage 4-5 mpg! That happens all the time to me when I go from Rural Virginia to Connecticut to visit family, my "good gas mileage" vehicle's mpg goes into the toilet when I fill up in that state. Not only does the gas COST MORE, you get less mileage so you have to buy more, WHAT A RIP-OFF!


John
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Old May 24, 2007 | 07:38 AM
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Originally Posted by DeeGee
The average mpg is a running average over the time since the DIC was last reset

Did you reset it recently. If not you must have really enjoyed the perfrmance of the car for it to drop so quickly. Normally my average mpg falls slowly even if I'm quite "spirited". How was the instantaneous mpg? Thats a true reading of mpg at that moment.

Try a reset of the mpg and you'll see what you're getting as an average for a single trip.

Have to say I get 19 around town and 25+ on a run so 28+ is good.
I try to reset every fill up...

on this trip I hit reset as soon as I hit the cruise control at 75pmh.

I gl;anced over to the instant and saw 21 to 23 mpg.
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Old May 24, 2007 | 09:43 AM
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How about the basics - plugs and wires..a clean air filter.. I'm getting ready to change mine, they don't last forever.....
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Old May 24, 2007 | 09:50 AM
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Road conditions may play a small part also
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Old May 24, 2007 | 09:54 AM
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If my Vette got 25 MPG I would be saying it was running crappy Oh the FI baby gets about 22 MPG at 80 MPH
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