So I have compared my "Trip Mileage" to my "Miles Till Empty"
09-11-2012, 04:10 PM
#1
Melting Slicks
Thread Starter
So I have compared my "Trip Mileage" to my "Miles Till Empty"
and its off a good 50-75 miles. When I fill up the "miles till empty" is usually around 370-385 (I do a lot of highway during the week) and when I go by my trip. Best I have gotten so far out of 3 times was 315 miles with about 30 miles till empty left on display. Went into reserve fuel mode. My average on my display is 21.5-22mpg.
Is this normal for these cars let alone any? Its an 03 Z06 bolt ons + tune.
Is this normal for these cars let alone any? Its an 03 Z06 bolt ons + tune.
Last edited by crAzy; 09-11-2012 at 04:28 PM.
keep it on topic lol
09-12-2012, 07:08 AM
#4
Melting Slicks
My '88 & '98 do the same thing. My '95 Civic's analog gauge does a similar pattern - takes a while to get down to a half a tank, then drops like crazy for the remaining fuel.
09-12-2012, 08:42 AM
#6
Team Owner
The EPA mileage estimates are always done on the first half of a tank.
09-12-2012, 09:04 AM
#8
Team Owner
and its off a good 50-75 miles. When I fill up the "miles till empty" is usually around 370-385 (I do a lot of highway during the week) and when I go by my trip. Best I have gotten so far out of 3 times was 315 miles with about 30 miles till empty left on display. Went into reserve fuel mode. My average on my display is 21.5-22mpg.
Is this normal for these cars let alone any? Its an 03 Z06 bolt ons + tune.
Is this normal for these cars let alone any? Its an 03 Z06 bolt ons + tune.
All in all, I don't think it's estimating that bad. The estimate it gives you is based upon the # of gallons in the tank and the current average mileage. That number can vary depending on the last time you reset it, or the car reset it. I don't know the conditions under which it resets that, but it has done it to me some times for no apparent reason.
But if you think about it, it's at 315 and saying you can make it to 345 after an original estimate of 370-385, that's probably a good guess. IFFF you wanted to run it till it sputters and quits, it might just make it to 375. You're not talking about that much more fuel. And, if you do get every last drop out of there, who's to say how far it will go.
On my last fill up, the DIC said .38 mpg better than the actual mileage (which appears very close to yours). That's within 2% (1.87%) so that's to say that if you really do run till it chokes and sputters, you'd get 373 miles on an estimated 380. Yea, it's optimistic, but you could also say that if you were really low on gas, you might drive more sensibly and get 4mpg better out of the last two gallons! :p
Last edited by K-Spaz; 09-12-2012 at 09:06 AM.
09-12-2012, 09:11 AM
#9
Team Owner
Member Since: Mar 2004
Location: Oklahoma City OK
Posts: 58,266
Received 1,681 Likes
on
1,303 Posts
C6 of Year Finalist (appearance mods) 2019
It constantly adjusts to how you're driving the car and the conditions that it encounters. It's an estimate at best.
09-13-2012, 06:07 AM
#12
Melting Slicks
Member Since: Oct 2007
Location: It's true money can't buy happiness, but it is more comfortable crying in a Corvette than on a bicyc
Posts: 2,798
Likes: 0
Received 5 Likes
on
5 Posts
St. Jude Donor '13
I thought it averaged over the last 50 starts or something? Disconnecting the battery resets it or confuses it. The dic info is never very accurate and I'm surprised you're within 2%
09-13-2012, 07:26 AM
#13
Melting Slicks
Thread Starter
First, I'll just repeat what others have said here on CV about running out of gas, it's not a good idea. I've never tried it myself, but I guess things can go seriously wrong for (i think the fuel pump). So, don't do that.
All in all, I don't think it's estimating that bad. The estimate it gives you is based upon the # of gallons in the tank and the current average mileage. That number can vary depending on the last time you reset it, or the car reset it. I don't know the conditions under which it resets that, but it has done it to me some times for no apparent reason.
But if you think about it, it's at 315 and saying you can make it to 345 after an original estimate of 370-385, that's probably a good guess. IFFF you wanted to run it till it sputters and quits, it might just make it to 375. You're not talking about that much more fuel. And, if you do get every last drop out of there, who's to say how far it will go.
On my last fill up, the DIC said .38 mpg better than the actual mileage (which appears very close to yours). That's within 2% (1.87%) so that's to say that if you really do run till it chokes and sputters, you'd get 373 miles on an estimated 380. Yea, it's optimistic, but you could also say that if you were really low on gas, you might drive more sensibly and get 4mpg better out of the last two gallons! :p
All in all, I don't think it's estimating that bad. The estimate it gives you is based upon the # of gallons in the tank and the current average mileage. That number can vary depending on the last time you reset it, or the car reset it. I don't know the conditions under which it resets that, but it has done it to me some times for no apparent reason.
But if you think about it, it's at 315 and saying you can make it to 345 after an original estimate of 370-385, that's probably a good guess. IFFF you wanted to run it till it sputters and quits, it might just make it to 375. You're not talking about that much more fuel. And, if you do get every last drop out of there, who's to say how far it will go.
On my last fill up, the DIC said .38 mpg better than the actual mileage (which appears very close to yours). That's within 2% (1.87%) so that's to say that if you really do run till it chokes and sputters, you'd get 373 miles on an estimated 380. Yea, it's optimistic, but you could also say that if you were really low on gas, you might drive more sensibly and get 4mpg better out of the last two gallons! :p
. Yea I never run it dry lol. When it hits reserve I am thousands of feet away from a gas station anyways. So I'll never run it to its death. I don't like refilling at half a tank. I feel I spend more money that way, but it could be a placebo thing. Who knows. I guess that isn't bad for this car "315 miles" with both city/hwy. Its my daily and I know there are better cars out there for mpg, but I will sacrifice that for looks over something sh!tty lol.
09-13-2012, 10:59 AM
#14
Burning Brakes
First, I'll just repeat what others have said here on CV about running out of gas, it's not a good idea. I've never tried it myself, but I guess things can go seriously wrong for (i think the fuel pump). So, don't do that.
All in all, I don't think it's estimating that bad. The estimate it gives you is based upon the # of gallons in the tank and the current average mileage. That number can vary depending on the last time you reset it, or the car reset it. I don't know the conditions under which it resets that, but it has done it to me some times for no apparent reason.
But if you think about it, it's at 315 and saying you can make it to 345 after an original estimate of 370-385, that's probably a good guess. IFFF you wanted to run it till it sputters and quits, it might just make it to 375. You're not talking about that much more fuel. And, if you do get every last drop out of there, who's to say how far it will go.
On my last fill up, the DIC said .38 mpg better than the actual mileage (which appears very close to yours). That's within 2% (1.87%) so that's to say that if you really do run till it chokes and sputters, you'd get 373 miles on an estimated 380. Yea, it's optimistic, but you could also say that if you were really low on gas, you might drive more sensibly and get 4mpg better out of the last two gallons! :p
All in all, I don't think it's estimating that bad. The estimate it gives you is based upon the # of gallons in the tank and the current average mileage. That number can vary depending on the last time you reset it, or the car reset it. I don't know the conditions under which it resets that, but it has done it to me some times for no apparent reason.
But if you think about it, it's at 315 and saying you can make it to 345 after an original estimate of 370-385, that's probably a good guess. IFFF you wanted to run it till it sputters and quits, it might just make it to 375. You're not talking about that much more fuel. And, if you do get every last drop out of there, who's to say how far it will go.
On my last fill up, the DIC said .38 mpg better than the actual mileage (which appears very close to yours). That's within 2% (1.87%) so that's to say that if you really do run till it chokes and sputters, you'd get 373 miles on an estimated 380. Yea, it's optimistic, but you could also say that if you were really low on gas, you might drive more sensibly and get 4mpg better out of the last two gallons! :p
The pump is suspended in the tank. The fuel cools and helps to lubricate the pump. I ran out of gas several times in my C4. Each time, within a month, the fuel pump failed and had to be replaced. Fortunately changing a fuel pump on a C4 takes 10 minutes - on a C5 I don't even want to think about it. Don't run your C5 dry.
09-13-2012, 06:47 PM
#15
Melting Slicks
09-14-2012, 06:17 AM
#17
Melting Slicks
Member Since: Oct 2007
Location: It's true money can't buy happiness, but it is more comfortable crying in a Corvette than on a bicyc
Posts: 2,798
Likes: 0
Received 5 Likes
on
5 Posts
St. Jude Donor '13
The pump is suspended in the tank. The fuel cools and helps to lubricate the pump. I ran out of gas several times in my C4. Each time, within a month, the fuel pump failed and had to be replaced. Fortunately changing a fuel pump on a C4 takes 10 minutes - on a C5 I don't even want to think about it. Don't run your C5 dry.
Here's one of many interesting articles about it.
http://www.ehow.com/info_12206859_ru...-pump-bad.html
Last edited by Camjamsdad; 09-14-2012 at 06:24 AM.