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gas mileage woes with brand new car

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Old 08-11-2002 | 02:50 PM
  #1  
blacknight's Avatar
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From: Mission Viejo, CA
Post gas mileage woes with brand new car

The dealer filled it up when I left the lot which at that time the car had 43miles and now has 156 and has used 3/4 of a tank of gas. I use a real light foot on the gas but just enough to shut the shiftskip light off. My average speed I have been driving has been 45 in stop and go. I started using fifth gear now. I know my mileage will improve with the more miles my car racks up. Have any advice to get better mileage. My 89 5.0 mustang with 142,000+ gets 16+ on the same type driving.

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2002, M-6 Blk with grey
leather,hurst
shifter,3.42 gears with
with ASR and power
everything,500 watt
stereo with cd stacker
Old 08-11-2002 | 10:11 PM
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Capn Pete's Avatar
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The key here is, The Dealer "filled it up" . The Dealer "filled" my car too. Yep, the needle was on the full mark all right, but it seems that when I "fill it up", the needle actually goes above the full mark. Hence, when I picked up the car from The Dealer, I only got a couple hundred kilometers, and I drove very nice for the first tank before I started getting a little heavy with my right foot, so before you start worrying about a bad gas mileage issue, wait until you "fill" the car, and then see how your mileage is!!

BTW: don't trust your gas gauge either! When it reads 1/4 tank (remaining), don't go too far from a gas station!!! The SOB starts dropping faster and faster after 1/2 tank!! Or, my car is just f'd up!

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2002 Z28 - A4, 2.73's, Blk/blk, leather, T-tops, sport appearance package - just bought on June 26, 2002! - Pics

1981 Z28 - 383, TH350 trans., 3.42 posi - sold August, 2000 - Pics

1973 Camaro - Dad's & my project in the works - to be built: 355 Chevy, 11.5:1 pop-ups, "camel hump" heads (w/2.02 valves), solid cam, 4-speed.....it should be quick! - Pics
Old 08-12-2002 | 02:18 AM
  #3  
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From: Killen,AL.
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[I've got a 02 Z,auto.Just rolled over 4500 miles.I've been getting around 23 miles per gallon average and I'm a pretty agressive driver.

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2002 Z-28 Death to All Mustangs!
Old 08-12-2002 | 05:23 AM
  #4  
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From: The Woodlands, TX, USA
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You just need to break it in. When I first got my car, I would run about 180-200 miles per tank, now after 8 months and 13,000 miles I get anywhere between 230-260 miles per tank.

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2002 Trans Am
NHRA Package
Mods
SLP lid
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In the mail: SLP Loudmouth
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Old 08-12-2002 | 06:38 AM
  #5  
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It will improve.


The was getting like 10mpg origionally, so far, 1200 miles, 16-28.


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-2002 Red Camaro SS
Chesapeake, Virginia
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Old 08-12-2002 | 06:59 AM
  #6  
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<font face="Verdana, Arial" size="2">

BTW: don't trust your gas gauge either! When it reads 1/4 tank (remaining), don't go too far from a gas station!!! The SOB starts dropping faster and faster after 1/2 tank!! Or, my car is just f'd up!

[/B]</font>
your car is fine. the gas tank is shaped like a "V" so that every last drop of it gets funneled to the bottom of the "V" where the fuel pickup is. and another reason to make sure youre near a gas station at the 1/4 mark is the dreaded fuel pump burnout. it happens all the time when there isnt enough fuel around the pump to keep it cool and the poor little pump just gets too hot and craps out.
Old 08-12-2002 | 09:53 PM
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<font face="Verdana, Arial" size="2">Originally posted by chud:
your car is fine. the gas tank is shaped like a "V" so that every last drop of it gets funneled to the bottom of the "V" where the fuel pickup is. and another reason to make sure youre near a gas station at the 1/4 mark is the dreaded fuel pump burnout. it happens all the time when there isnt enough fuel around the pump to keep it cool and the poor little pump just gets too hot and craps out.</font>
That's what I figured was wrong with the gas gauge, but I never knew about the fuel pump issue. It makes sense though, and it's probably the reason the pump just died in my friend's '96 T/A?? Thx for the input.

BTW: my car has been getting progressively worse gas mileage since I got it, but I've also been driving it progressively harder since it's been broken in more!! I'm sure if I drove proper, it would be getting better mileage now (with 3500 miles and its first oil change) than when it was first new!?

[This message has been edited by Capn Pete (edited August 12, 2002).]
Old 08-13-2002 | 03:52 PM
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From: Lapeer, Mi, USA
Cool

Gas gauges are not exactly the most accurate of gauges. With each new car I do my own calibration. Know one guy who is empty at 1/8th of a tank. My Z still has 3.8 Gallons in it when it is on the E.

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2002 Z28 Onyx Black, A4, SLP Lid & K&N. More to come!
Old 08-13-2002 | 04:26 PM
  #9  
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From: Marysville, OH
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If you run your car a little lower on gas then anticipated don't worry. I've run my car real low on gas many many times and never had the fuel pump go out on me. I used to drive 360 miles between Michigan and Kentucky and sometimes I would forget to stop for gas. I've run it all the way to E many times without failure.

I guess I'm just lucky.

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- Steve - 1998 Pontiac Firebird Trans Am
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