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Anyone getting BAD GAS MILEAGE?

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Old Dec 16, 2002 | 04:01 PM
  #1  
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Default Anyone getting BAD GAS MILEAGE?

I have been getting really poor miles per gallon in my Z. I remember reading that some people on the forums are getting up to 28 mpg highway and low 20's in city. When city driving, I am only getting an average of 15 mpg. The one long trip that I took, I averaged only 21 HWY.

Could this be because i didn't break in the engine well? I took it easy for the first 500 miles, but after that I drove pretty crazy. It was too hard to resist in my black Touring!

Could this have effected my engine?

:confused:
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Old Dec 16, 2002 | 04:19 PM
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it could have... it could also just be how you drive. I get about 20.5mpg. and if I am strictly highway, I hit around 25mph, or higher if it were a flat stretch.

for city driving tho, it depends how low you shift, I shift very low, like rarely go over 3000RPMs and always hit 6th. if you hit it harder, then your mileage will be worse. lately Ive been hitting it very hard, but its still hanging in there.
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Old Dec 16, 2002 | 04:27 PM
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I dunno... I'm still getting about 23.5 MPG even with some aggressive driving, although usually I'm shifting at 2800-3000 driving around town. I observed the break-in period up to about 1185 or so, then I let it go. How many miles are you at right now?
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Old Dec 16, 2002 | 04:57 PM
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Currrently at 2100 miles and have been getting about 22 mpg the entire time. About 80% of my driving is in the the city in stop and go traffic. I tend to shift at about 4k rpm on average. What is your average shift point?
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Old Dec 16, 2002 | 05:40 PM
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I am now at 2240 miles. It seems like I am getting less mpg than before. Maybe, I am just paranoid!
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Old Dec 16, 2002 | 06:06 PM
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I usually get around 19 in my daily driving. but on a couple long trips I was getting about 28 with the cruise set at 75 in 6th, two people and the ac on over fairly flat terrain.
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Old Dec 16, 2002 | 07:02 PM
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I'm at about 5000 miles and my driving is mostly city, if I'm lucky I get 19-20 mpg. Weekend that dips down to 15 mpg because of the usual spirited driving.
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Old Dec 16, 2002 | 07:10 PM
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Originally posted by aggie300zx
I'm at about 5000 miles and my driving is mostly city, if I'm lucky I get 19-20 mpg. Weekend that dips down to 15 mpg because of the usual spirited driving.
Ditto that MPG here at over 6600 miles. You just can't do better, or at least I can't, when I'm busting *** around SUVs 20+ times a day.
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Old Dec 16, 2002 | 07:12 PM
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I have a Touring 5AT and have been averaging 22-23 mpg combo driving around town. On highway only runs I get 27-28 doing around 70.
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Old Dec 16, 2002 | 09:47 PM
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I get about 21-23 mpg with about 90% of city and 10% of highway. I drive aggressively on occasion.
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Old Dec 17, 2002 | 12:35 AM
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I thought I was being paranoid about my gas mileage but I guess I'm not the only one. City driving I get about 16 mpg and there are too many cops for me to drive fast, sooo I know it's not me. It seems like my suv gets better mileage and that thing is a gas guzzler!
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Old Dec 17, 2002 | 03:48 PM
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Default gas milage

I was used to getting 23-24 average during breakin. Now I got 18 on my first tank after break in.
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Old Dec 17, 2002 | 08:57 PM
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I am getting between 20-21 mpg with about 80% highway / 20% city driving. Still in the break-in period so I don't rev above 4,000 RPM; I spend most of my time around 3,000 RPM.

Hope this helps.

Cheers,

The Bode

---

2003 350Z Touring (La Mans Sunset / Burnt Orange / everything except aero kit)
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Old Dec 18, 2002 | 04:45 AM
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I have been getting about 20-21 mpg in mostly city driving. When I do complete highway driving I get around 28 mpg when I cruise at 65-70 mph.
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Old Dec 18, 2002 | 04:54 AM
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City driving 15
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Old Dec 19, 2002 | 04:13 PM
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yeah i get about a 100 mpg on the highway and 10 around town
come on we all drive different

really 14 to 16 mostly city

havent done to much hwy but have gotten only about 18 mpg
because on the hwy i live between 80 and 120
and around town i live between 4 and 6000 rpms
zoom zooom zoooom
Attached Thumbnails Anyone getting BAD GAS MILEAGE?-plate1.jpg  

Last edited by BRICKS Z; Dec 19, 2002 at 04:15 PM.
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Old Dec 24, 2002 | 09:55 AM
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I've gotten up to 24.8 MPG now...it's been going steadily up for 3 weeks now.
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Old Dec 24, 2002 | 10:07 AM
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Iv'e been getting 23.5 average for a tank of gas. I always reset the trip meter when I get gas so I can see.

I have a standard transmission, enthusiast.
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Old Dec 25, 2002 | 08:48 PM
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whew!! glad i'm not the only one.. getting about 14mpg around the city w/ about 320 miles in it. Maybe its because i only have 300 miles.. might go up after break-in.. usually shift around 3k rpm

Last edited by s9am_me; Dec 25, 2002 at 08:56 PM.
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