Horrible Gas Mileage

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Dec 7, 2013 | 09:41 AM

#226

labidus

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Joined: Nov 2013

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Quote:

Originally Posted by Mustang5L5

If it takes 45 min to drive 9 miles, that's your issue there. Just sitting in traffic idling will burn a LOT of gas.

A honda civic hybrid is not a good comparison because when idling, the engine shuts off.

I hate to say it and be "that guy", but if you bought your g35 for fuel economy, you bought the wrong car. It's just not very efficient. My previous v8 mustang GT actually got better fuel economy than my G35.

I dont think it will take 13 MPG for that, also usually the time is more like 25 min but sometime it take more, last week not that much traffic, i dont waste time on light, I am driving on road with max limit of 50km, but the rpm is around 1000-1500 most of the time.

I am pretty sure the car sensor are going bad or something along that line...

I can do better with my previous jeep grand cherokee v8 lol

Dec 7, 2013 | 03:30 PM

#227

labidus

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funny thing I just found one bluetooth adapter that I buy 2 year ago lol

So I connected the device, the car was running in idle here the attachments.

Attached Thumbnails

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Dec 7, 2013 | 06:26 PM

#228

jutn35

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G35 Coupe

i get 420 miles on a full tank. i fluctuate between 20 to 21 mpg. When i drive long distances i use cruise control and keep the car at 60mph and stay in the slow lane. (2000 rpm). And i only use 91 premium

Dec 9, 2013 | 08:26 AM

#229

labidus

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Here another shot driving at 30 miles limit

So the MPG seam ok, I was able to do better then that, but I am not sure if torque calculate MPG correctly... Because my real mileage is worse then that

Attached Thumbnails

Horrible Gas Mileage-screenshot_2013-12-09-07-33-29.png

Dec 9, 2013 | 09:27 AM

#230

Mustang5L5

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From: Taxachusetts

31.2 MPG seems very high.

You really gotta do the fillup method and get your MPG based on that.

Dec 9, 2013 | 09:44 AM

#231

labidus

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I updated my screen, I will have more sensors and removed the bad display, tonight i will have better infos, including average mpg/l100km also with correct o2 sensors

Its hard to take a screenshot when you drive, screenshot on android is not really working well...

I just discovered that my MPG was not in US but imperial unit, so tonight I will get the real numbers

Last edited by labidus; Dec 9, 2013 at 10:31 AM.

Dec 9, 2013 | 11:18 AM

#232

Mustang5L5

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From: Taxachusetts

31.5 imp gallons is 37.8 US gallons. Still too high

Dec 9, 2013 | 11:33 AM

#233

labidus

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Quote:

Originally Posted by Mustang5L5

31.5 imp gallons is 37.8 US gallons. Still too high

No its the inverse

32 MPG imp is around 25 MPG us

Dec 9, 2013 | 07:05 PM

#234

labidus

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Joined: Nov 2013

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Here more infos, its seam I cannot get the Air fuel ratio so far, you see the min max value

I made 3 shots, 2 while on road, the 3 is at end on idle.

Attached Thumbnails

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Horrible Gas Mileage-screenshot_2013-12-09-16-45-06.png

Oct 29, 2019 | 02:21 PM

#235

Xavier Bienaime

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Joined: May 2019

Posts: 26

Likes: 1

From: Florida

Cat back, test pipes, k&n intake, short shifter

Quote:

Originally Posted by mike_gt2

Hi guys, I'm new to this forum and a first time G35 owner. I bought my 2004 G35 coupe about 6 weeks ago. to begin with i knew it wasn't a very fuel efficient vehicle but the gas mileage im getting is ridiculous. i do mostly city driving and i knew i probably wasn't going to get the 19mpg it says but im only getting 11.5-12 mpg on this car. i get only about 200 miles a tank. Service engine light isnt on. had the spark plugs replaced with new titanium tipped spark plugs, replaced the air filter, and i put premium Chevron gasoline. any recommendations you guys may have would be greatly appreciated. Engine Oil has been changed recently(when i bought it) and on a side note i drive it lightly, not lead footed at all. thanks in advance

This is EXACTLY what im experiencing and its killing my wallet

Oct 29, 2019 | 04:41 PM

#236

Bassman

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Joined: Apr 2009

Posts: 334

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From: New Britain CT USA

I used to have a 50 mile highway commute each way. I found that I got better mileage with mid-grade gas cruising at 65-70 mph, about 22mpg with my G35x. 13-14 mpg around town max.