I have about 2300 on mine now and am averaging about 24mpg mixed highway and city. The worse I got was when I 1st got it but even that was about 20mpg.

Doug

2004 6MT, Desert Platinum, Side Molding, Splash Guards, Sat. Radio

Asheville,NC

 

I just filled up for the first time and it took 8.55 gals for 165 miles. That translates to a 20 gallon excursion of 385 miles or 19.3 mpg.
With the trip computer I can coax my instantaneous average up above 25 but it is no fun because you have to coast a lot. It is one of those universal parodoxes: I have more fun when I'm wasting gas. It is unfortunate that to be environmentally friendly sucks the fun out of the car. I guess I should buy a Prius to make up for being a bad boy whenever I get into the G. [img]/w3timages/icons/blush.gif[/img]
Fun wins every time !! [img]/w3timages/icons/laugh.gif[/img]

 

I have gone about 750 miles and I am consistently pulling 19 mpg over the tank. I am primarily highway, but I have been driving the hell out of this car.

Course by the same token, my mpg in my Maxima has gotten much worse also cuz when I drive it I am downshifting much more often to get closer to the power of the G All in all this G is going to make me single handedly cause a gas crisis.

Some mistakes are too much fun to only make once.

2004 G35 coupe - 4150K high/fogs - more to come

 

After my first oil change at 3750 miles, my mileage immediately shot up from 19 mpg to 22 mpg. Weird.

'04 G35 Coupe DG/G/5AT/Leather/Premium. Now if I can just stop staring at the darn thing and get on with my life!

 

~9700 miles on the car.

As my car breaks in, my combined tank-to-tank average MPG has gone up from 19.6 to 21.8 mpg. I'm a pretty aggressive driver and do about 75/25 highway/city driving.


I keep wondering if there is a correlation between MPG and hp? I would think that if you could compare two G35's, and manage to eliminate all other variables except that one has higher rwhp it should get better gas mileage since you're getting more energy out of each gallon of gas?

The inverse would also be true. Higher mpg cars would have higher hp.

There'd be no way to prove this without a controlled environment. The two cars would have to be subjected to the same criteria (such as both being tested on the same dyno going a steady 80 mph).

I'm not suggesting that based on the postings above you can figure which cars are stronger than the others solely based on their mpg readings. In real world driving, some people do more city driving, get stuck in more traffic jams, drive shorter distances, etc. This is just an exercise in conservation of energy...

 

SoCal,
I don't mean to disparage your argument but the truth is just the opposite. MPG is optimized by gaining more miles while using less fuel. You will gain more mpg while in 6th gear than in the lower gears (which get you to the higher rpms where the max power and torque are found). I won't even get into the fact that higher speeds increase drag another fuel parasite. ( Even though you are getting more miles per unit time you are really peeing away more gallons to maintain or increase the speed).
So, you will find more hp and speed with higher revs (if you have the traction) but this requires more fuel. While this does put more miles in your numerator it simultaneously extracts more gallons from your denominator; more gals are extracted than miles, hence, lower mpg.
Similarly, you can get more miles out of your numerator for fewer gallons by coasting- this occurs in the higher gears and of course in neutral you can really get over 1000 mpg instantaneously but not for long. Plus it is sooooo booooooring!! [img]/w3timages/icons/tongue.gif[/img]

 

22 MPG, mix city and highway, still in break-in at 1100 miles.

2004 G35C 6MT, Black/Willow, Prem, Aero, Nav

"Some mornings it just doesn't seem worth it to gnaw through the leather straps." -- Emo Phillips

 

<blockquote><font class="small">In reply to:</font><hr>

SoCal,
I don't mean to disparage your argument but the truth is just the opposite. MPG is optimized by gaining more miles while using less fuel. You will gain more mpg while in 6th gear than in the lower gears (which get you to the higher rpms where the max power and torque are found). I won't even get into the fact that higher speeds increase drag another fuel parasite. ( Even though you are getting more miles per unit time you are really peeing away more gallons to maintain or increase the speed).
So, you will find more hp and speed with higher revs (if you have the traction) but this requires more fuel. While this does put more miles in your numerator it simultaneously extracts more gallons from your denominator; more gals are extracted than miles, hence, lower mpg.
Similarly, you can get more miles out of your numerator for fewer gallons by coasting- this occurs in the higher gears and of course in neutral you can really get over 1000 mpg instantaneously but not for long. Plus it is sooooo booooooring!!

<hr></blockquote>

Adnama, I don't disagree with what you're saying but that wasn't the point I was making.

What I'm saying is that a car that is running optimally will use LESS fuel than one that is NOT running at peak performance. Hp readings are an indication that a car is running optimally.

If two stock cars drove side-by-side and accelerated the same and cruised at the same speeds, you should be able to show that the car with the higher hp would get better mpg. Maybe less parasitic losses, better air flow, cleaner burn, whatever...

An exception to this could be that one car is running a richer fuel/air ratio which would mean they're also burning more fuel...

 

Im at a quarter and I only have about 200 miles on this tank, seems so low.

-------
Mike
'04 6Mt Diamond Graphite Coupe
Prem. / Aero / 18" Sport wheels / Trunk Mat

 

"Im at a quarter and I only have about 200 miles on this tank, seems so low."

'Sounds like mine; grrrr!


2004 6MT (Silver/Willow), premium & aero packages

My old ride (I still miss her; put a lot of pride and joy into it): http://www.n-body.net/registry/john95ga/

 

According to the Nav (which appears to be between .5 and 1 MPH optimistic), I've been generally getting between 24-26 MPG, but I don't leadfoot it that often, and drive mostly on highways.

 

In the beautiful city of Los Angeles, driving a nice mix of city and highway, I get a measly 15.4 MPG. My car has only 3800 miles on it, does it get better over time?

afsarzad
'03 G35 Coupe Caribbean Blue/Blk
Sport / Areo / Nav etc...
Chrome GF-1 20s / 35% Tint / Clear Corners

 

City and highway driving I get 25.1 MPG according to my Navi.
And I have 24k miles on my car.


2003 G35 Coupe 6spd