I just computed my MPG to be 22.4. My G has stock wheels and tires, I use premium gas and I try to coast to the light as much as possible. I filled up before a 200 mile highway trip which took about half the tank, since returning from my trip I have been on the highway once for about 20 miles, the rest was on surface streets, stop and go type stuff. I know the mileage will decrease since I don't do a whole lot of highway driving, I guessing I should get around 17 MPG or so for my next tank.

BTW - I have about 2800 miles on my car.

 

Repeat after me: The G-35 is NOT an economy car. If I want an economy car, I will buy a Honda Civic. Once again,...

 

If by economy you mean good gas mileage then I think the Accord Hybrid would be a closer competitor. As far as the accord hybrid goes. It is a great car. I looked at it when I bought my G35. It had everything I wanted. Accept it was front wheel drive. If you can live with that and you want good gas mileage than there is currently your only option. The G is fun to drive but it is not capable of getting good gas mileage. You will drive it like you are an Andretti and love every minute of it!

 

Actually this is based on about 2.5 tanks of gas now. I'm not calculating them based on fill ups. The computer is doing the calculation, which I assume is based upon its read of gas consumption vs. miles driven detected by the computer, so I don't think it should be subject to differences in fill ups.

I just hit 500, so I'm going to take it in for an oil change next week and try the ECU reset. Whether or not that will make a difference seems a bit controversial, but it can't hurt.

 

The g35 is NOT an economy car. If I want an economy car, I will buy a honda civic......

 

The 2004 TL is revving only about 1750 RPM @ 60 MPH, while the '04 G35 revs 2150 or so (both being 6MT's), so no doubt he gets better mileage on the highway.

I get about 21 MPG in my 6 MT, and although I don't drive too hard all the time, it does see redline at least once per day . I drive about 60% rural and 40% suburban/urban stoplight and some freeway (both fast & slooooow). I get about 23 MPG on long trips, running 80-85 MPH or better.

My $0.02

 

Second week of really tracking my MPG and I just got 21.5. Not to bad considering I drive 60% stop and go and the rest highway. For those interested I have a 6MT and for the past few weeks I've been trying to drive conservatively, meaning, I shift around 2500 to 3000 RPM and anticipate/coast to lights. I know I'll probably get flamed because driving like this is no fun, I should have bought a Civic, etc. But, for the time being I'm more concerned with the cost of gas, which by the was was at 3.03 for 93 this morning, than driving spirited... LOL

 

03.5 5AT, slightly modded .. had it since new

8.0 to 15.1 racing
18.5 around town
23.6 long trips
21.5 long trips fully loaded, avg 75mph

-T

 

Finally got some decent numbers;

Changed the dirty oil and took her on a road trip this weekend, tried to stay around 80 mph, full trunk, 3 people in the car, A/C on most of the time... 24.3 mpg AWSOME!

 

24 with a full car and a/c on? That's darn good. I get around 20 pretty consitently with the a/c on, about 50/50 highway city, so that seems on the high end of average. Nice.

 

sorry for the stupid question, but how do you guys without navi keep track of miles per gallon? usually I fill up 14 gallons and then refill when the meter is at 1/4 tank. So I divide the miles driven by 14 every time I fill. Is there a better way to do this?

 

I change gears 2500 RPM or below.
Mostly freeway; 25% city
Second gas taank I got 25.2 MPG (real measurement).
By the way the MPG gauge from the NAV unit is pretty accurate(within 1 MPG).
Now I am pushing it more since I am in the last stage of the breaking-in procedure. I go occasionally to 3500-4000 RPM; MPG around 23.
Since I just made it to 1000 miles I am hopeful mileaage will improve perhaps by 10% later.
I think the 05 6MT has same gas mileage as 03 6MT Maxima.
I disagree thaat people drive the car hard all the time. Think all the pollution it is creating. I read 1 gallon of gas after burn produces 20 lbs of CO2 (after condensation). I like going easy on the gas and once in a while show off a Bimmer or TL.

 

First fill up the car and set the odo at zero.
Drive until you need gas again. (ie 300 miles)
On this fill up record how many gallons it takes to fill up the car (ie 15.0gal)
Do the math 300 divided by 15 equals 20 mpg

 

What he said.

 

Does anyone know what effects just a K&N filter alone have on gas mileage?