can anybody help with my "09 Base auto gas mileage?

1) i always put shell / chevron 87 octane
2) bought lightweight battery
3) remove the back seat and spare tire to reduce weight
4) bought aftermarket air cleaner - AFE
5) enkei 15' rpf lightweight wheels
6) oil changed every 5,000 Miles/ tires rotated and always checked for proper tire pressure

BUT somehow my gas mileage is still bad?
NO engine modification done

 

Define "bad" please?

 

i really dont undestand how that miles/per gallon thing works
on that tachometer....it says i am getting 30-35 mpg
but when i look at the FUEL GAUGE it just DROPS down FAST...

i dont drive hard, in stop light i dont jack-rabbit. i always drive by the posted limit.
but still gas mileage is not good.

nothings wrong with cars electronics, or its engine ...its HOW IT EATS GAS...

will it help if i do a CAI?
any suggestions....



(does anybody know when the gas is going down)

 

OP you have any idea how to calculate mileage? I suspect you failed math.

 

That thing is your friend - the Maintenance Minder. It tells you the MPG as well as when to change the oil and service the car. Read-up about it in your Owner's Manual.

Not seeing a real issue with the MPG, what's the average show most times?

You can watch the fuel gauge, but dividing the miles driven by the amount of fuel used will give you a real good idea.

K_C_

 

With all those things you did, you should AT LEAST be getting over 30 mpg.

Like others have said though, what are you currently getting? Fill tank up, about 8 to 8.5 gallons. Divide your total mileage by gallons filled, easy.

 

I'm a quarter down on my second tank of gas.
452 Miles on the odometer, avg mpg according the ecu is 33.5. which is fantastic since I'm still in the break in period. Car is still stock. Only modification is the extra 200 pounds she has to carry when I'm driving.

 

Hey phenoyz,

Two things to help here. The reason the tank is going down quickly is because you are not putting enough gas in the tank. Once it clicks off, you can easily put another dollar or two in due to the long neck. Do that.

Also, if you increase your air pressure to 45 psi, you will see a very nice increase in mileage.

I drive in very high mountains all of the time, and over 3 yrs of driving I consistently get 41 - 43 mpg....this is on a manual stick, which I prefer.

 

Yes, I don't completely fill-up. I try to budget it $25/fill.
Its almost full anyways. Will try to do what you say
next time i fill-up.

With the tire pressure I think i will follow what is recommended which is
32psi. isnt it dangerous to put "MORE" air than what is recommended?

Thanks.

 

I run at 36psi. To me, anything over that effects handling in a bad way.

 

Only dangerous if you inflate them over the MAX PSI rating for your particular tire. I like to run mine at 35 F and 35 R most ofthe time. Higher pressure usually associates with less rolling resistance,
which is good. Too high a pressure and the tires break free easier.

 

does anybody knows the original spark plug for a 2009 Base automatic?
which is better DENSO or NGK
i might replace it and see maybe gas mileage will improve.

 

Krimson_Cardnal has it nailed:
Watching the fuel gauge will in no way, shape or form tell you your MPG. The Maintenance Minder does tell you your MPG (or at least an approximation).

Judging from your post your getting very good MPG (30-35 mpg). Your only problem is one of perception. Remember that the Fit's tank only holds a little over 10 gallons, (small even for its class). Add this to your not filling it up each time will give the misleading impression that you are using a lot of gas when in fact you are not.

Before you try to solve a problem you don't have with spark plugs, tire pressure, etc., learn to calculate your MPG as Krimson_Cardnal describes or at least judge your MPG with the right gauge which is the Maintenance Minder.

EDIT: The Tachometer is the gauge on your far left tells you your RPMs. The blue box directly in front of you is your maintenance minder

 

can anybody tell me what is the complete model name of that
DENSO spark plug? IK22
this is for a '09 Fit base.
i cant find it here.

is this pulstar good?

Sparkplugs.com - Application Search Results

 

I changed out rims and tires and removed 70 pounds of rolling mass. This is my 2nd tank of gas and have seen a Huge improvement I've only used 1/2 a tank and am usually 150 miles, nothing to brag about for sure. This tank is at 210 at the 1/2 way point. I'll have MPG after fill up. But lite wheels and rims improve MPG in a big way! not to mention getup and GO!!
Also saw improvment w/ Mobile1 0/20 full synthetic motor oil and Mobile1 syn. ATF and hitest Exxon gas.
Big Mike

5/14/11 Filled up and m. div. into g. = 32.75 mpg around town! the best I've ever gotten.

I'm a Happy Dog!

 

The fuel gauge is going to drop relatively fast because the tank is relatively small. What is your average mpg? If it's 30+, then you are doing pretty well.

 

Hey.

minder says 30-35mpg. But it really doesnt matter because the
the fuel gauge just drops fast.

This is whats happening to me, from another member = https://www.fitfreak.net/forums/tell-honda/64698-poor-choice.html

 

Again, what is your actual MPG? That is, when you fill up, divide the miles driven by the gallons of fuel put in. If your actual MPG is in the 30-35 range, then I don't see the issue. The fuel gauge is dropping at the rate that it is because there's only an 11 gallon tank. How fast should the fuel gauge drop?

 

If you drive 400 mph you can actually see the fuel gauge dropping.

 

400 mph in a fit? AWESOME! What mods have you done?