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Discussion Starter #1
I'm sure this is the millionth gas mileage thread, but what I'm looking for is kind of a checklist of items I can go down to see if any of them cause bad gas mileage.

Anyway, I just bought my 2004 XE CC 4x4 a couple of weeks ago. At my last gas fill-up I noticed I only got 11.3 mpg (and I even have the small tires on still). What are some things that I should check that could cause this bad mileage? The first thing I thought of was the air filter, it looked like a stock white paper filter, and it looked clean.

Thanks for any help guys.
 

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Get a fuel system flush.
Use at least 89 octane gas, 93 would be better.
Try to loose some weight off that right foot.
The stock tire is not all that small.
 

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well, when i first got my used 05 Titan last September, i was like you, only getting from 11 to maybe 12 mpg. but since then, ive been getting about 15mpg.

only thing thats different now is the weather. and ive always used the next grade up in gas. but my Titan also has 18" ers, and Banks exhaust w Nismo CAI. and i know that helps inhaling gas! but ive resigned myself to the fact that its a truck, and "bad" gas milage goes w the beast. :)

i suppose a Toneau cover would help some. either way, enjoy ur Titan for what it is, and dont let the mpg's bum u out.
 

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Discussion Starter #4
titan4740 said:
Try to loose some weight off that right foot.
I meant to mention this in my original post, but I drive it very very easy on the throttle.
The stock tire is not all that small.
I just mean that since I have the XE I have the smallest tires that come on the Titans.
 

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1. tires between 36 and 40 psi.
2. try to keep RMP's under 2K.
3. 87 octane should be fine. Do a search no proof of higher MPG with better grades. The engine was designed for 87.
4. brake as little as possible, Drive smoothly.

I get a consistant 14-15 mpg and I don't drive like a granny.
 

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I have always been around 12.5 mpg around town. I just Put on 325-60-18's and the mileage so far seems to not have changed at all. I usually take it easy on the gas pedal for the most part. I still don't know how anyone gets 15 mpg around town.
 

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titanmike said:
I have always been around 12.5 mpg around town. I just Put on 325-60-18's and the mileage so far seems to not have changed at all. I usually take it easy on the gas pedal for the most part. I still don't know how anyone gets 15 mpg around town.
15 is nothing, some guys posted 16-17 around town...lol.
 

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Bigger tires/wheels, lead foot....these are probably the main contributors to bad mileage. When my truck was stock, we took it on a road trip and it averaged about 7km per litre. I checked the mileage last week and it was 5.2km per litre (with banks, tbs, 2* advance and 24" rims), Im guessing I mustve drove it harder though cuz thats a huge difference.
 

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titan4740 said:
Get a fuel system flush.
Use at least 89 octane gas, 93 would be better.
Try to loose some weight off that right foot.
The stock tire is not all that small.
89. or 93 aint going to get your better mileage to offset the cost of it.
 

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Nothing with a big gurly V8 like ours is getting "good" fuel mileage. It just goes with the territory I guess. If mileage is what's needed and you don't need all that brawn for hauling, try the smaller Frontier with it's hefty V6.
 

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My '06 BT, KC, 4x4 all stock except a topper gets almost exactly what the sticker says. i.e. 13 mpg city and 17 mpg highway. 87 octane only. I just got back from a 300 mile road trip and got 16.4 but I was doing 80-85 on the freeway bucking a head wind. The worst I ever got was 12.4 driving around town. I TRY and keep my foot out of it in town. Its a truck with a big a$$ V8. What do you want? Toyo's, Fords, etc are the same way. :rollingsm

Hey jbglenn! How's the Greatland? I used to live up that way. Do you have a block heater? Cool avatar! USAF 81-85.
 

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Just filled up my 06 CC. With gentle driving in town (Phoenix Area) I got 14.5 MPG. I've got 12K miles. Used to get better, but the gas Nazi's just switched us to 10% ethanol for summer. Pretty sure that causes worse mileage. If you aren't punching it, then your baby's sick. In all my past vehicles (Fords), I could bank on a 10% increase in mileage with premium gas. If the cost was only 10% more for premium then I would go for it. This Titan doesn't seem to care since it adjusts itself to the octane you use. Good Luck, hope it isn't a costly repair.
 

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titanle said:
Bigger tires/wheels, lead foot....these are probably the main contributors to bad mileage. When my truck was stock, we took it on a road trip and it averaged about 7km per litre. I checked the mileage last week and it was 5.2km per litre (with banks, tbs, 2* advance and 24" rims), Im guessing I mustve drove it harder though cuz thats a huge difference.
km????

ummmm, 99% of peeps in the US dont comprende km's, pls translate... :)
 

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dmi said:
My '06 BT, KC, 4x4 all stock except a topper gets almost exactly what the sticker says. i.e. 13 mpg city and 17 mpg highway. 87 octane only. I just got back from a 300 mile road trip and got 16.4 but I was doing 80-85 on the freeway bucking a head wind. The worst I ever got was 12.4 driving around town. I TRY and keep my foot out of it in town. Its a truck with a big a$$ V8. What do you want? Toyo's, Fords, etc are the same way. :rollingsm

Hey jbglenn! How's the Greatland? I used to live up that way. Do you have a block heater? Cool avatar! USAF 81-85.
Not to hijack the thread but it's nice. No block heater, I just use syntheic. It doesn' take long for the big ol V-8 to heat up.
 

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Discussion Starter #15
Nothing with a big gurly V8 like ours is getting "good" fuel mileage. It just goes with the territory I guess. If mileage is what's needed and you don't need all that brawn for hauling, try the smaller Frontier with it's hefty V6.
Its a truck with a big a$$ V8. What do you want?
but ive resigned myself to the fact that its a truck, and "bad" gas milage goes w the beast.
I understand that it is a large truck with a large V8 and that it will not get great gas mileage. However, I also know that the truck is listed at something like 13city 17hwy and that a lot of people on these forums get pretty close to that, and I don't think that 11mpg is what I should be getting, especially considering the fact that I probably never go above 2000 or 2500RPM, have the smallest tires available on a Titan, have them pretty close to correct pressure (36psi), etc.

I just wanted to find out if there could be something wrong with something in particular on my truck that is causing the bad gas mileage.
 

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Well, I get ~17 hwy @ 78 mph, and a little less in town. Seldom to I have a full tank in town, so it's hard to say what my in town is.

Truck is 2x4, all stock, crew SE with 18" wheels and stock tires, 50k miles. I'll soon have some 33x12.50's of some kind, so we'll see how bad it gets.

What's been already said is the key...drive a tank without ever exceeding 2500 rpm, keep your foot out of the throttle body, and see what happens. If it still sucks, then it's time to start looking for problems.
 

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Discussion Starter #17
Kaborkian said:
What's been already said is the key...drive a tank without ever exceeding 2500 rpm, keep your foot out of the throttle body, and see what happens. If it still sucks, then it's time to start looking for problems.
What's been already said is indeed the key, because I've already said that I am very very easy on the throttle and consistently stay under 2500RPM. :)
 

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What are you running for tire pressure and tire sizes?
 

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things that give you bad gas mileage:

lead foot
leak in air system somewhere
tire psi
bad fuel
OR or BT gears
bigger tires
elevation/climate
driving conditions
and driving habits.

one thing im trying for my next tank of gas is 40psi in the tires, and coasting to a stop for as long as possible. i also get about 11.5mpg so im hoping this will help a bit.
 

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I'm getting a little better mileage now (from 12 to 15-16 mpg) as it's heating up and I've got about 3k miles on it now.

I'd try to find someone with the kit that 3M makes that cleans your Fuel injection system. It's an aerosol can that hooks into the fuel rail and the truck will run on the can of cleaner rather than gas for a few minutes. This works wonders on OLD cars, don't know about a newish truck.
 
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