new truck low mpg

New 2011 trd off road double cab. I didn't do mpg on the first tank of gas because I wasn't sure if the dealer actually topped it off all the way. I just did for the second tank and it's 11.76. Now I live in pittsburgh and it's crazy hilly and I did have it in 4wd one day for maybe 8 miles, but I've been trying to break it in super easy and have been driving it like an 80 year old man and keeping it under 3k rpms at most usually more like 2.5k for normal driving. If I was driving it hard I'd be getting like 8mpg. Does it get better? It's got just over 500 miles on it so far. Is this normal or should I be checking something? It's a truck and I don't expect to get 30mpg but I would think high teens would be nice. I mean hell my dad has a gmc with a 454 in it and it get around 10 and it's 15 years old.

 

Was 93 octane gas btw.

 

The truck needs time to break in. I dont believe octane makes much of a difference at all. Where does your dad live? What is his gas ethanol content, whats yours? Whats the temperature where he lives or where you live?

 

Welcome to the club... Winter gas is killing me!

 

If its brand new take it right back to the dealer. I don't know if they would help you but you and I both know you should get better than that. I'm on winter gas with big tires and get way better than that. I was getting almost 21 when I got mine.

 

Put a few more miles on it, winter weather takes a mile or two off, keep it under or at 2 k RPM's if you can and see the difference 4 wheel drive takes it toll too, it will get better. My mileage droped to 16.4 in town this winter from 18.3 last summer.

 

Welcome...Something is not right, I live in the mountains as well and I am up and down them all day. Even with the winter mix you should be averaging about 13.mpg avg. thats with the Mtns and winter mix. Summer I avg about 15. and I have the DC 4X4.

It may have not been completely filled the first tank.

 

yea bro id take it back to the dealer.. i bought my 2011 dclb 4 months ago and its stock as of now but im gettin around 20

 

Welcome! As 08pretaco said check the ethanol content. I avg 1 mpg better when I use fuel that has no ethanol. Wouldn't know where the other mpg's are going though.
Edit: I'd take it back to the dealer also.

 

I only get 14.9 MPG using the 89 octane corn gas here in northern WV. I'm sure since I have been warming my truck before I drive I'm now only getting 13 MPG in the winter.

 

its winter fuel. everyone gets shitty gas milage in winter because of the fuel mixture. i usually get 18ish but since winter ive gotten 12-14

 

also , take it back to the dealer and get them to put a different oil in it. that makes a lot of defference when it comes to gas mileage.

 

Winter fuel and ethanol SUCK.

 

I have actually gotten relatively good mileage on my '11 Taco. My average is 18.6mpg with only winter driving (since I've only owned it since October, already have 5K miles on it).

 

I just bought my 2011 TRD Off Road double cab, and I'm getting horrible gas mileage also. Maybe 10-12 mpgs.

 

i was doing same thing but you just gotta break in the engine.
like im at 1600 miles and im getting about 18. it goes up slowly but surely.
but when i got it i was at around 12

 

Okay, that's what I was hoping. I filled it up wit 93 this morning to see if that would make a difference. I guess it doesnt help that I drive into DC everyday.

thanks