Mpg

[tonybaloney]

assuming all the factors are the same (driving habits, speed, tire pressure, weight, gas octane level, wind resistance... etc), V6 is going to get better mpg than V8.

http://autos.yahoo.com/newcars/mode...VaZOQEExHrqiqvLuX9zIEc78F;_ylv=3?modelId=5556

 

[lawwailok]

replying to the above 2 posts, yes, tundra maybe with a bigger frontal area than 4R, and also the link above shows the factory EPA which is for reference only. what i am trying to say is to support the point that "rennur" stated in earlier post, v6 might/could be using similar or more gas than v8.

mine example above is just a personal reference, which me and my dad tested on our 4r and tundra for 4 tanks gas. which showed similar result, his v6 tundra never could achieve the mpg which the factory EPA stated. his tundra constant running what my v8 4R is having, which is ~14.5 city/ ~18.5-19 highway.

i am not trying to argue any point here but that's just an observation i did on fuel consuming between v6 and v8.

 

[Jeff Kleb]

My boss at work has a V8 4Runer SR5, and I have a V6. Both of them are 2005 models and both have four-wheel-drive. My V6 gets better mileage - but only very slightly - than does his V8. I have a much heavier foot than he does, though. I suspect that my margin of 'fuel economy' would be greater if he drove with the same sense of urgency as I do.
:zoom:

Anyway, the V8 may not have to work as hard.....but keep in mind that the V8 models are in 4x4 mode all the time, while those of us with the V6 can choose two-wheel-drive.
:chair:

The good thing is that the 4Runner can run quite well on regular unleaded. I've tried putting in premium fuel once in awhile, but I can't seem to notice much of any difference in how it drives and how much fuel it burns.

 

[knightsfs4]

Hello All,

this site was really helpful in allowing me to purchase my first 4runner. It's 1999' 5-speed manual, SR5 3400 4cam 24. One thing i discovered after the fact, and the hard-way i may add, is that my fuel gauge doesn't work, i found the information regarding the recall back on 2000 and I'm hoping the dealership will fix. Without a working Gauge I'm having trouble determining the MPG.
Ive read the manual stating the tank holds 18 gal
I started with a full tank and drove 205 miles, filled back up using 10gallons.
assuming it is 18 Gal tank - 10 gal used = 8 gal @ 205 miles = 25MPG.
this can't be true...granted these were nearly all highway miles.
any ideas.??..I don't want to run it out of gas again or get stranded unexpectedly.

I don't mean to break it to ya buddy, but this thread is 5 years old and isn't relevant to your question. Also, this is the 4th gen forum, you have a 3rd gen.. :uzi:

 

[stevec5000]

Just filled up Friday and reset MPG meter and I'm at 12.8 I believe and I haven't left town (all 25MPH short trips). I had my 4R since January and have determined that the MPG computer is always 1.5 to maybe 2 MPG high. I average 19 (by the computer ) on highway doing 75 or 70 (depends if I'm on interstate or not). I was expecting a little better out of the V6.

You must have something seriously wrong like a clogged air filter or bad sensor in the EFI system unless all your trips involve drag racing. Mileage that low means you are using so much fuel that you are going to foul the plugs. I normally get about 21.6 MPG around town on short trips, 24-26 on the freeway.

 

[ran]

I bought my SE V6 new. It was about 6 monthes before the highway MPG finally broke 20 MPG, always in the low 19"s for the longest time. Instate use, I hit 23-24 now.
__________________
'07 SE V6 Destination A/T 265/70/17

 

[nevada]

i know this is an old thread, and old posts, the OP will likely not see these...

Well it's a new truck so I doubt anything is clogged. I've used 91 octane fuel since the day I got it. Since premium burns hotter, does that means it burns up faster? Could the problem possibly be that it's just burning off faster than a lower octane would, resulting in less miles per tank of fuel?

that is simply not true.

Yeah somehow I don't think that would be the problem when I just got through explaining that it went up 3-4mpg just switching to regular fuel, thus proving that premium burns off faster since it's a higher octane and burns hotter.

again, not true.

i wont turn this into an octane thread...im sure there are plenty around. but, research it.

 

[DC runner]

Yea. Correct. All octane does is impact pre-detonation, which can impact MPG based on the amount the engine has to adjust the timing.

Going above what the engine was designed to run on doesn't give any gain. 87 runs fine, 89 (which it was meant to run) is perfect and 91 is a waste.

Money... down... the drain.

I run 87 all the time, 89 when I tow. I do like to get 100% of the possible power from my engine and not force it to adjust timing as much.

In today's cars; really only fancy ultra tuned race cars or luxury cars with real sensitive engines need 91.