Real World MPG with 5th Gen?

[1000MPH]

I've posted this before in another thread...

...above 22mpg on the hwy requires excellent conditions with an additional factor. Usually a tailwind, slight descent, or under 65mph speeds.
I can see that in the Summer but not in the Winter.

I would not expect 90% of the folks on this board to achieve the mileage I get.
I'm stock with Michelin street tires.
Air pressures are maintained at 36PSI min.
My morning commute is 4 miles of side streets.
Truck is garaged.
Most of my mileage comes from 65-75 MPH back highways.
I travel at night or early mornings.

I do a lot of off road but it's still maybe only 1% of my driving.

Here's my last 2 months...

  mpg odometer miles gallons price fuelup_date
21.4	87543	344	16.077	2.299	12/30/2017
20.78	87199	136	6.545	3.299	12/29/2017
20.69	87063	198	9.572	2.899	12/29/2017
20	86865	145	7.251	2.759	12/28/2017
21.45	86720	282	13.146	2.899	12/24/2017
22.34	86438	201	8.997	2.539	12/23/2017
16.88	86237	147	8.708	2.749	12/20/2017
20.72	86090	394	19.014	2.299	12/1/2017
20.91	85696	265	12.671	2.899	11/29/2017
20.74	85431	432	20.834	2.999	11/28/2017
20.77	84999	318	15.313	2.689	11/25/2017
23.24	84681	368	15.838	2.389	11/7/2017
20.93	84313	212	10.13	3.289	11/6/2017
22.97	84101	207	9.01	3.179	11/3/2017
19.04	83894	194	10.188	2.439	11/3/2017

 

[Toybota]

Doesn't changing the tire size make the odo, speedo, trip meter, mpg display, etc. all inaccurate because a larger tire is covering more distance per revolution and the computer is not calculating for that?

 

[T4 Leaf]

Anyone else's fuel mileage take a hit with the colder temps lately?

With less than 1000 miles on the odo she's still a long way from getting broken in, but I was actually fairly pleased with the mileage before this cold snap (wasn't hard to hit 20 mpg on the highway at 70+). It's now been below freezing in North Texas for several days now, so all I can figure is the low temps+winter blend fuel is killing the fuel mileage since it's quite a noticeable difference. This was also my experience with my last Ford Ecoboost, but was just wondering what you guys have experienced.

KPT...exactly why I clicked on this thread...here in N. Texas, seen a 1-2 mpg drop with this 20 degree period we've had...avg 19.3 prior ...over the last several weeks its been 17.8. same route mostly 60 miles mostly hwy to and from work. Gotta be thicker air... (and maybe the Prinsu Rack...but it was falling prior to install.)

 

[1engineer]

KPT...exactly why I clicked on this thread...here in N. Texas, seen a 1-2 mpg drop with this 20 degree period we've had...avg 19.3 prior ...over the last several weeks its been 17.8. same route mostly 60 miles mostly hwy to and from work. Gotta be thicker air... (and maybe the Prinsu Rack...but it was falling prior to install.)

No it's not. Read the link http://www.toyota-4runner.org/5th-gen-t4rs/102219-winter-gas-explained.html
You will lose up to 10% between end of October through beginning of March every year. You just haven't noticed it til now. Yes, winter gas is necessary.

 

[UBWine09]

85% Highway
15% City
NorCal
23.5 MPG

 

[T4 Leaf]

No it's not. Read the link http://www.toyota-4runner.org/5th-gen-t4rs/102219-winter-gas-explained.html
You will lose up to 10% between end of October through beginning of March every year. You just haven't noticed it til now. Yes, winter gas is necessary.

Thanks 1Eng..... I'm happy to know that the truck or my rack is not driving this reduction... and its the "winter gas"...good info

Its usually not good to pull 1engineer out of silence, but this paid off for all of us "summer gas" people.

I want to insert some joke about the Starks, and how they are more prepared for this mpg drop than others...

 

[Jeffy]

I'm just sharing my personal experience, if you don't want to believe it that's fine with me :kiss:

As someone else pointed out, my 34" tires are much closer to a 32" (I think they measured about 32.6 at 38 psi)

Also, getting 22mpg+ is extremely rare for me, I've only ever done it a few times while on road trips on very flat, straight highway.

Like I said, my real-world mpg is more like 16 or 17, with 85% of that being on the highway with cruise control at 65.

 

[aabottom]

Doesn't changing the tire size make the odo, speedo, trip meter, mpg display, etc. all inaccurate because a larger tire is covering more distance per revolution and the computer is not calculating for that?

That is correct if you do NOT recalibrate your, speedo, trip meter, mpg display, etc. For example, if you get 18 mpg on 32 inch tires and change to 34 inch tires without recalibrating, then instead of 18 mpg your (incorrect) calculation for mileage will be:

mileage_wrong = 18*32/34 = 16.941 mpg.

Thus going to bigger tires without recalibrating your, speedo, trip meter, mpg display, etc., will make you think your mileage is dropping. You can calculate the correct mileage without recalibrating thusly:

mileage_correct = mileage_wrong * d2/d1 = 16.941*34/32 = 18 mpg.

Where d1 is the original tire diameter that the odometer is calibrated for and d2 is the new wheel diameter, and mileage_wrong is either the reading on the dashboard or calculated rom your odometer miles and gas station fill volumes.

 

[EddieV4runnin]

14.6 city
19 Highway

On 3 inch lift and 275 KO2s

 

[Kevo17]

Do 4runners get better mileage after a break in period? I'm getting 18 MPG on my second tank. Just switch to K02s, so I expect it to decrease a little.

 

[1000MPH]

Do 4runners get better mileage after a break in period? I'm getting 18 MPG on my second tank. Just switch to K02s, so I expect it to decrease a little.

Some people think so but has not been my experience.

 

[KNorm92]

Good to know about the winter gas!

I bought my 2018 TRD ORP in November with 5 miles of dealer test driving on it. The dealership I picked it up from was 600 miles south of where I live in MN. It was 70 degrees when I drove it home and I was getting 20 on hwy.

I now have just under 1,500 miles on it and temps here have been -20 to 15 for over a month - most have been sub zero the past 2 weeks. I'm now getting around 17 and have not changed how I've been driving since I bought it.

Can't wait to mod the living hell out of this by spring and never hit 20 again. I didn't buy it to save money on gas!

 

[DKFTPNYC]

I've never seen higher than 16 MPG on a tank, even before all the extra weight. My daily commute is probably 98% city (NYC city driving at that) in constant stop and go. I'll get anywhere between 12-13 mpg (all on the instrument cluster), depending on how much I use my remote start. The times I do long distance highway, I'm usually loaded up with 3 other adults plus weekend luggage and I'll get roughly high 15 MPG's on the cluster doing roughly 70-80 mph. This is with half the distance being level and the other half being up and down long stretches of hills.

 

[DeepSea]

I average 15-16 MPG with 40/60 city/highway. Was 18-20 when stock

 

[cody_hop]

I average about 16-16.5. If it's highway only I can squeeze about 17.5 out of her.

 

[BushPusher]

I am getting super bad gas mileage most of my driving is city and the temps in NH have been all over the place.
I do a 2 min. warm up in the morning and I am getting 6 Mpg yes that is 6 Mpg, So I am guessing that Eco light telling me how I am doing which is on as soon as I start rolling is lying to me .
I have only had this 2013 4Runner all stock 60 days and I can see its time to sell.
Anyone have any advise on what the problem is or what to look at

 

[e60ral]

do you have a fuel leak?

 

[BushPusher]

No leaks
The read out for Mpg on the dash is reading 5.2 Mpg ?

 

[007Tacoma]

I am getting super bad gas mileage most of my driving is city and the temps in NH have been all over the place.
I do a 2 min. warm up in the morning and I am getting 6 Mpg yes that is 6 Mpg, So I am guessing that Eco light telling me how I am doing which is on as soon as I start rolling is lying to me .
I have only had this 2013 4Runner all stock 60 days and I can see its time to sell.
Anyone have any advise on what the problem is or what to look at

Um... I've never gotten down to 6MPG even when towing a UHaul in heavy winds with a lead foot.

 

[TexasChick]

My dash reads 14.5 with less than 1,500 miles on it. 70% City, 30%Highway driving. Hoping it will get better than this. :biggrin1: