26 mpg with 35” tires!!

[bywaysnothighways]

I’ve been relying on the built in computer and my scan guage 3 to get an idea of mpg. I typically see between 22-24 on my scan guage which takes the tire difference into account vs 20-22 on the dash mpg guage. I am only ever seeing the number for that specific trip. Well I reset my meter and did a full tank and was blown away that it was actually much better than I expected. I went 360 miles on the dash which equals 392 when accounting for the tire change and used 15.063 gallons. That comes to 26 mpg! I was expecting closer to 20 because in my experience the dash gauges always seem higher than actual tank calculations.
I’m gonna do a few more tanks to make sure it wasn’t a fluke but at the moment I’m pretty happy. I’ve been wondering if the people complaining about super bad mpg aren’t calculating it correctly/have bad driving habits/ super heavy tires or all 3. I try to drive with the engine off as much as possible. I really wish I had more control over it because i know it is running more than it needs to. But overall I am pretty happy with that.

 

[kskramer]

What tire size is the LC actually reading for? I feel like the 285/70r17 that I’m running needs an adjustment for tire size as well

 

[jenos96]

I suspect it’s a combination of drag and lead foot. You have nothing on your right, not even crossbars, that’s definitely helping. Still, 26 seems high. Outlying enough that I would recommend you double check your work! What is the elevation gain/descent of the miles you drove?

 

[bywaysnothighways]

What tire size is the LC actually reading for? I feel like the 285/70r17 that I’m running needs an adjustment for tire size as well

the dash is reading as if I had the stock tires which are 31.5 for the 1958. With the tire change for me it is undercalculating by 9%

 

[bywaysnothighways]

I suspect it’s a combination of drag and lead foot. You have nothing on your right, not even crossbars, that’s definitely helping. Still, 26 seems high. Outlying enough that I would recommend you double check your work! What is the elevation gain/descent of the miles you drove?

Right nothing on the roof. I'll definitely be checking it again on the next tank to make sure there aren't any issues, like the pump clicking off too early etc. All my driving starts and ends at the same elevation (1400ft) so that isn't relevant

 

[uraniumrich]

I’ve been relying on the built in computer and my scan guage 3 to get an idea of mpg. I typically see between 22-24 on my scan guage which takes the tire difference into account vs 20-22 on the dash mpg guage. I am only ever seeing the number for that specific trip. Well I reset my meter and did a full tank and was blown away that it was actually much better than I expected. I went 360 miles on the dash which equals 392 when accounting for the tire change and used 15.063 gallons. That comes to 26 mpg! I was expecting closer to 20 because in my experience the dash gauges always seem higher than actual tank calculations.
I’m gonna do a few more tanks to make sure it wasn’t a fluke but at the moment I’m pretty happy. I’ve been wondering if the people complaining about super bad mpg aren’t calculating it correctly/have bad driving habits/ super heavy tires or all 3. I try to drive with the engine off as much as possible. I really wish I had more control over it because i know it is running more than it needs to. But overall I am pretty happy with that.

The Method 705s look great on your LC. What size are the KO3s you are running? Did you lift the truck? Can we see a shot from the front showing the poke?

 

[bywaysnothighways]

The Method 705s look great on your LC. What size are the KO3s you are running? Did you lift the truck? Can we see a shot from the front showing the poke?

They are 315/70r17 Goodyear territory MT No lift.

 

[uraniumrich]

They are 315/70r17 Goodyear territory MT No lift.
View attachment 16492View attachment 16493View attachment 16494

Great combo . I'm amazed that these fit without rubbing on a no lift truck. Do you have any issues with throwing up rocks/dirt/debris past your mudflaps and onto the side of the LC?

 

[bywaysnothighways]

Great combo . I'm amazed that these fit without rubbing on a no lift truck. Do you have any issues with throwing up rocks/dirt/debris past your mudflaps and onto the side of the LC?

Yes I do. I want either the flares that come standard on the other trims or some aftermarket wider flares and some larger mud flaps. Need about one more inch of coverage.

 

[LCOceans]

Those look great. Tire size comes up at 34.36" x 12.4" give or take depending on brand variance. So maybe this is how there is no rubbing, being under the 35 mark. Very nice looking though.

 

[Overtrail Mike]

I’ve been relying on the built in computer and my scan guage 3 to get an idea of mpg. I typically see between 22-24 on my scan guage which takes the tire difference into account vs 20-22 on the dash mpg guage. I am only ever seeing the number for that specific trip. Well I reset my meter and did a full tank and was blown away that it was actually much better than I expected. I went 360 miles on the dash which equals 392 when accounting for the tire change and used 15.063 gallons. That comes to 26 mpg! I was expecting closer to 20 because in my experience the dash gauges always seem higher than actual tank calculations.
I’m gonna do a few more tanks to make sure it wasn’t a fluke but at the moment I’m pretty happy. I’ve been wondering if the people complaining about super bad mpg aren’t calculating it correctly/have bad driving habits/ super heavy tires or all 3. I try to drive with the engine off as much as possible. I really wish I had more control over it because i know it is running more than it needs to. But overall I am pretty happy with that.

The gas mileage you’re getting is hard to evaluate when you don’t provide all the information associated with it. Data such as temperate, wind, speed and direction, city stop and go driving, highway driving, average speed, tire pressure, tire type and weight all affect mpg. Adding a roof rack changes mpg by about 2 mphg

Provide a little background info when you provide info please.

 

[DoMoCruiser24]

I think the main issue with the focus on MPG for this vehicle is the association of Hybrid with efficiency ala Prius.

That is further compounded by the stated MPG which can be achieved but I assume many may be unfamiliar with turbos and how it directly impacts fuel consumption.

To over simplify, turbo actuation will deliver more power but increase cylinder temps and pressure (which can result in knocking), therefore computer is tuned to have the engine run rich for cylinder cooling to reduce knock.

I don’t know the exact pressure of the T24AFTS turbo but since it is a 2.4L 4 cylinder turbo engine it should be comparable to others on the market so between 13-15 or so. At max effort without turbo use, you will get approximately stated MPG or 1x fuel consumption, with 7 psi turbo, that’s half of 14 so now you’re at 1.5x fuel consumption. At 15 psi, 2x fuel consumption. Again this is an oversimplification.

TLDR Boost gauge is very useful tool in my opinion. If gas mileage is very meaningful to you, monitor the boost gauge and drive without turbo activation and that should get you to stated MPG.

 

[jenos96]

I think the main issue with the focus on MPG for this vehicle is the association of Hybrid with efficiency ala Prius.

That is further compounded by the stated MPG which can be achieved but I assume many may be unfamiliar with turbos and how it directly impacts fuel consumption.

To over simplify, turbo actuation will deliver more power but increase cylinder temps and pressure (which can result in knocking), therefore computer is tuned to have the engine run rich for cylinder cooling to reduce knock.

I don’t know the exact pressure of the T24AFTS turbo but since it is a 2.4L 4 cylinder turbo engine it should be comparable to others on the market so between 13-15 or so. At max effort without turbo use, you will get approximately stated MPG or 1x fuel consumption, with 7 psi turbo, that’s half of 14 so now you’re at 1.5x fuel consumption. At 15 psi, 2x fuel consumption. Again this is an oversimplification.

TLDR Boost gauge is very useful tool in my opinion. If gas mileage is very meaningful to you, monitor the boost gauge and drive without turbo activation and that should get you to stated MPG.

Be nice if eco mode actually inhibited boost unless significant pressure on the gas pedal or something. I dunno maybe it’s a safety thing

 

[JSFoster75]

In my experience with multiple Toyota vehicles, the onboard computer guesstimated MPG is never accurate... I rely on the old fashion method using the Fuelly App, cost is $7.99/year and totally worth every penny plus some.