Are you hand calculating that or using the display?
Over what period of time/distance? How many fillups?

 

Manual calculation over a 500-600 mile span.

 

Try doing ten fillups and about 5000 miles. That will probably get you a better average miles per gallon. Takes all driving conditions into account. Sitting in heavy traffic or moving forward in traffic jams at 4-10 miles per hour is terrible for gas mileage.

 

The local Toyota Dealership brought one of those tundra v6 hybrids to my HS's auto shop, and they said that with the slightly oversize 10 ply tires, he typically saw 15 mpg.

Based solely on the fact I'm driving a 20 year old diesel(with an aftermarket turbo and a custom tune) with a lift and oversize tires, that can easily tow more then that tundra, and it averages 14 mpg, I'm not at all impressed with the Tundra.

 

@DMTCajun
Ok, are the replacement tires larger in diameter than the originals?

 

The original tires were 265/60R20's. Will the original tires it only got maybe 14 in the city.

 

Well, you went wider and higher aspect ration which means more circumference.
Your truck is registering fewer miles than you are actually driving. That should explain part of it.
I don't know about the rest.....
Terrible mileage indeed.

 

thanks

 

The new Tundra FYI, is more about delivering power gains rather then MPG unfortunately. The hybrid system is different from say a traditional Prius/Sienna system which is geared towards efficiency.

 

The biggest single variable with the mpg you actually achieve will have to do with how long is each trip, i.e. how much of the time is spent driving on a cold engine. Short trips kill mpg.

Hilly terrain, windy conditions and highway speed are also big factors with trucks, because they are heavy and are not aerodynamic. MPG drops sharply over 70mph.

Tire pressure and tread style count for something, as does any degree of lift.

In the city, accelerating strongly then nearly coasting to the next light may help mpg, versus using constant acceleration.
Anything to require less use of the brakes.

 

🙃whoa!

 

At least your new Tundra is running.
Guy at work has a new tundra....twin turbo V6 engine. Guess what?........havent seen the truck since he bought it. Thing lives in the repair shop. It is a fact that they are having engine problems.
He drives a Honda accord to work for past month at least.
Another co-worker with a 2018 tundra with the I-force V8....well that runs great.
I guess "new" isn't "Better"....now is it? 🤣

 

Based on what? One truck? Internet baloney inflates stuff. I'll bet the failure rate is below 1%.

 

For some reason their NA suppliers for the 3.5 and fit and finish on the tundra/sequoia twins are not great. Alot of teething issues, that seem to need at least a MY to fix (based on the tundra).

On the other hand their JP suppliers for the LC300/LX301 programs seem to be fine all around. That being said the LX fit and finish on a demo model seemed out of character (squeaks and noises).

 

I went to Fuelly.com (that's what I use to record the mileage on my Tacoma), and not many vehicles there. I searched based on the V6 mild hybrid, and just five users:

Toyota Tundra MPG - Actual MPG from 5 Toyota Tundra owners (fuelly.com)

There's also "V6 ELECTRIC/GAS", and just three users there:

Toyota Tundra MPG - Actual MPG from 3 Toyota Tundra owners (fuelly.com)

 

I am about 13k miles in and purchased my 2022 brand spankers. I am getting 17 mpg city. and 25-26 Highway. SR5 Premium all stock here.

 

I used to get those figures figures with a 2019 highlander 3.5V6 with 8speed.
Throw in the larger silhouette and extra weight of the tundra, plus the twin turbo setup and subsequent power output. Then those figures are impressive.

 

DMT you need to recalculate our miles driven to get the true MPG for your vehicle.

Since circumference is 3.1416X diameter you need to measure the difference between your original and replacement tires.

Example (hypothetical)
Original tires are 30 inches outside diameter
30X3.1416=94.248 inches, just shy of 8 feet per revolution of the tire
New tires are 36 inches in diameter
36X3.1416=113.0 inches, 9 feet 5 inches per revolution

That represents a 20% increase in distance traveled as well as 20% more MPG than your instruments are recording.

Basically at 60 MPG INDICATED you are actually moving at 72 MPH!!!!!!!!!!!!

Since the 3.1416 is the same the difference is the diameter of new versus old tires.

30X1.2=36

So you are travelling 120 miles versus 100 miles indicated.

Your warranty will expire at the indicated MPG? Nope, you have travelled 20% further.
You will be ticketed for 72 in a 60 zone when your speedometer reads 60 MPH.

ASSuming your new tires matched this GUESS your 12.77 MPG will actually be 12.77X1.2=15.324 MPG

 

The posts on the new V6 twin turbo Tundra's seem to indicate a lot of problems. I own a 2006 base model V6 Tundra and a 2005 V8 Tundra Limited 4dr. Both 2WDR. Both have been great trucks. Really would like to get a 1794 with a lot of extras. Now, not so sure?

 

Oddly, it sounds like the non-hybrid motors are having more issues than the hybrids. I'm not aware of any differences between the gas engines of the hybrid and non-hybrid, so either there's an issue on the assembly line (maybe they're being made on two different lines?) or there's a difference in the way the engines are being stressed based on whether it's a hybrid or not.

I've heard they're having crank bearing problems. Not good.