Crazy Gas Mileage

Hey y'all,

Last night I took my 2021 Tundra Limited TRD OR to my folks' house, about 75 miles each way right through Chicago. When I pulled into my garage I was greeted with what I believe is the best gas mileage of any vehicle I have ever owned, over 19mpg. I was not trying for fuel economy at all, going from 0-65-0 multiple times during the drive due to Chicago traffic (conservatively, of course, as the truck is still breaking in), and only on the highway for like 10 miles total. How could this be?! What's the best mileage you've seen on your Tundra?

 

Change that 9 to a 3 and you will have what most of us average.

 

truck does well on the highway. Just came back from a trip to Tennessee from Chicago and averaged 18 mpg.

 

With P rated stockers they get pretty decent mileage if you're generally easy on the go pedal.
Alot of us are running lifts and 33-35" lt tires. That extra diameter and rolling weight add up

 

19.9 100% highway @ 75 MPH with cruise on.

 

16.7 average for my first three fill-ups, 18.4 on a highway trip through the White Mountains, I'm sure if it was flat and not uphill I'd have done better.

 

This is the nicest mine has ever been.

 

Just yesterday, half of it was coming down a mountain.

 

Lol y'all are too much. I have 34's and a 3" Front 1" rear lift. I get 10.5 on a good day, usually average 8.5 to 9 mpg. 13 mpg highway

 

I remember those days... stock truck, first few tanks of gas, easy going.
Unfortunately those days were short-lived.

 

My best

 

19MPG Drop off Ms. Daisy and drive that truck

 

Best I ever did was about 17.5 of steady 70 mph on the PA turnpike on a pretty level section of road

 

7-8 mpg pulling a 7000 lb travel trailer at 70 mph passing trucks and loving life from Kentucky to California. Feels a lot better when I'm not paying California gas prices though.

 

To much of this and 285’s for 19...

 

I don’t trust the dash readout at all. The only way is to hand calculate. If I’m on the highway mostly, I’ll get 15-16. If I idle a bunch and am about town, I’ll get 12-13. Great trucks, though. Enjoy!

 

I also never trust the dash readout, I always hand calculated, but now I use fuelly

 

My hand calculations show that I'm always right around 18 mpg in mostly highway driving.

Also,

 

I got 19 on highway trips when I had stock tires and really watched my driving, being smooth, light throttle.

 

I drive a lot of long country roads and highways, my 4.6 would get 18 on stock tires. After getting my 34's and 3" lift i was getting 15.5. Just changed my spark plugs recently and now getting 16.5 regularly.

 

I had a hand calculated tank at 23 MPG over about 200 miles. Perfect weather conditions and flat highway cruising 65. Pretty sure that won’t happen again. Just did a 600 mile trip and averaged 17.6 MPG cruising 65 with a strong head wind for about 150 miles and a lot of elevation changes. Truck is great stock, unfortunately I need LT tires so when that happens I’m expecting 14-15 with 275/70r18.

 

Lifted and armored up getting about 11, when my tires get replaced, probably be at 9.5 avg. Which really isn't bad for a loaded armored bus topping hills at 85 or so. Smiles per gallon