Poor Fuel MPG

Just drove to Houston to see kids from Miami. 1,200+ mile trip averaging 17.4 mpg. Granted it only saw below 85 mph when pulling in to Buc-ees to refuel.

 

Wow, these are 2.5 gen numbers. Color me surprised for sure. I see the new gen’s on the road quite a bit and imagine they are loving their 22 mpg, but what a terrible assumption!

 

You're getting 5-6 more mpg than me.

 

You have a 1/2 ton pickup with over 400hp. 15.6 mpg is amazing.

 

Just over 2000 miles and I get about 17 around town and 22 on freeway so just about what the EPA estimates. I drive the speed limit and use cruise control regularly. Mine is an SR (so no air dam or grill shutters & the slightly detuned motor), crewmax, shortbed, 4x4. I have stock Land Cruiser First Edition wheels/tires which are identical spec to factory 18” Tundra TRD off-road wheels/tires.

 

Never have had a huge issue with mpg bc I understand it’s a 6k lb truck with the aerodynamics of a barn, but I’ve been looking into my gas mileage recently just out of curiosity.

I was previously getting about 15 mpg on my commute which is 50/50 city highway. 35” e load tires on +0 offset wheels, full skid plate, leveled. I experimented with driving under 80 (I often forget that the speedo is off, so I’d have the speedo at 80). Started driving under 75 (speedo, so real speed is ~80) and started getting ~16.5. Then I’ve been playing around with keeping the speedo under 70-72 and now I’m around 17mpg consistently. Been using ECO the whole time. ECO is pretty bad compared to normal for city driving, but it definitely gets better gas mileage on the highway. I’ve also noticed negligible difference in mpg after getting rid of the air dam. I’m assuming that has a bigger difference the closer your truck is to the ground. I’m sure I could get better mileage with more + offset wheels, but it’s not worth buying a new set just for that. I’d rather spend that money on more trips!