14-15 MPG's

I get 19-19.5 city/highway with stock wheels

 

You're going to get wildly different answers on this.

Some guys see zero MPG improvement, some guys see some increase.

At the end of the day, I wouldn't buy a tonneau expecting to get better MPGs. If it happens, then awesome, but it can't be relied on to deliver better MPGs, b/c it may not.

 

19.7 over the life of the vehicle.
Stock V6 4x4.

 

Accelerate Slower. Drive slower. Decelerate slower.

 

Yes I'll sell you mine. Please take it away.

 

I totally lied. I have 4100 miles on the truck.

 

80% of my driving is at highway speeds over 70 mph so in my situation the tonneau cover helps with mileage by maybe 1 or 2 mpg. Around town driving I would say no help at all.

 

Same as you my man. Best I have ever gotten ever was 18mpg I usually am 15mpg city, and I dont drive aggressively.

 

Tonneau covers dont increase MPG. Dont listen to the dudes that say it does, it doesnt.

 

I saw virtually no change with a hard tonneau. Some say the weight offsets any aero improvement.

 

Yeah you're right it's a conspiracy....

 

I average 17.7 best was 19.5

 

They don't.

 

Buy a fucking Prius if you want better gas mileage! Hi Lux diesel would be sweet!

 

PISS!
Still no better and I swear that I've been keeping my RPM's almost always under 2K.

averaging 14.6MPG.

PISS!

 

16.8 could be a lot higher but when it's wet out I enjoy turning off the traction control

 

rpms under 2000, tires, lift and armor, I get ~15 in city and 17-18 on highway, if 55-65 mph, at speeds higher than 65 highway typically get ~14.
I also found that it does best when I use 89, extensive testing with 87, 89, and 91 octane, 89 is the ticket to the best mpg in my rig

 

I usually get and average of 15 to 16 city and 19 highway. The worst fuel consumption listed includes half a tank pulling a 3.5k travel trailer about 60 miles.

 

Brand new DCLB SR5 V6 4x4 I averaged around 19mpg overall. Most of my driving is 55-70mph on state road to and from work. Not too many stop lights.

Over time my MPG's have reduced as I've modded the truck. Tires. Skid Plates. Wider wheels. I switched out the 7" factory width rims for 8" Methods about the same time winter hit. That swap over plus the cold air did a number on my MPG's. I'm now seeing. 16-17MPGs.

With plate bumpers coming in a couple months or so I'm sure that'll get worse.

However, my snow wheeling trip on Sunday gave me a 16.7MPG average including my highway miles and running around on icy trails in 4x4 Lo most of the time. So I can't complain too much there!

 

I'm at 14.6 right now, so says my ultra gauge. I did the calibration as well for distance. Lift, 285's, throttle body spacer, and an AFE stage 2. Just ordered a MAF calibrator for max potential.

I drive 60/40 freeway/town.