It was initially leaking in several locations. I've used an entire tube of black RTV silicon sealant and I've stopped most of the leaking that comes from along the front edge and the sides. I also sealed around some of the hardware penetrations near the top front (where the hardware bolts...
The Mav is actually 3.9 inches shorter than my 2011 Ranger w/ extended cab. It might be longer than the Ranger short cab version though (I haven't checked).
Overall exterior dimensions are pretty close to my 2011 Ranger extended cab 4x4, which has a wheelbase of 125.9 inches whereas the Mav is 121.1 inches. Ranger width 71.3 inches vs Mav 72.6 inches. Ranger length 203.6 inches vs Mav 199.7 inches.
So basically the Mav is slightly wider by 1.3...
Running 87 octane in my 2023 Ecoboost with AWD and 4k running in Eco mode, I typically get 31-32 mpg highway. I've seen as high as 33.1 mpg. Average is around 24-25 around town. I almost always use Eco mode.
Towing is a different story. Empty trailer (open utility trailer) I get about 21...
The BakFlip MX4 tri-fold leaks horribly. I've mitigated it some with nearly a whole tube of RTV black silicon sealant, but it still leaks in the middle around the hinge points of the fold.
If you can find one that goes over the bed sides instead of being flush with the bed sides you might...