Jimny GLX 2022 -Question

Hi guys,
My Jimny's rear wheel well, seem to be incomplete (i.e., the wheel well does not meet the bottom of the rear bumper, and the rear bumper seems to be an air scoop - adding significant resistance on the interstate, or wherever traffic movement is done in the 50-70mph.
-Is it as it should be? (talked to my garage, and they said it was intentional, to enable easy access for debris and mud removal, which seems like an excuse more than the right answer).

-Any help in understanding if this is the way it's designed, and if there are solutions to it - are welcome.

How have you measured the air resistance to know that it is causing the issue you are claiming?

Quit simply, it has to do with common sense, and some aerodynamics.
During forward motion, the air in the wheel wells flows backwards.
Specifically between the tires and wheel well.
Under negligible wind conditions, and inside the range of 50-70 MPh, the flow is in the turbulent regime (not laminar nor chaotic).
Under these conditions any scoop shape, that's opening up to the incoming air will create significant drag and also disrupt the air flow to create chaotic flow, which affects the overall drag of any moving object in a significant way.
The simplest way to get some data in relation to what I described, is reading up on air intake design for the early jets.
-Although the speed range is not the same, the air foil and overall design in of an aircraft is not the same too.
-So, it only demonstrates the drag effect of scoops which intake air, not a linear parallel - but extensively studied.

To illustrate, I attached a photo of the forward facing cavity, of which I'm referring to. This photo was taken front to back direction, obviousle outside the wheel well looking in.

In my opinion, it screams drag.
 

I understand what you are saying, but every item in front of the "bumper Scoop" is impacting the way the air travels over the bodywork.
So without wind tunnel results it's difficult to say what impact the "scoop" design has on overall performance and drag.
IT could be like a deployed parachute, then again it could be almost nothing.
The Jimny itself is a square brick, not one of the better aerodynamic shapes. So overall even if "bumper Scoop" is contributing, which we don't know, the overall brick shape is the big issue. Both frontal area and the air turbulence generated by its "square butt" as the air departs the bodywork, I suspect as turbulent as it can get.
It's not the best vehicle to worry about aerodynamics.  Just enjoy it.

 

My Gen3 looks very similar so I suspect something isn't missing and that is how it is meant to be.

I disagree with the comment about making better access, mine just collects muds on the bottom of that cavity.

Most cars are not very aerodynamic, some better than others, but the Jimny is more like a van than a car, a brick on wheels, so I doubt that this cavity is making any difference to the overall wind resistance of the vehicle.

While I accept the premise of any improvement is better than nothing I wonder that a Jimny is really a suitable candidate for worrying about an odd percent improvement here and there. It might be a useful conversation on an endurance racer or F1 but honestly a Jimny has bigger problems with its aerodynamics.