I hope this post can be helpful to someone that may be going through the same frustration I have been for the past 2 weeks. I realize I could have just taken the car to the dealer (and was about to) but I prefer to fix small issues on my own if possible.
There was a very noticeable rattle/creaking coming from the driver's side dash behind the gauge cluster and just in front of the windshield near the A pillar. The noise only happened when the vehicle was in motion and was most noticeable over rough surfaces. The best way I can describe the noise is that it sounded as if the windshield was loose and rattling/creaking slightly.
I immediately assumed the noise was coming from inside the cabin and begin checking all panels around the dash. After several hours of pushing and pulling on every removable/moveable part in the vehicle, I came to the conclusion that the noise was being generated in the frunk area of the vehicle and traveled into the cabin.
Lesson #1: Cabin acoustics really are a bitch, so don't assume where you hear the noise is the same place it is originating from...
After poring over the various threads in on the boards, I concluded one of the following must be the issue:
1. Gas/Fuel Tank Mounting Pads - Apparently these move out of place and cause a noise similar to what I was experiencing that sounds as if it is coming from behind the driver's side dash.
2. Plastic Cover in Frunk - The plastic cover has reported to vibrate and cause a similar noise as described.
3. Suspension Mounts - These dry out and/or become worn and will cause a similar noise as described.
The first thing I recommend doing is removing the plastic cover in the frunk and driving the vehicle without it. If the noise goes away, the cover is most likely the culprit and some felt tape in the right places will solve the issue. Unfortunately, this was not the cause of my issue.
The second step I took was to monitor the noise with various levels of fuel in the gas tank. The noise was not different from near empty to full. It is reported that the gas tank pad issue will be louder on a full tank. While this isn't a foolproof method of diagnosing this specific issue, it was enough for me to move onto the suspension mounts.
I decided to check the suspension mount on the driver's side but lifting the vehicle off the ground and allowing the driver's side wheel to extended fulling for one hour. I then lowered the vehicle and immediately began driving it before the suspension had a chance to settle. The noise was gone...
^ The noise remain absent for the next 24 hours. The following day, it came back. Very faint at first and progressively got back to full volume. This definitely lead me to believe the noise was suspension related.
I took some rubber silicon lubricant and sprayed the top suspension mount. I allowed this to soak for several hours and drove the car again. The noise is gone.
^ This seems to have solved the issue as it has not returned for several days. I do plan to make an appointment with the dealer and have them check the mounts and see if they should be replaced.
I hope this helps anyone else with the same or similar issue get to the bottom of the cause. Noises like this can really take away from the enjoyment of such an amazing vehicle and I'm glad this one is behind me. At least for now