Low buzzing on driver side when accellerating

[njlinger]

Hi folks. I have have a 2024 non-turbo CX5 with 11k miles. The weather was colder for the first time this year (20-40F) and I hadn't driven the car in about 5 days. I now occasionally hear a low pitched rumbling/buzzing sound coming from behind the lower left driver side floor board when I accelerate. Probably about under where the front and back doors on the driver side meet, at the bottom of the car. I vibrates about 20-30% of the time when I accelerate.

I'm attaching a voice clip with the sound. Anyone know what this is?

Thanks!