I recently purchased a new Ridgeline as of December 2019, it has rougly 3,000 on the clock. In early December I noticed that when accerating from a stop in first gear it made a rather unusual noise, but I just attributed it to my imagination. Honestly it was probably nothing. As of a few days ago I'm now hearing a much worse sound with the same rhythm happening in the same circumstances as the first sound. (Only in first gear or a speed under 10mph) I probably noticed it more now that it's warmer outside and I have the windows down. It's pretty loud when I drive up my driveway and the sound reverberates off of my house. Not very loud otherwise but you can still hear it. Recorded a video and took it to my dealer, the service writer agreed that something was "definitely wrong" from watching the video. Short story long, they couldn't find anything, they even kept it overnight and tried again the next day (They also tried driving it close to a building so the sound reverberation would be higher like I described.) Nothing. Edit: I should probably clarify that they didn't even hear the noise. So either it's an intermittent problem or their ears weren't trained to hear that sound over the normal sounds a truck makes. So now I'm sitting here wondering if I should just let it go or if I should be more persistent. If someone could watch this video and tell me what they think that would be great. This is the first new vehicle I have ever purchased so I don't really know if chasing after small hiccups is something worthwhile. I would expect a new vehicle to be well, new, and free of issues, but I realize this isn't a perfect world. On a side note, whoever drove my truck scuffed up the black trim on the driver side door. Guess I have to live with it now. I'm a detailer for a living, so I notice everything. A small piece of debris was obviously painted over on the roof of my truck. I can live with things I can't control, but I feel like I can control this. On the bright side, I have a full service sheet saved in case this problem rears it's head post warranty. Thanks, I apologize for sounding whiny.