For those of you with a pond in your new Odyssey, I felt your pain and discounted how minuscule the chance might be that my own EX-L might have water coming in from somewhere due to a quality issue. Then one day about two weeks ago, I decided to do my sound attenuating regimen on my new Odyssey so I could get the most out of my sound system upgrades and have a near silent ride when I just want to ponder Life and the Universe.
Oh what a tragic discovery when I pulled the whole carpet insert in the back portion of the EXL. The whole area under the extruded foam backing of the cargo and seat stowing basin was soaked with nasty water from where a hole was left in the seam of the stamped steel cargo hold floor piece and the frame cross member that supports the bolted rear folding seats. The seam sealant is applied on the straight runs by a machine. But in the corners where the person on the assembly line applies the seam sealant in the corners, he/she left a 1/2" open in the seam and water and road grime saturated the carpet foam backing and the floor pan in the trunk.
I'm going to try and post photos. For those of you that don't think you have this issue.....if you don't check this out the whole rear will smell like P wine by the time you figure it out. But Honda will NEVER make it right at that point.