I guess this would be the correct thread to post on this. My 2020 had been rattling on startup and while driving for awhile, I looked at the flex couplings and the passenger side had broken, I think it was partly due to the hose clamp put on to stop the rattling. I took it to an exhaust shop, they put a woven flex coupling on and informed me my Drivers side Cat was starting to crack. I looked at it when I got home and sure enough it is cracked at the top side flange weld. Scheduled replacement with the dealership, no big deal…. This was 2 weeks ago…. This past Saturday I changed the oil and noticed the drivers side Cat mounting bracket weld has broken off and rattles like crazy, I looked all over the passenger side and looks solid. I dropped it off today to have the cat and the intermediate pipes replaced, received a call from dealer that drivers side is all done but have to replace the passenger side Cat due to a crack and will be completed tomorrow. Thank god for warranty! Pics are attached if anyone needs a visual reference on where cracks could be occurring. The pics are only of the drivers side cat, top flange weld crack and the lower mounting bracket.
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