Agree about the vehicle shaking badly at highway speeds, and the fact that Mercedes can't do much beyond trying to balance the flawed wheels. Helped a bit, but the wheels are not Mercedes-Benz, so discuss with Thor.
Air-conditioning doesn't work on generator power.
Only when plugged into shore power. Waiting for warranty to replace the AC unit in hopes of a resolution.
All plumbing fittings should be examined and add plumbers tape onto the threads to fix the leaks.
This is not an all inclusive list of issues, but they are my major concerns which haven't been remedied since August 2021 purchase of my 2022 19P