Unlike the auto industry, RV's don't share the same quality control. You can get a lemon among other trailers on the same line that will have
few issues. I owned a Keystone Cougar 5h wh, '09, that had a few minor problems; sewer handle unglued itself, front jack became unbolted, the blow up mattress in the coach was garbage, but that was it. Structurally, they all share the same basic technology subject to human error.