Not always. According to lemon law lawyer Mr. Lehto (who runs a Youtube channel Lehto's Law), RVs are not covered under most state lemon laws, and thus defers to the federal Magnuson Moss Warranty Act which just says repairs must be under a reasonable time frame, and the RV companies say something like 10 repairs, 6 months each, is the industry standard and thus reasonable, and judges don't have anything else to base that on, so they agree.