Fridges, roof A/C units, furnaces, water heaters, RV generators, fresh water pumps, dash A/C units, converter/chargers and house batteries that are over ten years old may need repairs or replacement now or later. So, if you buy a 5 year old rig, and are lucky, you may not need repairs or replacements for some time. Our 2004 Tioga has had major items replaced, ask to see paperwork. Set aside some bucks for repairs/replacements as needed. The drive train may not need major repairs but good to have a pro truck mechanic check it over. I am not a fan of short class C's, need a rear bedroom with RV queen bed.