Owning an older motorhome, like our 2006 Jayco Greyhawk, means more money spent on maintenance. As someone else mentioned, after 10 years the costs do start to climb. In the past couple of years we have replaced all the hoses and belts on the engine as well as installed new tires (the 3rd set, 2nd replacement). In the past year we have replaced the roof A/C and the refrigerator. All in all, we've spent just shy of $5,000 on the motorhome in the past 18 months.
There will be additional costs over the next few years but we don't expect to spend nearly as much as we have in the recent past. And of course, this money spent is small in comparison to the cost of a new motorhome!