While we have had our Mule 20 years, it only has 900 miles on it, and has been used pretty lightly. Other than having one of the intake boots work loose, it has always worked well (other than replacing the battery every few years).
I just brought it out of storage to enjoy with my 6 & 7-year old kids, so we have been cleaning it up and restoring it a bit. I have a vinyl cutter, so I've been making fresh Kawasaki and Mule logos. Enjoying it once again!