What Gen is that ? Or year ? Looks like the drive from pre 2008- 2009?
Like all things, the maintenance or up keep might have been garbage. I suspect like most big brands that has an issue like this, probably has everything to do with improper maintenance, probably not much to do with the “engineering’ of the original product.
It was a “rental” that is probably a fleet machine they might have bought from auction. Never know. (Not the best looked after or taken care of, same could be said for any brand machine if it’s not looked after or taken care of properly)
Sorry about your bad luck with this rental, that’s a real drag on your ride you wanted to enjoy.
For fun- go to the dealer and test ride a new one that might be 13-15 years newer. I think your report would be quite different in your assessment. The new ones are really awesome.