Haven't looked at the 2018's personally, but from reports here and elsewhere on the interwebs, the quality and reliability seems to be at least questionable.
Although I have the first year 9th gen I don't see as many INITIAL problems with that MY as I have seen posted here and elsewhere for the later year 9th gens. Not intimating the 2013 is problem free by NO means, but since I'm in tune (read psychologically triggered by 2013 complaints) and looking for 2013 problems, I find more 2014+ MY glitches, problems, quality complaints. Stuff you'd think would have been ironed out in subsequent MY after the 9th gen premiered.
Honda doesn't have the excuse, as they used when the tsunami hit Japan, as to why some of the quality is lower then previous years (remember the Civic junk? Dash material that scratched from day 1). Their excuse back then was they were using second vendor suppliers and NOT first vendor suppliers. They rushed it with crap suppliers.
Can't use that excuse legitimately now.
It's been stated before and repeated enough times, the car makers don't see as much profit in sedans anymore. All the profitable models are trucks, SUV's and CUV's.
Guess what !? Honda's no different.
Pilot, Ridgeline, CRV, HRV the writing is on the walls that the sedan/coupe is not a major player in the bean counters eyes. I get it, they are in business to make money.
Trucks in general, SUV's, CUV's = big profits Family sedans = little profits.
In my career I've seen the problem first-hand. Initial release of a product uses great materials, great engineering, great support. But watch out in subsequent years of a products life.
The only mantra is reduce cost, reduce cost, reduce cost. In that order. Sometimes quality isn't affected but most times it is palpable as to the quality failing to keep up to standards.
Lamentably this is everyone in every industry it seems today.
Anyway, my opinion regarding Honda is mine. Hopefully I am proven wrong and quality improves as well as reliability (2 CVT self destructing trans within weeks of release. Yikes!).