sorry it took so long Kaz. anyhow you provided good intel here, WTG!
This is the new reality in automotive, old days of adjusting carb. bad suspensions, oil leaks, defective brakes, and a wandering dwell point over. we still have ground electrical issues, and the new Computer software/ sensor stuff takes the stage. EFI not new, so, i suggest if your unhappy with your dealer under warranty, call Fountain valley Calif. 1-800-633-5151, that's customer care, closest i can find to the old regionals in USA., i used GM regional back in 2002 (tappets noise), got a new engine..lol. 2001 buick century, it was my mother in laws new car.!!!
i got 6600 mi. on my 2019 kona, KNOCK ON WOOD, np's. paint sucks , my first glaze buff coming this summer. i' m using mobil 1, get cabin air cleaners at "rock auto", ( 1 a year) and once a year injector cleaner, and looking forward to real good tires. original kinergys suck. all in all the rigidity of the suspension reminds me of a BMW 3 1996, and the lightness of the suspension components amazes me to get that!!