I was very interested in the RDX, and followed it closely through the redesign. I did a lot of homework, followed by test drives of new high-end models in late 2019. I liked it. However, with my prior homework, I tested & observed that some features did not work, such as Heads-Up-Display, which could not be fixed after repeated attempts by the knowledgeable salesman. This was interesting, because this matched complaints found on-line for over a year. Since my testers were just delivered & passed dealer prep, I found this significant. In my case, I found on-line comments to be accurate - that some configurations / packages have issues that are not thoroughly sorted-out. Software is blamed, but after reading that some customers have waited over a year for software updates, with no estimate of an effective fix, then I lost interest. Acura publicly blamed S/W ver 1.0, and said that S/W ver 2.0 fixed most things, but that was doubtful to me since v2.0 had been released for over 6 months.
To be clear, I was NOT evaluating the RDX in the first year after the redesign.
I do not know the details, but I found that all reliability reviews give Acura only an average-at-best score.
Also note from various sources, including comments on this site, that Honda reliability is not what it used to be. As an owner of 5 reliable Hondas since 2000, I find this disturbing.