"when my cell phone works perfectly fine and always has the latest maps for free." *
* free except for the cost of the data plan to download them.
I totally understand. I spent $300 a couple of years ago to put a 2 DIN android based stereo into my Jeep (which I'm now replacing with a used LEAF) I will miss some things about the android head unit. Mainly, the option of Google Maps when I connect it to the WiFi from my phone, and the much better support for audio files and display of cover art, built-in Audible audio book player, built-in Podcast Addict .... but I can mount my cell phone and connect it to the car stereo by bluetooth to get all that.
Adding a cell phone mount, or mounting a small android tablet on the dash above the existing stereo (ala 3rd party GPS) is probably the best bet. or, if the info you are after can be read by an app like LeafSpy You could probably replace it altogether with an android or android auto stereo.
You wouldn't have any way to input settings to the charging timer or HVAC timer if you change the stereo, but maybe those are not features you care about.
2012 Nissan LEAF SL (purchased used June 2017)
2014 Chevy Volt (purchased new Feb 2014)
2x L2 Clipper Creek EVSEs