Getting back to what you want, an SUV - I am surprised no one has mentioned the Toyota Highlander hybrid or commented on that you are interested in the RAV 4 hybrid (which is not a plugin).
The RAV 4 overall has extremely good reliablity. Even Consumer Reports says the last five years (2013-2017) with two redesigns in 2013 and 2017 have been very reliable. A few complain about in-car electronics (the screen) but that is very minor. Sticking with that will suit you well.
The Highlander is even better reliablity from 2012-2017, but the redesign year of 2014 has some power equipment issues and in car electronics issues.
These are not plug-ins, but they are hybrids and will suit you better even on the highway (which they are not as good a diesels as mentioned but they are pretty good).
Not really impressed with anything Mitsubishi does these days as Lectrofuel stated.
If you are bent on a plug in, you don't have many choices. You have Tesla (and the wait forever for a Model 3), you have Chevy's Bolt and Volt, the Kia Niro, and you have the Toyota Prime as mentioned.
Of those, you are not getting a Tesla because it is going to take forever to get an affordable Model 3 that is less than $50,000.
The Kia Niro is very reliable - but it has only been out one year. In Consmer Reports, it ges a perfect score on everything. So it is reliable - but Lectofuel's comment on space is true.
The Toyota Prime is a solid choice that has more space than the Niro. Power equpment has been a trouble spot in the first year of production. Otherwise, a solid car. The infotainment system when I tried it out looking for a new car recently was problematic (Consumer Reports testing shows the same thing) as it is not easy to use. You probably want to test one before you seriously consider it.
The Chevy Bolt is pretty reliable out the gate (1 year of production so far also). It has a good range for battery only and its only issues have been the infortainment system for some users. There is no gas engine in it so that may be a show-stopper for you.
The Chevy Volt is another option. The redesign year of 2016 should be avoided as it has mutliple issues. However, running changes (using six sigma) GM fixed it for the most part and 2017 is much better. In car electronics are still an issue but pretty much everything else (engine issues) were fixed. After the first year many GM cars are fine now. Not quite as good as Toyota,, but pretty solid in many cases - this is one of them.
Best of luck.