Plug-in hybrid vehicles have enough power to cover 100% of my daily commute. Driving on electricity alone and not having to run the gasoline engine greatly appeals to me, but I also understand that the engine should be used from time-to-time to ensure its longevity.
The answers to these questions sufficiently explain how to keep a rarely used gasoline engine in working order, but the answers, except in the first question listed, are a few years old and with regard to regular cars.
Is it okay to leave a car outside in the winter without driving it for 1 month?
Is it okay to leave a car for 5 months without driving it?
How to maintain a sometimes-used vehicle?
How long does it take for gas to go bad?
(In summary, the answers say that the gas should have a stabilizer added if it will be sitting for more than 6 months, and that the engine should be run for at moderate amount of time every couple of weeks to burn off the condensation.)
What I'm wondering is, do these same principles apply to plug-in hybrids? In other words, is there a difference between maintaining an unused gasoline engine on a plug-in hybrid driven daily, and a standard vehicle not driven at all?
I hope there is an answer that is generic to most vehicles, but calling out a specific make and model is fine. Examples include the Chevy Volt, Hyundai Ioniq, and Toyota Prius Prime.