I own a Volt, a 2017. Bought it used with 19,500 on the clock at "I stole it" price, currently just a tick over 50,000. Here's my take on it:

* Summer range: about 60 miles EV only. Winter range: about 48 miles EV only.
* Fuel mileage on "Hold" (engine only): 44 mpg average, with A/C on at typical Interstate speeds
* Issues to date: one set of tires at 45,000 miles, hood and roof painted surfaces are "crazing".
* My 6'3, 290lb backside fits just fine.
* For my everyday use (15 miles to work, 15 miles from work and one extra stop in town), I don't use the engine.
* Longest I've gone without refueling the car is 7 months.

We bought the Volt to replace the prior "economy car" in our fleet, a 2012 Chevrolet Cruze Eco 6-spd. That car was a headache and a money suck. So far, besides the tires, the only things I've paid for with the Volt are the tags, the fuel and the car washes.