The Wall Street Journal: Toyota Prius Prime: America's Most Popular Hybrid Lacks Energy. http://google.com/newsstand/s/CBIwtZqStjM
Strange: he (or she, though I suspect he, from the tone) is speaking in the first person, but doesn't "sign it". New Wall Street Journal policy? It doesn't feel like serious journalism: "bad acid styling", "Samsonite-sized battery tucked in its bum", and on-and-on. I don't agree with your title, can't see potential Prime customers being swayed by it. This is lightweight fluff journalism, someone completely "mailing it in". I'm not a fan of the Prime, but this article is dreck.
I don't think there's anything I'd say as truth in the article. It's all comparing apples and oranges. Sure, the volt has more power, but 42MPG is a fail for me. Sure, it goes further on one charge, but I can go well over twice as far as a volt can without ever plugging in. The 4 versus 5 seats is kind of a wash too, the first volt was only a 4 seater, and i don't need a 5th seat. (or even a 3 or 4th for most of my driving.) Sure a bigger battery would have been nice, but at what expense? Just more weight and less cargo? Less ICE efficiency? More cost? I don't want to go there. I chose a Prime over *any* other car for my driving needs, and it has more than lived up to expectations.
The two main things that made me not look twice at a new Volt were the size of the back seat and cargo area and the fact that it's a Chevy. Add lousy mileage and terrible gas-only range and it's a non-starter for me. The Ev-only range of the Prime has bee such that I've only driven about 80 miles on gas while I'm in town in my first 11,000 miles. The rest of my gas miles were on legs that were, for the most part, outside the range of a Model S 100D so a little extra Ev range wouldn't have really mattered.
During the Christmas holidays, I drove my Prius Prime fully loaded car with 3 passengers going 50-55 Miles/Per hour uphill 20% grade on a highway on Eco Gas Mode. The engine was making louder than typical quiet noise. Other than that, I did not notice exceptionally bad under performing engine as the article has claimed. My driving is very conservatively and try to conserve gas by driving 5-7 miles below speed limit and recharge the battery when I gets home. Thus far, I have accumulated 120 MPG. I am happy with the amazing MPG and for the most part, the car drives well within speed limit. It seems the people who claim the car is lackluster are the ones who like to break the speed limit law going 5-10 miles over speed limit.