Is something wrong with the nameplate on my Prius?

Nope, nothing is wrong with yours nor is it special the v on the back being the way it is.

Irregardless of how it looks on the emblem on the rear of the car, it is a lowercase v. Toyota uses a lowercase v when referring to the Prius v as well all over their site as well as their literature. This is because they used an uppercase V for describing the 2010 liftback in trim level V. Only 2010 models went by II, III, IV and V for trim. Beginning 2011 it went Two, Three, Four and Five for trim. Toyota actually italicizes the v in Prius v, but no reason to go that far.

The reason it makes a big deal, at least to me, is because it has caused confusion at times when people refer to their Prius v as a Prius V and some think they're talking about a 2010 liftback. Toyota caused the confusion, we don't need to continue it.

Also, you never see a 2010 liftback with a V because no liftbacks were marked II, III, IV and V to describe what trim it was same as they are not marked Two, Three, Four or Five to designate trim from 2012 till now. Same with the Prius v, one has to just know by looking at a Prius v what trim it is, Two, Three or Five.