Headroom Prius C - sunroof vs no sunroof?

I don't know the measurement difference but I'm guessing you'd be fine. The driver's seat is pretty low and if you check out some reviews on the internet there's some tall reviewers that fit fine w the sunroof just not so well in back.

 

I am 6' and I sat in a c with the sunroof option...did not seem to make much difference.

Older cars it did.

 

from toyota's website:

headroom front/rear: 38.6/37.0 (with moonroof: 37.9/36.4)

its a short car at 56.9" tall, and while the front drivers seat is height adjustable, the lowest setting still isnt very low. add the moonroof cutting 0.6" off the headroom, and the car may not fit every body type. you have to try it out to see for yourself...

where the moonroof probably makes the biggest impact is in the rear. not so much the left/right seats, but the center seat is raised and you really cant fit more than a child in the middle...