Miatas fit drivers up to and including 6'5" perfectly.
This isn't completely true.
I am 6'0" and I do not fit in a Miata with the top up.
My wife and I recently decided we wanted a convertible. The Miata and Pontiac Solstice were at the top of our list. We test-drove a softop '08 Miata at the local dealer. With the top up, my head was jammed against a metal support beam for the top. If I consciously slouched I could fit, but I'd still hit the crown of my head on every bump. Extremely annoying. Not comfortable (for me) at all. Great car otherwise, but I just didn't fit.
I fit just fine in the Solstice. No problem at all. That's what we ended up buying. We absolutely love it.
