My wife had a '13 ST3 with a sunroof. I'm 6'3" and 235#'s and had no issues with the seats. If you get a sunroof car you can't be taller than 6'3" as my hair rubbed the head liner, but I guess you could recline the back some more. She LOVED the car, but decided to stay home with the kids and she sold it with 8000 miles. Great car, never had a problem with it. Glad my PP '14 handles tighter like the ST than my '11 non-pp otherwise, I may miss the car more.
John