It has been said that tall people have to shop for cars like other people shop for suits. It is not easy to find the fit and an inch can make a big difference. Below is the information and dimensions that all of the car reviewers have so far withheld.
It is all good news! The three is actually better than the S when it comes to fitting my 6’-4” 210 lb, 36” inseam frame in comfortably, and I am in heaven. Although the seat cushion is a little shorter than I would like the back cushion is tall enough and very well shaped.
Significantly, the sun visor slides completely to the door frame jamb to cover the dreaded afternoon glare spot when you have the seat back. This is not only a comfort but a safety issue and hopefully the S will follow suit.
Headroom is superior to any sedan that I have been in. This is because the structural rail between the skylight and the doors is very thin. 5 1/4” wide from door glass to skylight glass in the M3 as opposed to 9 1/2“ wide in the “S”. This means that there is clear space to the side of your head as well as directly overhead. With the seat down to the lowest spot I have 5” of clear space from the top of my head to the glass roof. (Note: get only the glass roof version). A 6’-6” friend had abundant head room. In the rear seat my head is close to the glass ( 3/4” clear) but does not touch.