I've had four adults in my car many times. I can't recall if I've had two 6' ers sitting in tandem, but I've had people 6'3" in the back seat comfortably. My friends actually find the back seat more comfortable than most cars, in spite of the fact there is less than an inch from their knees to the back of the front seat. My concern is that I myself, at 6' 1" have my knees in the dash (though not touching) when driving the car with someone sitting behind me.