I am 5' 7" and about 170lbs. It is a bit tight getting back their but I am used to 4 door vehicles. Any way -- onc back their it is like sitting up front. The seats in the back are very comfy. Leg room may be a bit of an issue also if it is a bunch of tall people. But I guess that could be said about almost any car.
All in all - at my height and weight is is no problem to get in and out of the back seat and it is quite comfy.
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S's? Oh it has SS's!!!