How many people can fit in a 1991 Mercedes- Benz 300SE?
4 adults should be able to fit.
More the 2 people in the back would be tight.
how many people in total though?
As many sets of seat belts that are in the car. So Four people, 2 in the front, 2 in the back, maybe 5 if there is a belt in the middle. HTH's