i think there is 4 or 5 cuz britney spears was able to fit her kids in that car?

the sl is only a 2 seater as for the clk or cl or cls are seats for 5.... the sl is more reffered as a more sporty 2 door mercedes

The SL mercedes has 2 seats in it. The car your thinking of is the CLK, that seats 5.

two but it has a small space behind the seat that a child could actually fit in