My 2013 smart car has black soot from? tail pipe .

What is your question?

Bought it 3 weeks ago.After driving short distances I find black soot-slightly greasy like substance on wheel rims and spokes and lower part of back.Only had it 3 weeks Miles 49,269. miles.Have driven only about150 miles.Dealer was vague and said he knew nothing about the car. It is in pristine condition, just like new. Just located last owners name on my title papers so will contact him.no oil leaks noted. Have a limited car fax Nancy

How long has your 2013 Smart Fortwo had this problem?

3 weeks since I bought the car