I realize that there is a lot of micro-finishing done on engines today, and there are less metal bits floating about, but I still cannot change my ways and will most likely do the first change well below the standard outlinerd by smart. Probably at 3,000 for me. I pick up the car in three weeks now, so I will get some filters at the same time. The oil change is so cheap to do, I consider it cheap insurance on a longer lasting motor.
BMW recommends changes every 15,000 on my 325iT, but I never let it go that long. 7,500 tops, so I anticipate doing it doubly often on the smart too, but I will have to see how the oil stands up first. Most oil synthetic doesn't break down so easily, so it will be a case of what it looks like to me.