Welcome to the w203 owners club
From an ex-member
My buddy has an early one.. The interiors of the face lifts are much much nicer. Sweet car, just be careful with the paint. Wash and wax it often, the early cars were way worse than the face lifts I've gathered but the 203s rust a lot.
Enjoy it
For the 2005 up models, there's very few things to watch out for in the future...and considering the U.S. Never got that engine, I can't think of anything(no knowledge of it). There's nothing really special about it when it comes to keeping it going, just do the regular maintenance and you shouldn't have any problems. I'd recommend buying used parts when it makes sense because the price difference is astronomical in some cases, if something non-mechanical was to break.Do you have any tips or anything I should be aware of?