Should I trade?

I say do it.
Trade straight up.
You can always trade it later for something else when you get tired of it, and you will......
Unless of course finally owning the A-100 of your dreams is one of the things to cross off your bucket list.
Both the A-100 and the Dart Sport are nice and they look to be in the same shape, so i think it would be a fair trade.
You've got other cars, so why not?
Sometimes a change is as good as a rest!
Just my 2 cents.