Eastwood Mig 90

I think you'll be fine with it for the vast majority of car repairs. Like everyone already said, don't mess with trying to flux core weld sheetmetal. Also invest in a decent helmet. I made the mistake of using a Harbor Freight one for years until it finally bit me in the ***. Got a Hobart one off Amazon that has worked much better with better visibility.

Welding pliers, vice grips, magnets and a copper spoon should get you going nicely for sheet metal work.