I’m coming back to this thread because I failed to clarify what I believe the definition of a “junk car” is (on your property). I actually had this conversation with my father years ago ... and my older brother chimed in, too (they disagreed with me)!
My brother lives north of Chicago, in a subdivision where you can’t even have an unregistered car on your property (unless it’s hidden inside a garage!). I think that’s extreme, and I would bet this rule is rarely seen elsewhere. My father used to park on the street in Massachusetts, where it’s impossible to park a “junk” car, so their perspectives are/were too narrow to even participate in the conversation.
Here’s what I think the rule should be, and ostensibly IS in many jurisdictions: (and remember, we’re talking subdivisions here ... if you live “out in the boonies”, nobody cares):
You can have a “junk car” on your property if it has every appearance of being immediately driveable. This means, 4 inflated tires, washed clean, and parked on your driveway.
So - this vehicle could be missing parts of the engine, transmission, exhaust, underneath ... but as viewed from the street, as long as it still looks driveable, that should be the only criteria.