While I'm largely in the camp of "it's my property I can do what I want" (this is why I made sure to buy a house without an HOA) the idea that a broken down car

While I'm largely in the camp of "it's my property I can do what I want" (this is why I made sure to buy a house without an HOA) the idea that a broken down car sitting there can't affect someone beyond being an eyesore isn't necessary true. I can say from personal experience that even a car that was in decent shape when it was parked over a sufficient number of years will dump it's miscellaneous fluids on the ground, get really smelly as the interior starts to decay and become home to any number of insects and wildlife. I also wouldn't care to speculate on what the tires, paint and metals are leeching into the ground as they slowly degrade. Sure this isn't going to be an issue with a car on blocks for a few months, even a year, but I've seen cars essentially abandoned long enough if you wanted to move them you'll have to literally dig them out and remove them in pieces.