Any vehicle is shitty if it's not maintained. I don't understand why people think it's marque specific.

About the door panels, no, they don't vibrate if you reinstall them correctly. Eventually, you might have to pull them to fix a rattle. (search my posts for hot glue gun and doorskins)

Congrats on your purchase

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Previously owned: '03 4.6iS Dinan Supercharged