bought car at about 80,000 miles in 2017. none of the doors would stay open even slightly. even on seemingly completely flat surfaces, they would shut on me, slamming my legs, etc. very annoying. I got new door stays (also called door checks or checkers) online. for about 20$ each. They work good, but we'll see how long they last. pretty easy to install, but you do have to take off the interior door panel to do so, which can be a little tricky, making sure not to break or bend any of the pieces that are used for the door handle and lock mechanisms. Not hard though, if you've done stuff like this before. probably 15 mins per door or less.