Electric car fans keep talking about how you don't have engine and transmission maintenance, which is true. However, those are also self-contained parts that have a lot of spare parts available and plenty of expertise in maintaining and so you can actually rebuild them as needed and it's not too expensive. There's also a lot of automation in rebuilding those parts. However, if it starts seeing all the body parts failing and the frame rusting out, which will happen eventually, it's much more expensive because there's a lot more labor and parts are often less available.
Don't get me wrong. Most people give up on their cars long before they reach the point that new is cheaper.
Unless we see a great push in good public transit such that most people choose not to drive. However that won't happen: Republicans hate transit, and Democrats like transit for non-transportation reasons.