Have heard about numerous Tesla quality problems, but no personal experience, so won't go there. I do understand that for the high price of these vehicles, buyer would expect quality.I don't have personal experience, but people I've talked to who don't have a Tesla don't use their lane keep because it just bounces along the lane and their adaptive cruise control is very jolting (Volt and Outlander). The Tesla is butter smooth!
Regarding the adaptive cruise and lane assist. Our Subaru Outback has that as apart of it's Eyesight system.
- The adaptive cruise works fantastically. Never any kind of problem. We use it whenever we are on a highway.
- I turn off the lane assist. I don't like it because it feels like I am driving on a windy day. I don't always want to be where it wants me to be, for example when cornering.