They do, they complain loudly. Modern cars also have computers built in, and car companies try to lock them down. This then makes it very hard for 3rd parties

They do, they complain loudly. Modern cars also have computers built in, and car companies try to lock them down. This then makes it very hard for 3rd parties to fix at times. Here's an example of car enthusiasts not just sitting down and lamenting, but successfully pushing for changes in laws: https://www.theaa.com/driving-advice/service-repair/right-to-repair-campaign https://www.theaa.com/driving-advice/service-repair/right-to... That's just the first useful link I could find in 5 minutes; which means there's bound to be a lot more if you google around a bit. (try "right to repair" and "eu" in your search terms)