I used the Lemon law in Texas on a Honda Del Sol. California has a similar law. Both state...
" If you take the care in for the same problem/repair 3 or more times, you can request the auto manufacturer buy back the car under the lemon law."
It was a bitch doing this even for a Honda. I had to go all the way to the top of Honda America. Process took about 6 weeks. I bought a new civic a factory cost.
A friend of mine had electrical issues with a Mercedes ck320. several months and several tries to fix he ended up throwing his hands up and screaming lemon. When Mercedes Corporate got involved, they sent an engineer from the design center to look at the car. Within an hour, he found a short in the wiring. They fired the mechanic for incompetence. The car never had issues since.
Either you truly have a lemon, or idiots are working on your car.