one thing is certain if your rating is low, and your car is smoke free and clean it will drive you crazy trying to find out whats wrong, alot of it is that people think 4 stars is a good rating, so its ubers fault for not focing people to comment why they rated less than 5. The fact you can get fired when 8/10 trips is a 5 star is a joke, esp with them pushing pool which wall cause ratings to crash