At the end of an Uber ride, you have four options. The first is the driver rating.
First of all, understand that 5 stars is an "A" and 4 stars or less is an "F."
Four or fewer stars means there was something significantly wrong with the ride -- dirty car, careless or rude driver...something really wrong. If a driver maintains a 4.6 average for any period of time, they get fired. 4.6 = 92%, which is an A in school, but it equals termination for rideshare drivers with either company.
Once you do the rating, you have three more options: "badges," comments, and/or a tip. From a driver's perspective, guess which one we prefer? Right...tips.
Badges and comments are nice to get, but do not factor into the driver's rating or anything else. I do read every comment I get. The more specific the comment, the more helpful and appreciated it is.