You can change the star rating you gave a driver from the receipt emailed to you after your trip.
From the email, select Rate or tip. You'll be redirected to your account at uber.com, where you can update the rating. If a trip was cancelled, you won't see the option to rate the driver.
If you rate a driver 1 star, we'll try not to match you with that driver in the future.
Ratings are designed to support both riders and drivers. By providing an accurate rating and sharing your feedback, you're helping us ensure ride quality for everyone on the Uber platform. You can learn more about ratings from our Ratings help article.