Unless specifically requested by you or other valid reason, drivers are not to take a longer route.
If you have a preferred route, do communicate this with your driver prior to moving off. The best way to help improve safety and quality is to rate your driver immediately after a trip, or from History.
Tap on , History, and choose the trip and driver you want to rate.
The star rating system helps Grab keep a high standard of service that we can all be proud of. It also helps us keep track of passenger satisfaction and maintain high partner quality.
Currently, your rating of the driver is fixed after your submission and cannot be changed.