Join Date: Aug 2007
Location: Truth or Consequences, NM
Programs: HH Diamond, Marriott Titanium, Hertz President's Circle, UA Silver, Mobile Passport Unobtanium
Posts: 6,192
From Uber's perspective, 5 is the norm. If you rate the driver lower than 5 then there must have been a "problem" of some sort.
Also, from the passenger perspective, if your rating dips below 4.x (whatever x is), you may have trouble obtaining rides as drivers will refuse to accept your request (because you are a potential "problem" customer.)