[nathantotten]

Have you ever been in a taxi? The above is what I expect from Uber. I only hope to make it to my destination alive in the average taxi.

[yen223]

Therein lies the problem with 5-star ratings. It's entirely subjective. There's no standard as to what makes an experience a 4-star one instead of a 2-star one. Relevant xkcd: http://xkcd.com/937/

Personally, I think the "thumbs-up/thumbs-down" system does a better job.

[wwosik]

Is it an American phenomenon? In Europe I expect a taxi driver to be quick to turn up, helpful and knowledgeable about the destination. Granted, I don't expect water.

[eridius]

Do you expect tons of leg room, with good-quality posh seats, driver not using a cellphone, no radio playing (unless desired), etc?

[wwosik]

Well, I don't expect enormous leg room and posh seats, just to be comfortable (and clean). It may depend also what you define by those. Very often the car is a Mercedes so I'm rather fine with that. I actually prefer radio on, but never had the trouble to have it turned down or off when I wanted to call someone or chat with the driver.