score:4
In my experience as a Canadian citizen, it's normal (though not necessarily expected) to tip taxi drivers a few dollars per trip, and I don't see why it would be different for Uber drivers. I would say if you have heavy luggage or many smaller pieces that it's polite to tip a couple dollars or so extra for their trouble, though it's still up to you.
Upvote:0
(disclaimer, I don't uber, but used Teo before if closed down last month in MontrΓ©al).
I usually tip a couple of bucks for the ride and maybe a one or two bucks additional if driver is a good driver (takes care of luggage, drive safely, or is not overly talkative).