I failed the first time for the "maneuvering" test (i.e. when you have to park the car in few areas between poles), mostly because I was way too nervous, and it was the afternoon in summer (i.e. quite hot).
I repassed the test two days later, on a morning. I did not succeed much better, but as I succeeded those that I failed the other day, it was globally OK (I was surprised, I thought it would be considered as failed again). Its a luck for me that they accepted it: you can only fail once, if you fail a second time you have to take at least few hours of driving school ("auto-école") before passing the test the 3rd time.

So then I had the test on the road, in the streets near the examination center. Since it was in summer and in middle of the morning, there was not much traffic, and I did not made any fault, except not taking the right street when the guy said "turn right" (there was a street at 90° right, and one at 45, in a ¥-shaped intersection (¥, not Y ), I took the second one instead of the first one).