Even though I took my test(s) in the 1970s, when it was much easier, I still had 5 goes at it. I used to get so nervous that I couldn't control the clutch because of my shaking legs.
One test was going quite well, until we approached a zebra crossing with 2 women standing on the pavement by it. I stopped to let them cross, but it turned out that they didn't want to cross the road, they'd just stopped there for a fucking chat! Failed that one for not making adequate progress or something.
On my 5th test, I made some sort of mistake early and thought I'd failed again. When the examiner handed me the pink sheet that told you you'd passed, I actually asked him if he was sure. 
Then he asked me to start the car again and move forward a few feet. I was "WTF? You've just passed me, you can't make me do any more!". Then he explained that I'd stopped right by a tree and he couldn't get out.
We were on a slight slope, and it must have taken me 10 goes to do that hill start without stalling.
I reckon if he could have retracted that pass, he would have done.
Still, in 44 years, I've only had 2 (very minor) prangs and when we had the chance to be assessed by someone from the Institute of Advanced Motorists at work, my assessor said I'd have no trouble meeting the IAM standard, I had excellent anticipation and that I drove in a way that minimised fuel consumption.
I remind DP of this on the rare occasions he criticises my driving.