Board Thread:Game Discussion/@comment-27510501-20160624211202/@comment-26829117-20170520173226

Good point though if you add all upgrades to a car whilst it's on loan then you could achieve 3 without 1 or 2 but it's unlikely because if you fully upgrade a car and don't win it then you're doing something seriously wrong and you can certainly achieve 2 with all cars upgraded :-D.

No, the friends like percentage is something else and we haven't worked out what yet. It appears to be the percentage of total trophies divided by 13,000 but we don't know where the 13,000 is coming from.