F1 Race Stars is almost an average game, and this is due to fact that ALL tracks have special/exclusive sections/paths which can only be accessed if you get a weird item (good luck on guess about where it appears on each track). Since i, like almost anyone else, very rarely can guess at first where such items are located, but, for our 'luck', AIs know where and when to get them on each track, so, with that, they get a GIANT advantage over any other racer. I see some people saying that this game is hard, but it isn't: it is just badly unfair on you or anyone else which don't get such 'special' item i described here.
That is sad, since i really enjoyed this game.
For me, the best racing game is, without any doubt(s), Modnation Racers: it let you create (and share online if you wanna) your characters, cars and tracks! Not to say that this game have a real hard AI (even on easy they are brutal! lol) which won't let you relax for so long on races, UFG (the game's creator) know how to make nice and, sometimes, challenging tracks, so many options and so on. Best racing game ever which is a must-have as a remaster on PS4! =D