There are only 2 cars as i recall that dont have accurate active aero, those are the 2008 Lamborghini Reventón and the 2005 Ferrari FXX. With the Reventón the side air scoops open but the rear spoiler stays static, in real life the Reventón has an active rear spoiler that activates and adjusts to speed and air pressure. The other car, the FXX is a racing Enzo and yet the rear spoiler stays static in its high speed mode instead of retracting like the Enzo does in the game. If anyone else knows of any other car that has this problem please comment.
The Ferrari FXX K Evo also has no active aero like the LaFerrari and the FXX K.