Originally Posted by: xXtReMe sniP3R 
Mc12 corsa has the wrong splitter. The correct one is there but there is a Forza splitter that can’t be removed on top of it. This was not in the car ever and shouldn’t be there at all.
I looked at gameplay from the Series 9 Playground video and I see what you are saying, there are two possibilities:
1-Someone locked the Forza splitter onto the base model (probably while accident) while they were porting the car over
2-Somone using the car on that account while prepping for Series 9 threw on the splitter while messing around with tuning and never took it off.
Its important to note we never saw them mess with the tuning options of the car so we can't be 100% sure until the car is released (next week I think).
Originally Posted by: ST0RM HAWK 89 
A good chunk of the cars were pulled from Forza Motorsport 4 and they haven't bothered to go back and upgrade the textures and tweak the models so they function properly. As someone has already pointed out, the LaFerrari for example worked fine in FH3 and now it's active aero and fans no longer function in FH4. This goes to show that they're not checking over the cars they're importing to make sure they're working properly, they're just copy+pasting and it's getting real lazy now. I've driven some recent car pass cars that have paddle shift animations despite the car not being paddle shift, how the hell does that get the green light to be added when it's wrong.
Ya there are a ton of quality control issues with just porting models over. There are a ton of cars with low-res interiors and poorly modeled attributes. The Nissan Silvia S15 is still being recycled based on an incorrect 3d model from the original Forza days- this is not an accurate S15.

This is what a proper S15 looks like:

Someone brings up the issue with the S15 every game release but they are drowned out by people who've never even seen an S15. Reference this car in any other game and you know Forza is wrong.
Originally Posted by: BabySeal363 
The Apollo Intensa Emozione has a very conspicuous row of brake lights on its rear wing:
Does it work in the game, or just the other two?
I couldn't see the wing brake light in action, but from this:

Those lights are really on the underside of the wing, and the brake lighting from the gameplay was really really dim. It could be the camera angle is to high up (looking top down) for us to see the wing brake lights, I can't say 100% for sure until I get a better look at it.