The parts that you want to put in your interior need to be in 3D mode to move them inside the car; the button to do this in the fixture UI is self-evident!

Note that interior design is really just a side benefit of having 3D fixtures more than anything else.

Thanks for your answer. A car should already have the right interior. Nevertheless, I don't find it easy to place the individual components in the right place in the game. Without good interior design it will be difficult or even impossible to sell a good car. What about the doors? Can they be opened? How to make the interior more accessible?

Originally posted by franky311069:

Thanks for your answer. A car should already have the right interior. Nevertheless, I don't find it easy to place the individual components in the right place in the game. Without good interior design it will be difficult or even impossible to sell a good car. What about the doors? Can they be opened? How to make the interior more accessible?

That's not how the game works. You don't need any fixtures (exterior or interior) to sell a car in campaign. It's totally optional. You can hide the body to give you easier access to the interior. Look for the buttons on the right side of the screen that allow you to hide various parts of the car. Individual doors cannot be opened.

As MrChips said, it's not supposed to be easy to place the individual components for the interior because the game was never designed with that function that in mind. Most people that go through the effort to do complete interiors take days/weeks to complete it (maybe more).

As for me, I made a decent interior once and decided the time spent vs fun had wasn't worth it. I'd rather spend my time tuning cars to perfection than making them look good. To each their own. Good luck and have fun!

Originally posted by CAMSO MrChips:

The parts that you want to put in your interior need to be in 3D mode to move them inside the car; the button to do this in the fixture UI is self-evident!

Note that interior design is really just a side benefit of having 3D fixtures more than anything else.

i kinda wish you made an editor for the interior making it easy to make the way it is now is really bad