The sultan classic has 30 total inventory space for some reason, which is the same as the dirtbike, when the sultan classic is a four door car with an okay sized trunk.
I believe the inventory space for this vehicle should be the normal amount for a small car, and not the same as a dirtbike which visually has almost no storage space. It just doesn't logically make sense. I don't know what other sports cars this lack of space applies to, but with the sultan classic being a four door with a normal sized trunk, the inventory space should be normal.