Original logo

Models can be removed after submitting DMCA takedown notice or without it if the models optimize for 3D printing. The fact that somewhere someone sells models with original name and logos is not a factor that, in the event of litigation, will be interpreted in your defense. It is best to use only your textures, logos, names, decals and blueprints.

Of course you can sell branded 3D model with logos (for example Volkswagen, Nike, Boeing etc.).
Most of the brands are allowed for selling.
There are few examples/exceptions like BMW which are prohibited from selling.

So as you said you should indicate the name of the original product in the description.
And you should choose Editorial licence.
And of course you should not remove logos from branded models and sell it as "generic".

You choose the Editorial licence in publisher when uploading new 3D model to CGTrader. And I don't know what is the opposite that it is not worth to sell branded models with logos or what? The legal and right way is the only one. If selling branded model you must sell it as branded models with all the logos. Sometimes the model can be deleted when company like BMW decides it.

keep working