u/Confident_Eye4129

Hello, relative WA newcomer, I wanted to pose a question about selling a vehicle

I recently purchased a used vehicle, and typically, the title was signed over to me upon completion of the sale. However, I'm not sure I like the vehicle enough to keep it. I have not yet registered the car. If I decide to sell it, can I just endorse the title I received upon purchase, to the new buyer? Or am I required to first register the vehicle?