Hi Sir,
What you need is no wordpress. You need a website like Medium, but on auto mechanics. We will explain the system to you. You need an admin. The admin will accept the posts to be published, the users will register and submit articles on automechanics and videos, but will be showcased to admin first and then to the public.
We have more than 3 years of experience in full stack web development and we can develop this website for yo uin Laravel, which is an advanced PHP framework. Kindly, come to chat to discuss.
Regards,
Rob
Team CodeHut