Deficiencies in the RX-8?

Hello! I would like to have more detailed information about defects, especially on the motor of the Mazda RX-8. I have heard several times that the Wankel motor should be susceptible and reperatrurintensive… I would also like to know if the rear doors are causing problems, e.g. if you only try to close the rear doors AFTER the front ones. I hope the questions have not been dealt with so often yet, so that you are bored ;-). Would be happy if someone can help me.