Was in minor car accident last friday and now i have severe numbness and burning sensation on left buttock?

Get checked: Spinal and subtle vascular injuries can present in delayed fashion.

Define minor : In setting of a traumatic event, a lumbar spine disc protrusion/herniation can cause these symptoms. This is sometime referred to as a "pinched nerve", "sciatica" or radiculitis. It depends on various considerations, including one's risk factors, predisposition or susceptibility to a medical condition, as well as the momentum involved, translational forces from a "minor car accident" is possible.