Risks associated with Friends and relatives performing an inspection:
Having a friend or relative inspect today's complex automobiles can be disastrous. You could end up with a vehicle costing you hundreds or thousands of dollars in repairs, or purchase a vehicle with previous frame damage. There is also a good chance it can damage your relationships.
Many years ago, when cars were very straight forward, a person with the basic knowledge of auto mechanics could help you when purchasing a used vehicle. Those types of inspections became obsolete in the early 70's. Today's technically advanced automotive systems need a Master Technician to properly inspect each mechanical and electrical systems and a frame specialist to determine previous and existing structural damage.