Car mechanic simulator is extremely realistic when it comes to removing and reinstalling parts in the correct order. However, being a mechanic is much more than replacing parts. It involves troubleshooting a problem. Depending on the problem this requires the use of specialized tools and equipment, which means knowing how to use that tool or equipment. You need to be able to identify a part that may not have completely failed, but may be just at the edge of a usable tolerance. Knowing what tool to use far a specific scenario is important. When you are working on a vehicle you need to know how to overcome challenges like removing damaged hardware, rusted parts, etc.