The primary responsibility of a mechanic is to repair a car. However, their roles are significantly more in-depth than just doing repairs or replacements on parts of a car that no longer works. For example, if your car is acting weird and you don't know what's going on, take it to a local mechanic. With their experience and skills, they're much better suited to diagnose and identify what's actually going on and recommend some solutions. On top of that, mechanics also do routine servicing, maintenance, and upkeeping of a car for you. These can include simple checks like inspecting the tire pressure or tougher tasks such as replacing the brake pads once they've worn out.