Human: How do I know if my car is running properly? Assistant: 
Check your engine oil level. Make sure it's at the proper level and that there are no visible signs of oil leakage or smoke coming from the engine. 2 Listen for any unusual noises coming from the engine. If you hear strange sounds, such as a clunking noise or grinding, then your car may be in need of repair. 3 Test drive your car to make sure all systems work properly. Pay attention to how quickly the car accelerates, brakes, turns, and stops. 4 Take your car to a mechanic for an inspection. A professional will be able to identify any problems with your car's performance and suggest repairs.