What makes your car act sluggish?

i did not include all the things that could cause your car to act sluggish, but here's a few: not changing your oil. not changing your air filter. not changing your fuel filter. bad/old fuel in system. wrong fuel in system. water in fuel system. flat tires. broken engine components (electronic components, and mechanical components). dirty engine components. if there is something stuck under your car, like cats, or pedestrians. if your clutch or transmission is worn out. If you check engine light is on, then you may be able to narrow down the possibilities.