Why does the engine feel sluggish when accelerating?

[McSara]

When pressing the accelerator, the car does not speed up and the engine feels sluggish. The car has weak acceleration and a muffled sound, which are all symptoms of insufficient engine power. Common scenarios: This often occurs when the car is driving at high speeds or going uphill, especially under heavy load. The engine power is noticeably insufficient and weak. When accelerating by pressing the accelerator, the speed does not increase rapidly. The exhaust feels muffled, the car lacks driving power, and fuel consumption rises sharply. Causes of insufficient car power: Carbon buildup issues. Fuel system: Using an incompatible fuel grade (for example, using 90 octane instead of 93 octane). Air intake: Air is one of the power sources for the engine. If the air filter is not cleaned in time after long-term use and becomes clogged, insufficient air volume will cause the combustible mixture to be too rich. Engine overheating.