I have a manual fiesta and since the summer started I've been using my AC to cool off my car(obviously)... Anyway I feel like when I put it on my car feels a little more sluggish at lower speeds. Does anyone know if the two are related? I'm just curious
That is a normal issue. The AC compressor is run off the accessory drive belt on the engine. When the A/C is turned on, the clutch on the compressor engages, which in turn creates a fair amount of drag on the belt system, and because of this, the engine has to work a little harder. You will notice it most when starting from a stop and in highway speed passing situations.