I am facing an issue in our 2010 city about 161k driven. So the car feels very light and agile without AC, but with AC not so much. Now if I am cruising at a particular speed with AC turned on there is no feeling of heaviness. If I accelerate the car from 1.5k RPM to 2.5k RPM the power delivery is smooth and linear but if I do the same with the AC turned on, the power delivery is smooth and linear up to a certain point but you feel a sudden loss of power when the car hits a certain RPM range let's say when accelerating from 1.5k to 2.2k the car's power delivery is smooth and linear but as soon as it hits 2.2k RPM there is a slight power loss that is very obvious. Please note that this is with the same accelerator input and the power loss is not felt when the AC is switched off. I've not had it checked from anyone as of yet, just wanted to get an idea before going to someone.
@Xulfiqar if you could please share some insight.