How much does your petrol consumption increase when using aircon?

[upup]

Same here. No difference in my Corolla. I usually get 12.5 to 13 km per litre with or without the aircon on.

so everyone, get yourself a corolla.
depends how big your compressor is, and your driving habit.
agree with the other guys.
You can also look if the compressor kicks in and out now and then and while accelerate hard your compressor should pause.

 

[ToxicBunny]

Notice no difference in my car..

Then again, I have climate control and its always on... so yeah.

Oh and the motor is supercharged

 

[PESM]

I drive a polo classic 2003 model, with aircon on it looses a bit of power, and petrol consumption is a tad higher. Resorted on driving with open windows and aircon off. much better results