When my AC is on, my car consume more fuel (more than 30% I guess) is there anything wrong with engine or AC?
For an example, when I drive car about 10Km, the average fuel consumption is 10.
When I park the Car ( engine is in start mode and AC is on) I see average going down to 6 within 20-30 mins (Temperature set to 27).
Car model - Suzuki Swift 2010 (Japan)
Is this normal?