Celerio performance review

I purchased my car celerio vxi two and half years back and I did more than 12k kms. This car's initial pick up is very poor, engine also tends to vibrate high when you start from first gear with ac on. You have to put the ac off to start moving even at first gear. Now this car develop heavy vibration at idle and shake the whole body when I halt at trafic with ac on. I need to put the ac off to arrest the vibration.