Thanks a lot for your expert advices, really appreciate them 
@ahsan1702: No i havent changed its air filter as of now, but I will be doing it as soon as i goto the Toyota showroom. Whats the A/T oil ? Oh and if suppose one of the sensor is not working well, then i guess ill have to sell out the car right ? :s
@HAshims : Well i think its both, caus I floor the accelerator irrespective of the speed of the car atm. Whats a tire jam ? :s And bro I only use petrol from the PSO - Company Operated outlet in defence, ab aur kahan se petrol bharwaon ? 
And whats a CAT ?
Main toh sooch raha hoon Toyota ke showroom jaaon aur bolo khol do pooray engine ko and check karo kia kharab hai and dubara fit kardo :s 