Excellent fuel efficient budget car

I am looking for CNG car, under this category wagonR is the car which ticks all the marks. So i planned to buy wagonR. Buying experience was smooth. I also use to drive swift so can't compare with it. But yes considering cost and other benefit car is good. Look is like tall boy design. Very spacious car. I will update the Performance once i ride enough. Service and maintenance all will be updated when I will go for that.