If you are looking for revtron 4 cylinder engine then this is the one. Powerful engine and decent interiors fulfil the family requirements way par to other competitors. Tiago and Tigor also have Revetron engine but 3 cylinders.
Highway performance of Zest is super. 3 people in the rare seat doesn't make the engine power down.
City performance:- easy handling doesn't make you tired.
Not sure why Tata is neglecting this car.