Everything is good except rear seat comfort.

Exterior

Very Good look, Good colour options,door opening is good, Thichness of steel is good,

Interior (Features, Space & Comfort)

If we travel in a car, 3 features are very important to be enjoyed/experienced over the entire duration of travel i.e AC, Power steering and Seating comfort. Rest of the features are only required/operated for few moments.In Wagon R and Zen Estilo Rear seat comfort is totally missing. Other features are good . Space in rear leg room can be increased.

Engine Performance, Fuel Economy and Gearbox

Had a test drive ,Engine performance is Very good 

Ride Quality & Handling

Had a test drive ,Engine performance is Very good 

Final Words

Finally I dropped purchasing this vehicle after seeing the back seat comfort which is very essential for the entire duration of the travel. Hope Maruti will do needfull.

Areas of improvement  

In Rear Seat the angle of seat shall be improved/matched to front seat angle , the breath of the seat can be increased.

 

Everything is good except rear seat comfort.Rear seat comfort is very bad.