What are the differences between Tata Tiago CNG XZA Plus AT and Tata Tiago CNG XZA NRG AT?

Tata Tiago CNG XZA Plus AT and Tata Tiago CNG XZA NRG AT does not have any differences in specifications but they have differences in features. Tata Tiago CNG XZA Plus AT has projector headlamps, Fully automatic air conditioner with automatic temperature control but does not have push button start