The Toyota Taisor CNG has the best engine among the cars you have shortlisted. It’s the one to buy if you’re comfortable with the cabin.
Some of our taller reviewers did mention that the driving position feels a bit high. If that’s not an issue for you, the Taisor CNG is definitely the best choice.
We also compared the Exter CNG and Punch CNG, and found the Hyundai Exter to be a more rounded package overall.
You can read the detailed review here:
Tata Punch CNG vs Hyundai Exter CNG - Dual Duel

