Q. Which is better gear box IVT PETROL OR AT DIESEL?

Here, IVT would be a better choice if you want a smooth and linear drive quality, and your daily car usage is less. On the other hand, if you want a bit better power delivery and daily car usage is more you may go for Diesel AT. Do take a test drive for better clarity. Check out authorised dealership details.

To put it short it depends on what you want. there are pros and cons in both.