Q. Which is better tata tiago , Alto k10, Hyundai i10 or maruti ignis in overall terms?

It depends on your usage honestly it's a difficult one to answer If safety & average performance- Tiagojust for commute- Either Alto or i10For driving pleasure with SUV feel & good ride handling then definitely Ignis

Tiago's wheels are small. i10's ground clearance is not good. It's seating position is also not good. Ignis is the best among these three. Bigger wheels, high seating position and high ground clearance, powerful engine, fast pick up, sturdy build quality, driving comfort and many more make ignis a better choice.

If you are looking for safety (5star) then I prefer tata tiago And if you want better mileage with safety (3star) then you should go for Maruti Ignis.