Both Tata Tiago and Hyundai Aura are of different segment. Tata Tiago comes under hatchback which proves to be more benificial for city traffic and have a refined engine and durability while Hyundai Aura comes under sedan which mave more interior space and comfort in long journies. So, if you are looking for a refined engine with a better drive for city tourer than Tata Tiago is a good option and if reliabilty and better command is required than Hyundai Aura is agood option. Moreover, you can click on the link to see complete difference and would request to take the test drive so that you can feel the difference and decide accordingly. You can click on the given link to see available dealership by selecting your city accordingly - Car dealership
All these cars are good enough and have their own forte. You are looking for a fuel efficiency, comfortable car for your family, you may go for Maruti Dzire. Maruti Baleno would be a good pick if you want a spacious car with more premiumness. If you want class-leading interior quality and smooth refined engine, you may go for Hyundai Aura. You may compare these cars according to their variants too. Do take a test drive in order to clear your all doubts. Check out authorised dealership details.