A diesel in the small hatch segment was unheard of, till Maruti Suzuki brought in the Celerio with a diesel power-plant. A small displacement diesel hatchback was now available for less than Rs. 5 lakh, but Tata Motors came into the picture, with what can only be described as a refreshing change in its portfolio, with the Tiago and pushed the price further down, to make one available for less than Rs. 4 lakh. Essentially it was made to cater to a crowd, which prefers cars with low running costs; both the Celerio and Tiago fit the bill, which is why we brought them together, to find out which one of them is better, in terms of a complete package.