If you're looking for a luxurious car and can afford an average of 12kmpl, this is the car

Finally, we have a sedan with all the luxury which can be afforded by middle class. The looks are great. It's very different from the earlier versions of indigo. The 200mm extra wheelbase provides a lot of leg room inside. The rear AC vents, chiller box, cup holders, 6-way adjustable seats give this car feel of merc. There's ample of boot space.

Talking about engine, tata's are now using DICOR engine which is much refined than the earlier versions and TDi engine. Power is 70bhp which is slightly more than logan (66bhp) and less than swift (75bhp). Though the engine makes slightly more noise than its competitors, it's not too much that one can not bear it. The mileage is arnd 12.3 overall compared to 15+ given by the cars like logan and swift.

If you're looking for sedan car, this is the best choice as far as my opinion goes, the other cars available in this segment are higher in cost and do not afford the luxury provided by this car. Logan is almost in the same range as this car. So I would give a brief comparision between these two cars

Logan 1.5 dci DLS has better engine but uses only 8 valves compared to 16 valves in indigo XL, engine noise is lower, less legroom (though the legroom is enough, i'm only comparing it with indigo XL), boxy looks from behind, interiors are bad compared to XL, the buttons are all over place, only one indicator for both left and right turn which can create confusion sometimes, In mumbai they've got service centres at only kurla and ray road whereas tata has got service centres at many places. Cost of XL is arnd 25000 less than that of logan

So in all, if you're looking for a car with luxury and ready to compromise little on engine part, than this is the car