I would like to share something about Indigo SLx. Being a loyal customer of Telco as my first car was Indica V2 which I used for 3.5 years, gave a good service the reason I have sold out was the vehicle was under water during 26 July 2005 monsoon incident.
Any way after that I bought Indigo SX and it is worth your money for this type of Car.
It is fully loaded and comes with turbo engine Diesel injection- TDI.
Good performance and average out to be 16KM per Liter without A/C.
Also took the car for the long drive from Mumbai to Rajasthan , the experience is superb comfortable to carry 5 member comfortably for such a long drive non stop 1200km covered in one day only halting during meal and tea break and top up fuel which was two time stop at the fuel station before reaching the destination.
I think for the fuel price hiking like any thing every now and then it is the prefered vehicle for this Average in this sector I dont think any other car can give you this kind of super average and that too with very minimum maintanance.