Since your running is that high, it would make sense to go for a CNG SUV to benefit from lower running costs.
The Maruti Suzuki Victoris CNG would be a good option as it’s comfortable, easy to drive, efficient (27.02km/kg claimed), and the boot space isn’t compromised, as the CNG tanks are placed underneath. However, if the CNG network around you isn’t very good, you could opt for the strong-hybrid version of the Victoris, which is claimed to return 28.65kpl.