Those are fantastic figures on FE front. I recently bought 2013 facelift version of liva gd sp. You can see my review here My New Toyota Etios Liva GD SP
On FE front, my first tank full gave me 16.17 kms/lit 100% AC on and 100% city driving. That's way too below as compared to your FE figures. My car has only 900kms on the odo.