I have innova since Feb 14.it is a best MPV with minimum cost of maintaince and maximum level of comfort.
Total kms driven-11500. Milage-city-9 to 10kmpl. Highway-10 to 12 kmpl. Good space inside.can accommodate 8 people easily.
Maintenance cost even low then a hatch.Service costs only ?3500 to 4000.Little bit pricy.but worth to buy. Most reliable MPV till date.good resale value.