The Toyota Innova HyCross is a good option for you. It is spacious, comfortable, and its strong hybrid powertrain will deliver an efficiency of around 13kpl in the city and 16kpl on the highway. Also, as a 7-seater, it is more comfortable, with ample space for adults in all three rows. Its ride quality is impressive in the city, and out on the highway too.
The Mahindra XEV 9S is much better equipped in comparison, and on account of its pricing, it is a better value for money. But while the XEV 9S is comfortable in the city, its ride feels a bit bouncy on the highway, and space in the third row is much tighter than the Hycross. Hence, as a 7-seater, the Toyota car is the one to go for.