Is the Ertiga a fuel efficient car? Would it be a wise option for a road trip between different states? How good is the fuel economy?
The Maruti Suzuki Ertiga is a very good car for long as well as short-distance drives. There is ample space for luggage and you can always get a roof rack fixed. The passenger capacity is 7 so people can sit comfortably throughout the rise unless its more than 7 people (which is not preferable) for longer rides.
The only problem that may bug you is the turbo lag initially but eventually, it picks up and is good after that.
Sometimes if you are driving on rocky roads, you may end up scraping the bottom (belly) of the car.
I have personally driven an Ertiga for about 320 km and it was a pretty comfortable ride. I, however, do not have recordings of it. However, I came across this video of a person driving and Ertiga and he explains his experience in it (in Hindi).