Has anyone taken the hotel transport from the airport to the hotel before?
Can the transport car contain 4 medium sized luggage and 4 passengers?
I have taken the transport both to and from the hotel to the airport. They may need to send two cars. I am not sure of the size of their cars but they are reliable. Just email them to confirm the details.
You should ask the hotel for an SUV pick up instead of sedan. That should work (they often sport a luggage rack on the roof).
If you advise hotel that there are this number of passengers and bags they will arrange a suitable vehicle or else provide two vehicles. Hotel transfer is very efficient as a general rule.
Get an answer from Crowne Plaza Hotel Gurgaon staff and past guests.