Car parking issue in multi story apartment


I have a 2 BHK flat in an apartment in Noida, NCR region.
I have purchased a covered car parking slot at the time of purchasing the apartment…
But while alloting the slot, they have allotted me a parking space which is very small in width. it is only 6.5 feet in width and has pillars (walls) both the sides so it is difficult to open the car door after parking the the car. Builder is not ready to change the car parking space now.

my queries are:

  1. What is the legal car parking size for multi story apartments in India?
  2. What are the legal options available to force the builder to change my car parking slot.