Q. If parking size is 7ft width and 16 ft long so which car is suitable?

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Depends on how much space is there in front of the garage space. 7 ft width is very restrictive and you should go for cars no bigger than Hyundai i10. If you can drive in straight without need to manoeuvre then 7 ft can be managed. Normally 8 ft width is given by builders but it is quite difficult, there is risk of damage .

Can somebody tell whether two 20 inch well filled soft suitcases can be accommodated in 2016 i20 boot?