Hey @Adeel_Yaqoob!
It may be that your car is using the capsule component as the basis for any collision. Is there a specific reason why you would not be able to use a pawn, which will most likely work better for your situation?
And as @EliasWick pointed out, it would be best to provide us with screen shots of things like your blueprint, specifically the viewport, for your vehicle as well as any other blueprint or setting that mat be relevant.
Any additional specifics you can provide may go a long way in solving your problem!