I was too worried about these issues. I absolutely hate noisy cabins. But then I thought there isn't really any major faults in the car. The Engine, Suspension, Brakes, Electrical System and other major systems are all problem free. How difficult it can be to fix these minor issues. It's just a car, not some rocket science. The world is creating Engineering master pieces like "Tesla" and if we can't fix these small issues ourselves then we don't deserve good cars. So even if the company won't fix these issues, I would work on them myself and find solutions. How hard can it be? e.g> Aqeel bhai installed door rubbers himself and the wind noise is resolved just for 1600 rs.