Mazda 6 Problem

Hi guys ! I have a question to all Mazda 6 owners. I bought myself 10 days ago new Mazda 6. Last week I noticed when you let go of the steering wheel pulls the car to the right the same thing happened while braking and starting is not strong but always my 11 year old Mondeo did not have the problem.I was at the dealer there the track was adjusted again. According to the settings everything should be great but not. Dealer statement here:”it’s all with some cars are more sensitive than the others when it comes to road inclinations etc. What do you say about it.Has someone had a similar problem? If so please give you trouble and write couple words. MfG Entlöschter M6 driver