Ok, I managed to drop by the Toyota dealer yesterday (to pick up my car insurance) and I had the opportunity to check two 2016 Aygos at the exhibition part (one of them an advanced trim, with white aluminum wheels)  - both of them had the same pattern under the driver's mat and carpet so it is not just mine. I had a short talk with one of the salesmen available and told him I am concerned about the existence of these soft spots there (e.g. carpet may tear if much pressure is put on specific spot