The contact owns a 2021 BMW X7. The contact stated that while the contact's wife was driving at an undisclosed speed, the contact's wife noticed a smoky fume in the interior of the vehicle. The contact's wife continued to drive the vehicle to the intended destination. The contact stated that when the wife returned to the vehicle, the contact's wife noticed that the smoky fume was still in the interior of the vehicle. The vehicle was driven to the contact's residence. The contact stated that upon removing items from the vehicle, the contact noticed that a cardboard box that was seated on the driver's rear seat was on fire. The contact extinguished the fire. No fire report was filed. No injuries were sustained. The contact then contacted BMW and requested the vehicle to be picked up. The vehicle was towed to the dealer. The contact stated that the vehicle had been at the dealer for two weeks. The contact was informed that the failure was due to no fault of the manufacturer. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 25,320.