Manifold/header/muffler/tail Pipe problems of the 2013 BMW 650

I was driving and the vehicle started to shaking and vibrating and smoking like hell. Vehicle information displayed stated drive train malfunctions drive moderately. I call up the dealer and they advised me to drive the vehicle to the dealer which was like 2 miles away. When I reach to the dealer location I see smoke coming from the front of the vehicle. The dealer take the vehicle and they said they are going to run a diagnostic test on the vehicle to see what's the problem. 2 days later the dealer called me to come down and look at the vehicle. When I went to see the vehicle, they had it on a lift. From underneath the vehicle, the drivers side intake manifold and other parts burned up and fuel was dripping with fuel smell. The dealer said they not going to fix the vehicle because it's out of warranty. I went ahead and file a claim with my insurance company for fire damage. Afterward the diagnostic stated failed fuel injectors. All 4 injectors at bank 2 failed and all 4 cylinders full of excessive fuel and was mixing with engine oil. Injectors was replaced under extended warranty. BMW of north America denies fault of fire damage.