The engine cylinder head cracked before the vehicle hit 50,000 miles. This caused oil to leak and burn in the engine compartment, leading to a burning smell coming into the cabin. Once enough oil had been lost, I got a low oil pressure light. I immediately pulled over and noticed white smoke was coming out from under my hood, and the smell of burning oil was quite strong. The problem has been confirmed by my mazda dealer. The vehicle has not been inspected by manufacturer, police, insurance. Just the dealer. The vehicle is currently at the dealer, and the cylinder head would need to be removed for inspection if requested. The smell of burning oil was the only early symptom, though I did not recognize it at the time.