general problems of the 1999 BMW 323

My 1999 323i caught fire immedietly after turning off the ignition switch once parked. There was a loud "snap", followed by large flames coming from around the hood and front wheel wells. The police and fire department arrived within 5-7 minutes (fortunately they are both located less than 1 mile away). Once the fire was put out, my car's front 1/2 was melted into my parking space. It was a complete loss and I am expecting that my auto insurance will pay very little; regardless that the car was in very good condition prior to this incident.