Engine backfire is a sign that indicates Mercedes is having a significant problem with its combustion process. Initially, because of a backfire, you might lose a lot of wasted fuel. But if it lasts for a lasting spell, then it can cause a severe damage to the engine. Bad engine timing, rich fuel mixture, older engine issues, lean fuel mixture- are the common causes of an engine backfire in Mercedes. Learning about what causes a Mercedes to backfire and ensuring that the Mercedes is performing optimally by taking good care of it on a regular basis is what you should do in order to prevent unexpected breakdowns.