Originally Posted by
pizzaguy
Waste of time at this point. You don't need a 'Crossfire expert', you need those damn codes.
Sounds to me like a coil pack has, perhaps, failed. That, or an injector has failed OR you have crappy gas in there.
OR that you have low fuel pressure.
ANY competent car guy can get to the bottom of this. For what you are talking about, my local garage can handle it. BUT, it would not be a bad idea to find some garage that is known for Mercedes knowledge.
The fact that it starts and runs momentarily eliminates a lot of things like the usual modules involved in starting, which leads us To what it probably is, air fuel and Spark, any one of those in the wrong amount or ratio will cause your symptoms, the actual code numbers would be most helpful.
With that said I agree with pizzaguy. We need ALL the facts in order to help you. 🤔