I bought my first Mercedes-Benz last week. It works fine, BUT, on my first long ride, after about 150km, the engine just "dies" on the road! It feels like a fuel-"hick", it coffs and when i press the gas the engine don't react... but restarts fine after a short while, but it repeats. When the car "rest" over night, next day it works ok, but after a while it happens again, it happens at any speed and any gear. I put it neutral and engine starts, but I can't trust the car on the highway. What is the problem: Temperature? Fuel-injection? Any ideas or solutions?