I Guys, This is my fist posting so hopefully I have done it correctly . I have a 2001 SLK which I have owned for a year. She has full MB service history and just 59,000 miles. Sometimes such as yesterday, she just would not accelerate from standstill. It was like she had fallen asleep and the long, long lag to get speed up can be dangerous as even leaving a very large gap when pulling into traffic she accelerates so slowly that the traffic catches up and the only way I can build up speed is to floor the throttle literally. I have of course done the obvious checks such as making sure she is in "drive". The handbrake is not on. I am not accidentally braking with my other foot and the engine still sounds like all cylinders are firing. Mostly she runs fine and is a joy, but 20% of journeys are a nightmare for the reasons stated above. Can someone please advise me what might be wrong ! It is spoiling my ownership experience.