Power loss after standing ?

[RoKi]

Help please. I have a C180 Auto (1997) which starts 1st time everytime, but after standing (overnight for instance) it pulls away fine in the first couple of gears, then when due to change again dies on me almost to a standstill then suddenly away we go and drives normally for the rest of the journey/day. Anyone any ideas.

 

[R2D2]

I dont know what the experts think but how about a failing fuel pump or blocked fuel filter. When was the fuel filter last changed?

 

[RoKi]

Dont know is the quick answer, it's been Main Dealer serviced so who knows.
I want to get them to check it out but would like a few ideas as to what it may be before I do.
While on the subject of Main Dealers do you think it is necessary on a 7 year old car. It's in good cond, with 60k on the clock, the local BT garage is almost half the hourly rate.