my benz is hard to get up to speed and once it does it drops down but when you mash the pedal down it kinda sputters and does nothing until you mash it all the way making it go into passing gear. thgen its ok but then repeats itself. this is constantly happening.
Sounds like tranny problem. Instead of mashing down the sccelerator... shift your gear selector from D to 3... if you can accelerate fast with 3 then it is not fuel problem.
When you accelerate moderately from stop to say 40 MPH... does it shift gear so fast like from 1 to 4th and that it doesn't stay in 2 or 3rd for a while? It is your tranny.
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