Sorry to hear about your problem. I suggest you include the year, specific model and miles when you post.
What was the last work done on the car?
When was the last time you had the cap and rotor replaced?
Do you hear the fuel pump when you turn the key on to the first position? Sound would come from the right rear tire area.
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)