That has been a problem on a lot of the W202 C-class cars.
Many times the needle JUST sticks to the resting peg. IF that is the case just tap above the instrument panel above the speedo & see if you get a reading BEFOFE you travel 100ft.
Might have to remove the cluster & clean the needles with Q-tip & alcohol
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)