The most important SERIAL(vin) number is under the passenger side front seat. Run the seat all of the way back, there is a cut-out in the carpet. The serial number is LASER engraved into the floor pan at this point.
MB cars with factory alarms DON'T have serial numbers on the BODY parts after 1992 by USA law!!

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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)
Retired Moderator