1984 Mercedes-Benz 300SD Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 1984 Mercedes-Benz 300SD, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Brakes120.0%
- Driver assistance120.0%
- Electrical120.0%
- Engine120.0%
- Tires & wheels120.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
WHILE DRIVING ON THE HIGHWAY, THE ACCELERATOR PEDAL STUCK AND THE BRAKES FAILED TO STOP VEHICLE, CAUSING LOSS OF CONTROL OF THE VEHICLE. *AK *YD
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
WHILE DRIVING ON THE HIGHWAY, THE ACCELERATOR PEDAL STUCK AND THE BRAKES FAILED TO STOP VEHICLE, CAUSING LOSS OF CONTROL OF THE VEHICLE. *AK *YD
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
WIRES UNDER THE HOOD IN THE ENGINE COMPARTMENT ARE CRACKED (THE WIRE INSULLATION). THE INSULATION FOR EACH INDIVIDUAL WIRE IS CRACKED (OWNER CAN SEE THE COPPER WIRE) THE DEALER HAS BEEN NOTIFIED. *AK
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
CAR BLEW CYLINDER HEAD GASKET CAUSING ENGINE OIL TO BURN EXCESSIVELY.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
TL* THE CONTACT OWNS A 1984 MERCEDES 300SD. THE VEHICLE WAS EQUIPPED WITH GOODYEAR ASSURANCE COMFORTED 195/70/14 TIRES. UPON EXAMINING THE VEHICLE, THE CONTACT NOTICED THAT THE FRONT PASSENGERS TIRE WAS DEFLATED. THE CONTACT ALSO STATED THAT THE SIDEWALLS ON ALL FOUR TIRES WERE DRY AND ROTTED. THE FAILURE AND CURRENT MILEAGES WERE 228,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .