1992 Mercedes Benz 400E problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
19 owner complaints analyzed
2 distinct recall campaigns
125,000 mi median reported failure mileage
Scope: 1992 model year. Data updated: . 11 complaints include usable failure mileage. View data status.
Owner-reported patterns
Most common problems
Electrical System:Wiring:Front Underhood is the most frequently named component, appearing in 7 of 19 complaints (36.8%). A complaint can name multiple components.
Recurring terms in complaint narratives
Topic
Matching reports
Share of complaints
Electrical and battery issues
16
84.2%
Engine operation
1
5.3%
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
Electrical System:Wiring:Front Underhood
7
Electrical System
6
Electrical System:Wiring
4
Engine And Engine Cooling
1
Power Train
1
Service Brakes, Hydraulic
1
Vehicle Speed Control
1
Component breakdown data
Category
Count
Electrical System:Wiring:Front Underhood
7
Electrical System
6
Electrical System:Wiring
4
Engine And Engine Cooling
1
Power Train
1
Service Brakes, Hydraulic
1
Vehicle Speed Control
1
Electrical System:Wiring:Front Underhood: 7; Electrical System: 6; Electrical System:Wiring: 4; Engine And Engine Cooling: 1; Power Train: 1; Service Brakes, Hydraulic: 1; Vehicle Speed Control: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
Under 25,000
1
25,000 to 49,999
0
50,000 to 74,999
0
75,000 to 99,999
2
100,000 to 149,999
6
150,000 and above
2
Reported problems by failure mileage data
Category
Count
Under 25,000
1
25,000 to 49,999
0
50,000 to 74,999
0
75,000 to 99,999
2
100,000 to 149,999
6
150,000 and above
2
Under 25,000: 1; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 2; 100,000 to 149,999: 6; 150,000 and above: 2
100,000 to 149,999 miles has the most reports with usable mileage (6). 8 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
Electrical System:Wiring:Front Underhood leads the component reports. Electrical and battery issues appears in 16 complaint narratives. Engine operation appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
VEHICLE CHECKED AND FOUND THAT INSULATION ON ALL OF THE FUEL INJECTION WIRING ,TEMPERATURE SENSOR AND FAN THERMAL SWITCH HARNESS DETERIORATED CAUSING WIRES TO RUB TOGETHER. CONSUMER DISCOVERED THAT HARNESS INSULATION IS MADE OF VERY POOR MATERIAL .THE INSULATION BREAKS VERY EASY AT THE TOUCH AND TURNS INTO DUST. THE WHOLE WIRE HARNESS IS IN THE SAME SITUATION. *JB
THE ENGINE WIRING HARNESS IN MY 1992 MERCEDES 400E HAS DETERIORATED AND IS CAUSING SHORTS THROUGHOUT THE CAR. THE GAUGES DO NOT WORK AND THE THROTTLE BODY IS FAILING. I HAVE HAD THE CAR TOWED TWICE BECAUSE OF THIS AND THE REPAIR IS IN THE THOUSANDS OF DOLLARS. THIS SHOULD BE A RECALL AND REPLACED DUE TO THE SAFETY HAZARD. MY CAR STALLED IN THE MIDDLE OF THE ROAD. *JB
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
19 unique complaints in this selection. Analysis snapshot: 2026-10-01.
57.9%Usable mileage11 / 19 records
100.0%Valid incident date19 / 19 records
100.0%Valid filing date19 / 19 records
100.0%Ordered incident and filing dates19 / 19 records
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
Component complaint heatmap
Component
1992
1993
Electrical System
631.6%ODI 10230774 · 135,000 mi
1992 MERCEDES-BENZ 400E WIRING HARNESS MULTIPLE FAILURES. REPLACED ENGINE WIRING HARNESS SHORTLY AFTER I PURCHASED THIS CAR (USED) IN 2005 DUE TO DETERIORATION OF INSULATION FROM THE WIRES. I WAS TOLD AT THE TIME THAT THIS IS A COMMON PROBLEM WITH THIS ERA OF MB DUE TO SOME PLANNED OBSOLESCENCE OR TARGETED SELF-DESTRUCTION BY THE MANUFACTURER. TODAY I AM TOLD THAT I NEED TO REPLACE THE WIRING HARNESS LEADING TO THE STARTER MOTOR FOR THE EXACT SAME REASON. THESE ARE EXPENSIVE PARTS, ONLY AVAILABLE FROM THE MANUFACTURER AND REQUIRE EX…
VEHICLE CHECKED AND FOUND THAT INSULATION ON ALL OF THE FUEL INJECTION WIRING, TEMPERATURE SENSOR AND FAN THERMAL SWITCH HARNESS DETERIORATED CAUSING WIRES TO RUB TOGETHER. CONSUMER DISCOVERED THAT HARNESS INSULATION IS MADE OF VERY POOR MATERIAL .THE INSULATION BREAKS VERY EASY AT THE TOUCH AND TURNS INTO DUST. THE WHOLE WIRE HARNESS IS IN THE SAME SITUATION. *JB
WHILE DRIVING, MY CAR STALLED OUT SEVERAL TIMES, BUT WAS ABLE TO RESTART A FEW TIMES. IT EVENTUALLY WOULD NOT START AND I WAS IN THE MIDDLE OF NOWHERE, WITH NO PHONE SERVICE, AND HAD A HORRIBLE EXPERIENCE FINDING HELP AFTER HAVING TO PUSH MY CAR OFF THE ROAD. TURNS OUT THE ENGINE WIRING HARNESS FAILED, BIG SURPRISE!!! THIS WHOLE ORDEAL COST ME 1800 DOLLARS ON SOMETHING THAT MB USED TO REPLACE FOR FREE. *NM
THE ELECTRICAL INSULATION OF THE MAIN WIRING HARNESS HAS VIRTUALLY DISINTEGRATED, APPARENTLY FROM THE (NORMAL) HEAT OF THE ENGINE. THE INSULATION LITERALLY FLAKES AWAY IN MY HAND WHEN BEING HANDLED EVEN WITH THE MOST GENTLE TOUCH. THE MANUFACTURER (MERCEDES) CLAIMS THIS IS NOT A PROBLEM DESPITE THE PHYSICAL EVIDENCE. THE COST TO REPLACE THE WIRING HARNESS IS $500+ FOR ONLY THE PART; THE COST OF INSTALLATION IS ALSO IN EXCESS OF $500, THUS COSTING OVER $1,000. THIS IS A CRITICAL SAFETY ISSUE! THE DETERIORATED INSULATION CAUSES INTERMITTE…
DRIVING ON RT 101. SUDDENLY COULD NOT CONTROL ACCELERATION. NEARLY HAD AN ACCIDENT FORCING ANOTHER CAR OFF THE ROAD. TOOK THE CAR TO GERMAN MOTORS-MERCEDES REPAIR AND THEY INDICATED THAT THE ENGINE WIRING HARNESS WAS FALLING APART AND THAT THIS WAS A COMMON PROBLEM FOR THIS MODEL CAR. *NM
FAULTY WIRING IN ENGINE HARNESS RESULTED IN LOSS OF POWER AT SPEED ON A MAJOR INTERSTATE, LUCKILY AT THE TIME I WAS ABLE TO GET OFF THE ROAD SAFELY. IT WAS DETERMINED THAT THE CAR'S CHARGING SYSTEM HAD BEEN SHORTED OUT. STILL WAITING ON OTHER SYSTEM TESTS. THIS IS A KNOWN PROBLEM WITH CERTAIN MERCEDES. WHY ISN'T ANYTHING BEING DONE ABOUT THIS? *TR
DT: THE VEHICLE STALLED WHILE DRIVING. THERE WERE NO ACCIDENTS. WHEN THE CONSUMER TOOK THE VEHICLE TO THE DEALER TO BE REPAIRED THEY THOUGHT IT WAS THE TRANSMISSION. THEY REBUILT THE TRANSMISSION, REPLACED THE STARTER AND THE MAIN WIRING HARNESS THAT GOES INTO THE TRANSMISSION. AFTER THIS IT WOULD NOT REALLY GO ANYWHERE. HE TOOK IT BACK TO DEALER. THEY REPLACED THE SPARK PLUGS, TWO DISTRIBUTORS, TWO FILTER ELEMENTS, FUEL FILTER, ADDED BRAKE FLUID, FUEL INJECTION KIT, AND THEY FLUSHED THE FUEL. THE VEHICLE IS STILL NOT DRIVABLE. *AK
PARKED THE VEHICLE AND PLACED IT IN PARK THEN TURNED IGNITION OFF. BURNING SMELL COMING FROM VEHICLE THEN SMOKE STARTED GOING IN THROUGH VENTS AND SEEMED LIKED IT WAS COMING FROM UNDER THE CAR. THE ELECTRICAL WIRING HARNESS IS CREATING MASS AND THE CAR NEARLY WENT UP IN FLAMES. THE FIRE DEPARTMENT ARRIVED AND WERENT ABLE TO PUT OUT THE SMOKE AS THE SOURCE OF IT WAS NOT IMMEDIATLY DETERMINED. I AM NOT LOOKING AT THOUSANDS OF DOLLARS IN REPAIRS.
1992 MERCEDES BENZ 400E. CONSUMER WRITES IN REGARDS TO SEVERAL RECALL NOTICES RENDERED VEHICLE USELESS. *SMD MERCEDES BENZ WROTE TO THE CONSUMER, STATING THERE WERE NO OUTSTANDING RECALL CAMPAIGNS ON THE VEHICLE. THE CONSUMER REFERENCED RECALL NUMBERS, 92V083000 AND 94V004000. *JB
ENGINE WIRING HARNESS CRACKED, REPLACED AT COST OF $728 @ MILEAGE OF 86,226 ON 10/21/03. VEHICLE HAD BEEN PURCHASED AS MB STARMARK VEHICLE AT ~45,000 MILES. *NM
I WAS DRIVING 80 GOING ON HIGHWAY 696 WHEN THE CAR SUDDENLY DIED. I WAS IN THE LEFT LANE OF A 3 LANE FREEWAY. I HAD ENOUGH TIME TO GET ONTO THE RIGHT SIDE ALONG WITH A FEW ANGRY DRIVERS. IT APPEARS THE WIRE HARNESS WAS TOAST. IT SHORT CIRCUITED AND FRIED THE LH MODULE THAT CONTROLS THE ENGINE. *JB
1992 MERCEDES-BENZ 400E WIRING HARNESS MULTIPLE FAILURES. REPLACED ENGINE WIRING HARNESS SHORTLY AFTER I PURCHASED THIS CAR (USED) IN 2005 DUE TO DETERIORATION OF INSULATION FROM THE WIRES. I WAS TOLD AT THE TIME THAT THIS IS A COMMON PROBLEM WITH THIS ERA OF MB DUE TO SOME PLANNED OBSOLESCENCE OR TARGETED SELF-DESTRUCTION BY THE MANUFACTURER. TODAY I AM TOLD THAT I NEED TO REPLACE THE WIRING HARNESS LEADING TO THE STARTER MOTOR FOR THE EXACT SAME REASON. THESE ARE EXPENSIVE PARTS, ONLY AVAILABLE FROM THE MANUFACTURER AND REQUIRE EX…
THE ENGINE / FUEL INJECTION WIRING HARNESS OF MY 1992 MERCEDES-BENZ 400E (145,000 MILES), HAS CRACKED INSULATION THROUGHOUT AND IS BEGINNING TO SHORT OUT WITH THE RISK OF CAUSING DANGEROUS ENGINE MALFUNCTION AND EVEN FIRE INSIDE MY ENGINE COMPARTMENT. *TR
THE CHECK ENGINE LIGHT CAME ON AND BEFORE I COULD PULL OVER THERE WAS SMOKE COMING FROM UNDER THE HOOD. WHEN I OPENED THE HOOD THE AIR CLEANER ASSEMBLY WAS MELTED THROUGH AND SOME FLAME WAS STILL GLOWING IN THE DRIVER SIDE AIR FILTER. THE UPPER ENGINE WIRING HARNESS WAS CHARRED ALONG THE DRIVER SIDE AND THE CONNECTOR TO THE CAM ACTUATOR HAD DISINTEGRATED. AFTER GETTING THE CAR TOWED HOME I FOLLOWED THE HARNESS BACK TO THE AMP CONNECTOR AND ALL OF THE INSULATION ON THE WIRES HAD COMPLETELY DEGRADED TO A POWDER. I ALSO CHECKED THE WIRES ON TH…
THE ENGINE WIRING HARNESS IN MY 1992 MERCEDES 400E HAS DETERIORATED AND IS CAUSING SHORTS THROUGHOUT THE CAR. THE GAUGES DO NOT WORK AND THE THROTTLE BODY IS FAILING. I HAVE HAD THE CAR TOWED TWICE BECAUSE OF THIS AND THE REPAIR IS IN THE THOUSANDS OF DOLLARS. THIS SHOULD BE A RECALL AND REPLACED DUE TO THE SAFETY HAZARD. MY CAR STALLED IN THE MIDDLE OF THE ROAD. *JB
TL*THE CONTACT OWNS A 1992 MERCEDES BENZ 400E. WHILE DRIVING 35 MPH THE VEHICLE SHUT OFF ON THE HIGHWAY. HE RESTARTED THE VEHICLE AND DEPRESSED THE ACCELERATOR PEDAL, CAUSING THE VEHICLE TO IDLE. THE DEALER STATED THAT THE VEHICLE NEEDED A NEW WIRING HARNESS, AND AN AIT TEMP SENSOR. THE DEALER STATED THAT THE BEARING HARNESS WAS DEFECTED AND METAL WAS VISIBLE. THE WIRES INSIDE WERE DETERIORATING. THE VEHICLE WAS TAKEN TO THE DEALER ON APRIL 6TH, 8TH, 9TH, AND 18TH, AND THE FAILURE REMAINED. THE CURRENT MILEAGE IS 132,000, AND FAILURE MIL…
THE WIRING HARNESS ON MY 1992 400E HAS DISINTEGRATED, AS I'VE READ TO BE COMMON OF THE MERCEDES OF THE EARLY 1990'S. MY CAR SHUDDERS DRAMATICALLY WHEN IDLING, AND ALTERNATES BETWEEN PERIODS OF SLOW/NO ACCELERATION TO UNEXPECTED LURCHING FORWARD. *TR
THE CHECK ENGINE LIGHT CAME ON AND BEFORE I COULD PULL OVER THERE WAS SMOKE COMING FROM UNDER THE HOOD. WHEN I OPENED THE HOOD THE AIR CLEANER ASSEMBLY WAS MELTED THROUGH AND SOME FLAME WAS STILL GLOWING IN THE DRIVER SIDE AIR FILTER. THE UPPER ENGINE WIRING HARNESS WAS CHARRED ALONG THE DRIVER SIDE AND THE CONNECTOR TO THE CAM ACTUATOR HAD DISINTEGRATED. AFTER GETTING THE CAR TOWED HOME I FOLLOWED THE HARNESS BACK TO THE AMP CONNECTOR AND ALL OF THE INSULATION ON THE WIRES HAD COMPLETELY DEGRADED TO A POWDER. I ALSO CHECKED THE WIRES ON TH…
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
Monthly complaint and recall timeline
Month
Complaints
Campaigns announced
Examples
2024-11
0
None
No examples available for this selection.
2024-12
0
None
No examples available for this selection.
2025-01
0
None
No examples available for this selection.
2025-02
0
None
No examples available for this selection.
2025-03
0
None
No examples available for this selection.
2025-04
0
None
No examples available for this selection.
2025-05
0
None
No examples available for this selection.
2025-06
0
None
No examples available for this selection.
2025-07
0
None
No examples available for this selection.
2025-08
0
None
No examples available for this selection.
2025-09
0
None
No examples available for this selection.
2025-10
0
None
No examples available for this selection.
2025-11
0
None
No examples available for this selection.
2025-12
0
None
No examples available for this selection.
2026-01
0
None
No examples available for this selection.
2026-02
0
None
No examples available for this selection.
2026-03
0
None
No examples available for this selection.
2026-04
0
None
No examples available for this selection.
2026-05
0
None
No examples available for this selection.
2026-06
0
None
No examples available for this selection.
2026-07
0
None
No examples available for this selection.
2026-08
0
None
No examples available for this selection.
2026-09
0
None
No examples available for this selection.
2026-10 (partial)
0
None
No examples available for this selection.
Emerging complaint spikes
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
1992: 0 complaints · 1993: 1 complaints
Equal observation windows
Model year
Through age 0
Through age 1
Through age 2
1992
0
0
0
1993
0
0
1
Date coverage across each selected cohort
Date basis for all complaints in selected model years
Year
Incident dates used
Filing date fallbacks
Excluded dates
1992
19
0
0
1993
19
0
0
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
Component co-occurrence matrix
Component
Electrical System:Wiring:Front Underhood
Electrical System
Electrical System:Wiring
Engine And Engine Cooling
Power Train
Service Brakes, Hydraulic
Vehicle Speed Control
Electrical System:Wiring:Front Underhood
—
0
0
0
0
0
0
Electrical System
0
—
0
0
1ODI 10604618 · 135,905 mi
THE CHECK ENGINE LIGHT CAME ON AND BEFORE I COULD PULL OVER THERE WAS SMOKE COMING FROM UNDER THE HOOD. WHEN I OPENED THE HOOD THE AIR CLEANER ASSEMBLY WAS MELTED THROUGH AND SOME FLAME WAS STILL GLOWING IN THE DRIVER SIDE AIR FILTER. THE UPPER ENGINE WIRING HARNESS WAS CHARRED ALONG THE DRIVER SIDE AND THE CONNECTOR TO THE CAM ACTUATOR HAD DISINTEGRATED. AFTER GETTING THE CAR TOWED HOME I FOLLOWED THE HARNESS BACK TO THE AMP CONNECTOR AND ALL OF THE INSULATION ON THE WIRES HAD COMPLETELY DEGRADED TO A POWDER. I ALSO CHECKED THE WIRES ON TH…
1992 MERCEDES BENZ 400E. CONSUMER WRITES IN REGARDS TO SEVERAL RECALL NOTICES RENDERED VEHICLE USELESS. *SMD MERCEDES BENZ WROTE TO THE CONSUMER, STATING THERE WERE NO OUTSTANDING RECALL CAMPAIGNS ON THE VEHICLE. THE CONSUMER REFERENCED RECALL NUMBERS, 92V083000 AND 94V004000. *JB
THE CHECK ENGINE LIGHT CAME ON AND BEFORE I COULD PULL OVER THERE WAS SMOKE COMING FROM UNDER THE HOOD. WHEN I OPENED THE HOOD THE AIR CLEANER ASSEMBLY WAS MELTED THROUGH AND SOME FLAME WAS STILL GLOWING IN THE DRIVER SIDE AIR FILTER. THE UPPER ENGINE WIRING HARNESS WAS CHARRED ALONG THE DRIVER SIDE AND THE CONNECTOR TO THE CAM ACTUATOR HAD DISINTEGRATED. AFTER GETTING THE CAR TOWED HOME I FOLLOWED THE HARNESS BACK TO THE AMP CONNECTOR AND ALL OF THE INSULATION ON THE WIRES HAD COMPLETELY DEGRADED TO A POWDER. I ALSO CHECKED THE WIRES ON TH…
1992 MERCEDES BENZ 400E. CONSUMER WRITES IN REGARDS TO SEVERAL RECALL NOTICES RENDERED VEHICLE USELESS. *SMD MERCEDES BENZ WROTE TO THE CONSUMER, STATING THERE WERE NO OUTSTANDING RECALL CAMPAIGNS ON THE VEHICLE. THE CONSUMER REFERENCED RECALL NUMBERS, 92V083000 AND 94V004000. *JB
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
3 patterns with matching reports.
Hard or delayed shifting
1 mentions · 5.3% of complaints
Median mileage: 95,000 mi (1 usable records).
ODI 10222346 · 95,000 mi
THE WIRING HARNESS ON MY 1992 400E HAS DISINTEGRATED, AS I'VE READ TO BE COMMON OF THE MERCEDES OF THE EARLY 1990'S. MY CAR SHUDDERS DRAMATICALLY WHEN IDLING, AND ALTERNATES BETWEEN PERIODS OF SLOW/NO ACCELERATION TO UNEXPECTED LURCHING FORWARD. *TR
THE ENGINE WIRING HARNESS IN MY 1992 MERCEDES 400E HAS DETERIORATED AND IS CAUSING SHORTS THROUGHOUT THE CAR. THE GAUGES DO NOT WORK AND THE THROTTLE BODY IS FAILING. I HAVE HAD THE CAR TOWED TWICE BECAUSE OF THIS AND THE REPAIR IS IN THE THOUSANDS OF DOLLARS. THIS SHOULD BE A RECALL AND REPLACED DUE TO THE SAFETY HAZARD. MY CAR STALLED IN THE MIDDLE OF THE ROAD. *JB
Matching rule\b(stall\w*|loss of power|lost power|engine shut\w* off)\b
Warning lights and dashboard alerts
1 mentions · 5.3% of complaints
Median mileage: 135,905 mi (1 usable records).
ODI 10604618 · 135,905 mi
THE CHECK ENGINE LIGHT CAME ON AND BEFORE I COULD PULL OVER THERE WAS SMOKE COMING FROM UNDER THE HOOD. WHEN I OPENED THE HOOD THE AIR CLEANER ASSEMBLY WAS MELTED THROUGH AND SOME FLAME WAS STILL GLOWING IN THE DRIVER SIDE AIR FILTER. THE UPPER ENGINE WIRING HARNESS WAS CHARRED ALONG THE DRIVER SIDE AND THE CONNECTOR TO THE CAM ACTUATOR HAD DISINTEGRATED. AFTER GETTING THE CAR TOWED HOME I FOLLOWED THE HARNESS BACK TO THE AMP CONNECTOR AND ALL OF THE INSULATION ON THE WIRES HAD COMPLETELY DEGRADED TO A POWDER. I ALSO CHECKED THE WIRES ON TH…