Total Complaints
3 filings
MERCEDES-BENZ 420 · model year
1990 MERCEDES-BENZ 420
3 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1990MERCEDES-BENZ420 carries 3 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1990 420 is equipment with 2 filings, followed by child seat:tether: connector/clip (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 1990 420. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
3
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| EQUIPMENT | 2 |
| CHILD SEAT:TETHER: CONNECTOR/CLIP | 1 |
Recent Complaints
20051109CHILD SEAT:TETHER: CONNECTOR/CLIP
NO TETHER ANCHORAGES ARE PRESENT ON THIS VEHICLE AND NO TETHER ANCHORAGES HAVE EVER BEEN PRESENT ON THIS VEHICLE. THE OWNER'S MANUAL AND MBNA SERVICE BULLETINS STATE THAT THIS VEHICLE IS EQUIPPED WITH TETHER ANCHORAGES FOR USE WITH CHILD RESTRAINTS THAT HAVE A TOP TETHER STRAP. TETHER ANCHORAGES ARE NEEDED TO PROPERLY ATTACH MY FORWARD-FACING CHILD RESTRAINT. MERCEDES-BENZ-USA AND MERCEDES-BENZ OF EUGENE, OR STATE THAT THIS VEHICLE DID NOT COME EQUIPPED WITH THE TETHER ANCHORAGES. WERE/ARE TETHER ANCHORAGES REQUIRED TO BE ATTACHED TO THIS VEHICLE FOR THIS VEHICLE TO BE SOLD IN THE USA AT TIME OF SALE PER FEDERAL STANDARDS AND/OR BECAUSE THE OWNER'S MANUAL AND SERVICE BULLETINS STATE THAT THIS VEHICLE IS EQUIPPED WITH TETHER ANCHORAGES? THIS IS A VERY IMPORTANT SAFETY ISSUE. *NM
20051031EQUIPMENT
ON OCT. 20, 2005, I ASKED MERCEDES BENZ OF USA AND MERCEDES BENZ OF EUGENE(OR), TO SHOW/TELL ME SPECIFICALLY WHERE THE TETHER ANCHORS ARE IN MY 1990 420 SEL MERCEDES. ALSO,ON OCT. 21, 2005, I FILED A SIMILAR COMPLAINT, BY EMAIL, AT THIS SITE OF NHTSA. TO DATE, I HAVE RECEIVED NO RESPONSE FROM MBNA OF USA. ALSO, MB OF EUGENE HAS NOT, APPARENTLY, BEEN ABLE TO FIGURE OUT HOW TO GET OR ATTACH THE ANCHORS THAT ARE TO HAVE BEEN ALREADY INSTALLED IN THE VEHICLE, ACCORDING TO THE "OWNER'S MANUAL". MY UNDERSTANDING IS THAT THE ANCHORS WERE/ARE REQUIRED FOR THIS VEHICLE TO BE IMPORTED AND SOLD IN THE USA. APPARENTLY, THERE IS A SERVICE BULLETIN MBNA 91/4B PERTAINING TO THIS ISSUE. I NEED THE EVENFLO TRIUMPH SEAT TO BE PROPERLY INSTALLED FOR THE SAFETY OF MY GRANDDAUGHTER. PLEASE INFORM ME OF WHAT TO DO FOR THE SAFETY OF MY GRANDDAUGHTER. *JB
20051021EQUIPMENT
THE OWNER'S MANUAL FOR MY 1990 420 SEL, ON PAGE 46, STATES:"THIS VEHICLE IS EQUIPPED WITH TETHER ANCHORAGES FOR USE WITH CHILD RESTRAINTS THAT HAVE A TOP TETHER STRAP. CONSULT YOUR AUTHORIZED MERCEDES-BENZ DEALER FOR THE EXACT LOCATION OF THESE ANCHORAGES." AFTER REPEATED PHONE CALLS, EMAILS AND FAXES AND A VISIT TO THE DEALER, NEITHER THE EUGENE DEALER, MERCEDES BENZ OF EUGENE, OR THE MERCEDES-BENZ OF USA, HAVE BEEN ABLE TO TELL/SHOW ME THE EXACT LOCATION OF THE ANCHORAGES. ALSO, THE SERVICE REPRESENTATIVE AT MERCEDES BENZ OF EUGENE AND THE CUSTOMER SERVICE REPRESENTATIVE AT MERCEDES-BENZ OF USA TOLD ME THAT THE 1990 420 SEL DOES NOT HAVE THE ANCHORAGES. ON MY OWN RESEARCH, I DISCOVERED SERVICE BULLETIN # 91/4B THAT INDICATES INFORMATION ABOUT THE ANCHORAGES WHICH I REPORTED TO MERCEDES BENZ OF EUGENE. THE ANCHORAGES APPEAR TO NOT BE PRESENT ON MY 1990 420 SEL. I NEED THEM TO PROPERLY ATTACH AN EVENFLO TRIUMPH CAR SEAT. *JB
Compare 1990MERCEDES-BENZ420 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1990 MERCEDES-BENZ 420 have?▼
The 1990 MERCEDES-BENZ 420 has 3 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1990 MERCEDES-BENZ 420?▼
The most-complained component for the 1990 MERCEDES-BENZ 420 is EQUIPMENT with 2 complaints. Other frequently reported areas include CHILD SEAT:TETHER: CONNECTOR/CLIP.
Is the 1990 MERCEDES-BENZ 420 safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.