NHTSA Data Explorer

Mercedes-Benz S420

Data refreshed May 30, 2026

Select a model year to filter results to that year of the Mercedes-Benz S420.

Complaints

292

Active records

Recalls

13

Active records

TSBs

58

Active records

Filing history

Monthly totals over the last 20 years. Click a legend item to show or hide that series.

Reported severity

Based on consumer complaints filed since 2000. Recalls and TSBs do not include severity data.

Deaths

0

Injuries

10

Crashes

9

Fires

8

Top reported issues — Mercedes-Benz S420

Click a category to expand its values.

Condition issue

67

Reporting mechanism

59

Operating state

58

Safety restraint issue

33

Ride/handling behavior

30

Electrical issue

27

Engine behavior

24

Access/entry issue

16

Safety restraint behavior

15

Thermal issue

15

Fluid issue

12

Performance issue

12

Lighting behavior

10

Powering on/off behavior

9

Steering behavior

9

Transmission/drivetrain behavior

9

Braking behavior

8

Smell

8

Driver assistance issue

7

HVAC behavior

7

Noise

4

Starting behavior

4

Infotainment behavior

3

Vibration/harshness

3

Recent change

2

Recent filings

The 10 most recent filings for each type.

1999 MERCEDES BENZ S420

Filed Sep 3, 2020


TL* THE CONTACT OWNS A 1999 MERCEDES BENZ S420. THE CONTACT STATED THAT WHILE ATTEMPTING TO EXIT THE VEHICLE, THE ELECTRICAL AND VACUUM SYSTEM BECAME INOPERABLE AND HE WAS UNABLE TO OPEN THE DOORS. THE CONTACT STATED THAT HE WAS LOCKED INSIDE THE VEHICLE AND WAS NOT ABLE TO EXIT THE VEHICLE. THE CONTACT STATED THAT HE EXITED THE VEHICLE THROUGH THE PASSENGER'S SIDE WINDOW. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF DANBURY (100 FEDERAL RD, DANBURY, CT 06810) AND WAS DIAGNOSED THAT THE VACUUM…

1996 MERCEDES BENZ S420

Filed Jul 10, 2019


TL* THE CONTACT OWNS A 1996 MERCEDES-BENZ S420. WHILE DRIVING 70 MPH, THE SRS, VSR, TIRE AND OTHER UNKNOWN INDICATORS ILLUMINATED. THE CONTACT COASTED THE VEHICLE TO THE SIDE OF THE ROAD AND POWERED OFF THE ENGINE. THE VEHICLE WAS RESTARTED AND WAS ABLE TO DRIVE NORMALLY. WHILE DRIVING DOWN THE ROAD, THE FAILURES RECURRED A FEW TIMES. THE CONTACT CALLED AAA AND THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE. ON ANOTHER OCCASION, THE STEERING WHEEL BECAME DIFFICULT TO TURN, ONE OF THE TIRES…

1999 MERCEDES BENZ S420

Filed Aug 31, 2017


THE AREA THAT HOLDS THE BRAKE LIGHTS KEEPS MELTING I HAVE REPLACED THEM TWICE , SEAT BELTS LAG AND DOT WORK I HAVE HAD SEVERAL PROBLEMS WITH STABILIZATION

1995 MERCEDES BENZ S420

Filed Jan 30, 2017


ELECTRICAL WIRING HARNESS USING SOY BASED INSULATION DEGRADES THEREBY ALLOWING WIRES TO SPONTANEOUS AND/ OR INTERMITTENT SHORTS. THIS HAS CAUSED EXTREMELY DANGEROUS DRIVING SITUATIONS. VERY DIFFICULT TO TROUBLESHOOT UNLESS AND UNTIL ONE DISCOVERS INSULATION FAILURE. THIS HAS BEEN AND IS WIDELY KNOWN TO BE A PROBLEM WITH THIS ERA OF CARS. EXTREMELY BAD ENGINEERING DECISIONS WERE MADE. VERY SERIOUS AND POTENTIALLY DANGEROUS CONDITIONS. MERCEDES SHOULD BE HELD ACCOUNTABLE FOR…

1995 MERCEDES BENZ S420

Filed Sep 1, 2016


THROTTLE BODY WIRE HARNESS WENT BAD AND WAS ON INTERSTATE AND COULD NOT DO SPEED LIMIT AND NEARLY GOT DEMOLISHED BY A SEMI TRACTOR TRAILER. AFTER A HORRIBLE EXPENSE I NOW FIND OUT THE WIRING HARNESS FOR THE CAR IS BAD AS WELL. WELL DONE MERCEDES BENZ YOU HAVE ENDANGERED MY FAMILY'S LIVES WITH YOUR SUB STANDARD BUSINESS PRACTICE. YOU SHOULD BE FORCED TO RECALL AND REPAIR ALL SAFETY ISSUES.

1995 MERCEDES BENZ S420

Filed Nov 27, 2015


I HAVE TAKEN MY 95 S420 TO TWO DEALER LOCATIONS BECAUSE OF THE DISINTEGRATING ENGINE WIRING HARNESS. THEY ALL CLAIM THAT THEY NEVER HEARD OF IT. THE DEALER IN NANUET, NY TELLS ME THAT THEY CANNOT HELP ME BECAUSE I DIDN'T HAVE EVERY MAINTENANCE DONE THROUGH THEIR DEALERSHIP. I MUST SAY, FROM ALL THE DEALERSHIPS I'VE BEEN TO... MERCEDES DEALERSHIPS TREAT PEOPLE WITH OLDER CARS LIKE GARBAGE. ANYWAYS, THE PROBLEM STARTED WHEN THE CAR STARTED TO RUN ROUGH. I WAS DRIVING HOME AND THE CAR…

1995 MERCEDES BENZ S420

Filed Jan 30, 2015


TL*THE CONTACT OWNS A 1996 MERCEDES BENZ S420 (N/A). THE CONTACT STATED THAT THE KEY FOB FAILED TO UNLOCK THE DOORS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 88,000. UPDATED 03/30/15*LJ UPDATED 10/20/2015*JS

1995 MERCEDES BENZ S420

Filed Oct 8, 2014


A/C QUIT WORKING. TOOK TO THE MERCEDES DEALER. WAS NOTIFIED OF VAPOR CORE FAILURE AND TOLD IT IS MOST COMMON ON ANY MILEAGE OF THIS MODEL. COST $3500.00 IF IT IS MOST COMMON IT SHOULD HAVE BEEN A RECALL ON IT. COMPANY KNEW ABOUT THE PROBLEM BUT DID NOTHING TO CORRECT IT.

1996 MERCEDES BENZ S CLASS

Filed May 6, 2014


TL* THE CONTACT OWNS A 1996 MERCEDES S420. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE POWER STEERING SUDDENLY MALFUNCTIONED CAUSING THE VEHICLE TO STEER TO THE LEFT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DIAGNOSED THAT A CONNECTOR FROM THE TRANSMISSION TO THE ELECTRONIC CONTROL MODULE HAD FAILED CAUSING TRANSMISSION FLUID TO FLOOD THE CONTROL MODULE. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT NOTIFIED OF THE DEFECT. THE FAILURE MILEAGE WAS…

2003 MERCEDES BENZ S CLASS

Filed Apr 1, 2014


THE SRS SYSTEM (AIRBAGS) HAVE BEEN DEEMED INOPERABLE BY THE DEALER AND MAY EITHER DEPLOY AT ANY TIME OR NOT DEPLOY AT ALL IN A COLLISION. THIS IS DUE TO A DEFECTIVE SEATBELT BUCKLE AND A DEFECTIVE PASSENGER RECOGNITION SENSOR PAD LOCATED IN THE FRONT PASSENGER SEAT WHICH DISABLES/ENABLES THE AIRBAGS FUNCTIONALITY. BOTH A VERY COMMON DEFECT IN THE 2000 TO 2006 MODEL YEAR MERCEDES BENZ S CLASS VEHICLES. THE SEATBELT BUCKLE CONTAINS A SENSOR THAT EVENTUALLY FAILS FOR NO APPARENT REASON OR WARNING…

Data sourced from NHTSA's public datasets. Issue classifications are generated by Repair Surge. About this data.

Updated May 30, 2026. Refreshed nightly.