2016 MERCEDES BENZ C 300

What owners reported to NHTSA, ranked by how often and how seriously.

This is complaint data, not a random sample.

It only includes owners who chose to file a federal complaint, so it over-represents dramatic and safety-related problems and under-represents minor issues an owner just had fixed without reporting. Read this as what NHTSA complainants report most, not as this vehicle's true failure rate. Full methodology.

Component ranking

  1. #1

    engine internal

    1 stranded, 32 unsafe, 1 broken, 9 annoyance

    43
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=4)

    • " MY 2016 C300 4MATIC, WHICH HAS BEEN SERVICED EXCEPTIONALLY WELL, TURNED 57,000 MILES (7K MILES OUTSIDE OF WARRANTY), HAD THE CHECK ENGINE LIGHT TURN ON. I WENT TO MY MECHANIC, WHO HAS A STATE OF THE ART DIAGNOSTIC UNIT, AND IT WAS DIAGNOSED AS CODE P052E WH…"~57,000 mi, complaint #1738330
  2. #2

    fuel tank and lines

    34 unsafe, 3 annoyance

    37
    incidents

    Commonly reported, insufficient mileage data - n=16, median 65,000 mi, no reliable range below 25 reports.

    • "TL* THE CONTACT OWNS A 2016 MERCEDES BENZ C300. THE CONTACT STATED UPON ENTERING THE VEHICLE, THERE WAS AN ABNORMAL FUEL ODOR IN THE CABIN OF THE VEHICLE. THE VEHICLE WAS TAKEN TO PARK PLACE MOTORCARS MERCEDES-BENZ GRAPEVINE LOCATED AT (1300 TEXAN TRAIL, GRAPE…"~17,000 mi, complaint #1651382
    • "HOSE CLAMPS ATTACHING THE HIGH PRESSURE FUEL LINE LEADING FROM THE FIREWALL-MOUNTED FUEL PUMP TO THE CENTRAL FUEL RAIL FAILED TO MAINTAIN A TIGHT CONNECTION. THIS LEADS TO FUEL LEAKING PAST THE HOSE CLAMP CONNECTION INTO THE OPEN ENGINE COMPARTMENT DURING COLD…"~33,100 mi, complaint #1629868
    • "TALK TO DEALER VEHICLE HAS FUEL LINE LEAK NOT COVERED UNDER WARRANTY JUST PURCHASED VEHICLE WITHIN 30 DAYS OF NOTICING THIS ISSUE AND I BELIEVE IT SHOULD BE RECALLED SAFETY ISSUES FUEL SMELL AND COULD CAUSE FIRE"~50,000 mi, complaint #1742630
    • "THERE WAS AN ODOR OF FUEL INSIDE THE CABIN. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, AND THE TECHNICIAN INFORMED ME THAT THERE WAS AN STRONG ODOR OF FUEL WHEN HE LIFTED THE HOOD AND ADVISED THE CONTACT TO TAKE THE VEHICLE TO A MERCEDES DEALER BECAUSE…"~85,000 mi, complaint #1715804
    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated after starting the vehicle with the heater running, there was an abnormally strong gasoline odor coming from the vehicle. The vehicle was not diagnosed nor repaired. The manufacturer was not contac…"~90,000 mi, complaint #1855052
  3. #3

    sunroof

    29 unsafe, 1 broken, 2 annoyance

    32
    incidents

    Commonly reported, insufficient mileage data - n=13, median 45,000 mi, no reliable range below 25 reports.

    • "I WAS DRIVING DOWN THE FREEWAY AT APPROXIMATELY 65 MPH AND THE PANORAMIC SUNROOF ON MY MERCEDES C300 EXPLODED. I SAY "EXPLODED" BECAUSE NOTHING STRUCK THE GLASS AND MOST OF THE GLASS BLEW OUT AND OFF THE CAR, NOT IN. THE SUNROOF WAS CLOSED AT THE TIME, SO TH…"~17,000 mi, complaint #1427115
    • "TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ C300. WHILE DRIVING APPROXIMATELY 65 MPH, A LOUD NOISE SUDDENLY OCCURRED. THE DRIVER PULLED OVER AND DISCOVERED THAT THE SUN ROOF HAD ERRONEOUSLY SHATTERED. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO THE MERCEDES…"~34,000 mi, complaint #1529632
    • "HEARD SOMETHING CRACK AND THE FOUND LATER PLASTIC PIECES OF THE SHOE ON THE RIGHT SIDE ON THE SUNROOF IN THE RAIL OF THE SUNROOF. IT WAS THE RAIL GUIDE SHOE. THE MECHANIC ADVISED ME THE ENTIRE ROOF WOULD NEED TO COME UP, INCLUDING HEADLINER. HE ALSO SAID YOU'…"~40,600 mi, complaint #1659087
    • "GLASS PIECE IN FRONT OF SUNROOF OF PANORAMA ROOF FLEW DETACHED AND FLEW OFF WHILE DRIVING. I WAS DRIVING ON FREEWAY ABOUT 80 MILES PER HOUR ON A STRAIGHT STRETCH. IT WAS NOT HIT BY ANYTHING. JUST THE WIND. COST TO REPAIR $2178 AT MB AUTHORIZED DEALER."~45,000 mi, complaint #1704743
    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated the sunroof failed to close and was stuck open. The vehicle was taken to dealer and was diagnosed that the sunroof rail, motor and rods needed to be replaced. The vehicle was not repaired. The cont…"~82,000 mi, complaint #1805637
  4. #4

    engine oil consumption

    11 unsafe, 1 broken, 4 annoyance

    16
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "- CRANK CASE VENT VALVE malfunctioned, it was available for inspection upon request with fee - It made oil burning smell - The problem has been confirmed by a dealer and replaced with an expensive fee - Engine check light was on"complaint #1808376
    • "While driving the check engine light came on. The inside of the car started to smell like gas. A diagnostic check was performed at the Mercedes dealership and it was determined that there were 2 faults: low boost signal & ME control unit this was due to oil le…"complaint #1818443
    • "Check Engine light came on. Upon running the scan from three different reputed repair shops, they show same P052e Positive Crankcase ventilation valve replace message. It first came two months back, reset the code but it still came up."complaint #1825215
    • "Check engine light came in so I took it to a local auto shop. They ran the diagnostics and the code that appeared was P052E(Positive Crankcase Ventilation Regulation Valve Performance). "complaint #1828184
    • "Car smells like gasoline especially when the s/c or heater is in use."complaint #1860401
  5. #5

    engine cooling

    7 unsafe, 8 annoyance

    15
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Check engine light and error code P052E - Positive Crankcase Ventilation regulator Valve Performance. Within a year of having the same error code repaired using warranty, I'm again getting the same error code. This is a very expensive repair costing upwards…"complaint #1811256
    • "CEL light- with code P052e positive crankcase ventilation regularly valve. Vehicle only has 62,000 miles"complaint #1828529
    • "The check engine light came on. I pulled the code and it was P052E, and requires the replacement of the crankcase ventilation system. I am told that this happens on virtually all C300s and (and maybe the GLC300 also). I think this should be recalled."complaint #1833785
    • "(P052e) positive crankcase ventilation regularly valve "complaint #1853846
    • "2016 MB C300 41000 miles. Check engine light went on. Autozone code reader said p052e positive crankcase ventilationregulation value performance."complaint #1860512
  6. #6

    engine stall or no start

    5 stranded, 6 unsafe

    11
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=9)

    • "WHEN TRAVELING AT SPEED OVER 65 , CAR WILL BEGIN SHAKING VIOLENTLY AND HESITATION OCCURS. THIS IS ERRATIC-3 INSTANCES. TERRIFYING! ANOTHER PROBLEM -STARTED CAR BEGAN HESITATING ,UNABLE TO GO OVER 30MPH AND SMELLED A BURNING ODOR. COULD NOT DRIVE CAR.THE CAR H…"~2,000 mi, complaint #1360682
    • "ON OCT 14TH AT NIGHT CAR WAS DRIVEN IN HEAVY RAIN OFF INTERSTATE I5 OFF RAMP TO EXIT INTERSTATE. THERE WERE CARS BOTH IN FRONT AND BEHIND US EXITING AND UPON DRIVING FURTHER NOTICED THERE WAS STANDING WATER. OTHER CARS WERE MAKING IT THROUGH SLOWLY, THERE WAS…"~7,900 mi, complaint #1325958
    • " TL* THE CONTACT OWNS A 2016 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING IN INCLEMENT WEATHER, THE VEHICLE BECAME STRANDED IN HIGH STANDING WATER AND STALLED. THE CONTACT STATED THAT HER SIBLINGS WERE ABLE TO PUSH THE VEHICLE OUT OF THE HIGH STA…"~10,000 mi, complaint #1402332
    • "2016 C300 4MATIC AT ABOUT 50K MILES, CHECK ENGINE LIGHT CAME ON AND THEN AS I WAS DRIVING ON THE FREEWAY THE CAR JUST STOPPED ACCELERATING IN THE MIDDLE OF THE FREEWAY AND HAD TO TAKE MY CAR TO THE SIDE AND TOWED IT TO THE DEALER IN WEST COVINA. LUCKILY THERE…"~52,000 mi, complaint #1720179
    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated that while at a stoplight, the energy saver START/STOP feature engaged, but the vehicle stalled and failed to restart. There were no warning lights illuminated. The vehicle was towed to an independ…"~56,000 mi, complaint #2112778
  7. #7

    control module

    6 unsafe, 3 annoyance

    9
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated that after turning off the vehicle and locking the doors; after a while, the vehicle would independently unlock the doors and then start up without driver input. The vehicle was taken to the dealer…"~43,000 mi, complaint #1817106
  8. #8

    glass and windshield

    9 unsafe

    9
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=4)

    • "TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ C300. WHILE DRIVING 70 MPH, THE PANORAMIC SUN ROOF EXPLODED. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO A LOCAL DEALER (MERCEDES-BENZ OF LAGUNA NIGUEL ([REDACTED ADDRESS], LAGUNA NIGUEL, CA 92877) WHERE IT WAS DI…"~10,000 mi, complaint #1430539
    • "ON OCTOBER 15, 2019 AND ON JULY 1, 2020 THE GLASS PANEL WHICH IS LOCATED IN FRONT OF THE PANORAMIC SUNROOF BLEW OFF THE CAR WHILE DRIVING ON THE HIGHWAY. THIS PIECE OF GLASS DOES NOT MOVE AND BECAME A DANGEROUS PROJECTILE ENDANGERING OTHER VEHICLES. I WOULD…"~35,012 mi, complaint #1674494
    • "WHILE DRIVING ON THE HIGHWAY, I HEARD A LOUD NOISE THAT, ON FIRST IMPRESSION, LED ME TO BELIEVE SOMEONE FIRED A GUNSHOT AT AND STRUCK MY VEHICLE. UPON LOOKING UP, I IMMEDIATELY NOTICED IT WAS NOT A GUNSHOT BUT INSTEAD THE GLASS TO THE FRONT PORTION OF MY PANO…"~40,000 mi, complaint #1717758
  9. #9

    evap system

    7 unsafe, 1 annoyance

    8
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Failure in the performance of the Crankcase Ventilation Regulator valve, research online indicates this is a very common issue especially in w205s. Mercedes has omitted this from their gasoline powered, emissions control warranty, but is listed under the BLUte…"complaint #1814699
    • "I have owned the vehicle for only about 4 months. My wife took the car out for a short errand and returned to tell me that the engine light was on. I took the vehicle to AutoZone and had the code ran on their diagnostic computer and it returned a P052E code fo…"complaint #1860573
    • "Crankcase Ventilation Valve malfunction at under 50k. Check engine light is on and I took it into the shop after gas fumes were coming into the car through the ventilation system. I was informed that has been an ongoing issue with Mercedes and I was referred…"complaint #1869638
    • "Check engine light P052E, PVC valve. Dealer wants $2,500 for this repair and people are complaining that around 30k-50k it does it. Thats ridiculous. My dealer said its a common issue but Mercedes is not issuing a recall. "complaint #1898810
    • "Power Train System - P052E Positive Crankcase Ventilation Regulator Valve Indicates a fault in the Positive Crankcase Ventilation Regulator Valve. I repaired my car for the same issue in 2019 January and it failed again in 2024 January. It costs $2000 to repa…"complaint #1961173
  10. #10

    other

    5 unsafe, 3 annoyance

    8
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=6)

    • "TAKATA RECALL NHTSA RECALL NUMBER 17V114 : PURCHASE THE VEHICLE ON DECEMBER OF 2016, WE GOT A RECALL LETTER IN MARCH OF 2017 LETTING US KNOW OF THE RECALL BUT WAS NOTIFY THAT THE PART IS NOT AVAILABLE FOR REPAIR TILL AUGUST OF 2017 . ON AUGUST 05 THE CAR CAU…"~5,600 mi, complaint #1405723
    • "PLASTIC PANEL BETWEEN WINDSHIELD AND PANORAMIC SUNROOF DETACHES. ADHESIVE DEGRADES OVER TIME CAUSING PANEL TO NOT BOND WITH THE BODY."~53,000 mi, complaint #1746230
  11. #11

    airbag system

    6 unsafe

    6
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "TL* THE CONTACT OWNS A 2016 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE PARKED IN A PARKING LOT AND INSIDE OF THE VEHICLE, ANOTHER VEHICLE REAR ENDED THE VEHICLE AT 60 MPH CAUSING THE CONTACT TO CRASH INTO THE PARKING CURB AND THE VEHICLE THAT WAS PARKED…"~30,000 mi, complaint #1595486
    • "THE CAR HAS A STRONG GAS SMELL INSIDE THE CABIN AFTER FIRST START COLD,AND ALSO SSECOND COLD START. THE PASSENGER AIR BAG ON MESSAGE CONSTANTLY COMES ON."~50,000 mi, complaint #1639087
  12. #12

    fuel pump

    4 unsafe

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated while driving 45-60 MPH, the vehicle began to stall. The contact depressed the accelerator pedal several times but the vehicle failed to respond. The vehicle stalled. The contact was able to veer t…"~61,000 mi, complaint #1831761
    • "2016 MB 300 C, AWD at 87000 miles started giving gas fuel smell when parked in our garage after driving. I took to a local Foreign Car Repair facility and they found a fuel leak at the fuel injector pump. The mechanic changed the Fuel Injector Pump (Bosch) at…"~87,000 mi, complaint #1783960
  13. #13

    steering electric assist

    4 unsafe

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated that while driving at various highway speeds, the message "Check Power Steering" was displayed, and the steering wheel became stiff and very difficult to turn in either direction. The cause of the…"~96,000 mi, complaint #1982352
  14. #14

    adas collision warning

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=4)

    • "C300 ANTI COLLISION SENSOR MALFUNCTION LIGHT DISPLAYED AND LOSS ENGINE POWER FOR SEVERAL SECONDS. THE CAR WAS TRAVELING APROX 20 MPH AT THE TIME ON CITY STREET. THEN POWER RESUMED, THE WARNING LIGHT WENT OUT. MERCEDES-BENZ OF TEMECULA, CA COULD NOT FIND A PROB…"~900 mi, complaint #1317294
    • "MY WIFE WAS DRIVING HER CAR ON A PAVED, AND DRY, ROAD. SHE WAS FOLLOWING BEHIND A SUV, THAT APPLIED THE BRAKES ABRUPTLY. SHE HAD DIFFICULTY STOPPING HER CAR AND SHE WOUND UP HITTING THE SUV IN FRONT OF HER. WHILE THIS DOES SOUND UNUSUAL, IT IS FOR THIS CAR (20…"~7,000 mi, complaint #1337357
  15. #15

    heater core and blower

    2 unsafe, 1 annoyance

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "THERE IS A VERY STRONG GAS SMELL WHEN THE HEAT AND/OR DEFROSTER IS TURNED ON. THE HIGHER THE HEAT IS TURNED UP'THE HIGHER THE GAS SMELLS. THE SMELL LINGERS WHEN THE CAR IS NOT RUNNING/CUT-OFF. I HAVE NOTICED THAT THE STRONG SMELL OF GAS DOES NOT OCCUR WHEN…"complaint #1655147
    • "Ac/heater smells like mold/musty/mildew inside the cabin. Took for the extended warranty but will not honor unless you have proof of cabin filters purchased every year. This is their way of finding a loop of not fixing the issue. "complaint #1942799
    • "Fuel is leaking inside cabin whenever I turn on my heat"complaint #2047642
  16. #16

    interior trim

    1 unsafe, 2 annoyance

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "the Burl wood trim panel on the interior doors are deteriorating , the drivers side panel is deteriorating to the point that it looks like acid is eating away at the material there is red markings showing .. i find this could be a safety hazard as it could e…"complaint #1853791
    • "The roof fabric headliner getting separated from its foam backing. That created two sagging fabric pockets on both ends near the rear windshield."complaint #2058557
    • "My driver seat bottom has a rip in the seam . It is exposing the heat wires for the heated seats . I can’t use the heated seats because of the wire exposed ."complaint #2058713
  17. #17

    steering rack mechanical

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Steering failed at low speeds. Something broke. Caused me to lose complete steering. Very scary and dangerous"complaint #1749786
    • "Electric power steering lost power and failed while driving on drive way. The steering became very difficult to turn and the car became very hard to control if not impossible. If it had failed while on the road with other cars, especially while turning, the ca…"complaint #1969116
    • "I am writing to formally report the premature failure and subsequent replacement of the electronic rack and pinion on my 2016 Mercedes-Benz C300 4Matic sedan. This repair was performed at Sears Imported Autos on 4/19/2024, at a cost of $5,840.14. Invoice numbe…"complaint #2158636
  18. #18

    ac compressor and refrigerant

    2 annoyance

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ C300. THE CONTACT STATED THAT THE VEHICLE PRODUCED AN ABNORMAL MOLD ODOR, WHICH DISTRACTED THE CONTACT WHILE DRIVING. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF MCKINNEY (2080 N CENTRAL EXPY, MCKINNEY, TX 75069, [REDAC…"~16,000 mi, complaint #1598592
  19. #19

    backup camera

    1 unsafe, 1 annoyance

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "REAR VIEW CAMERA IS NOT WORKING. FROZEN. I WAS PULLING INTO THE GARAGE. I HAD TO BACK UP SO PUT THE CAR IN REVERSE AND THEN SWITCH TO DRIVE FORWARD AND THE CAMERA FROZE."~50,000 mi, complaint #1733180
  20. #20

    brake booster

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "I have a 2016 C300 that was diagnosed with a severe brake booster issue. Last week, I had to brake hard while traveling [REDACTED ADDRESS] and they failed; luckily I was able to avoid catastrophe by maneuvering around the obstacle. I researched to see if this…"complaint #1840584
    • "i have been noticing a hissing sound coming from the brake paddle for almost 3 weeks. upon some online research i found out it could be a brake booster and there was a recall for the same car brand due to issues with brake booster in past but not included year…"complaint #1927745
  21. #21

    brake pads and rotors

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "RECURRING ISSUE OF SEVERE PULSATION WHEN BRAKING AT HIGHWAY SPEEDS. PULSATION EXACERBATED BY REPEATED STOPPING (RED LIGHTS) OR SLOWING FROM HIGH SPEEDS (FREEWAY EXIT RAMPS). THE PROBLEM MAKES IT DIFFICULT TO MAINTAIN PROPER CONTROL OF THE VEHICLE AND MAKES IT…"~40,000 mi, complaint #1730803
    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated while crossing a pay toll, she was depressing the brake pedal to the floorboard but the vehicle failed to decelerate and rear-ended into a truck. The contact stated no warning light was illuminated…"~49,900 mi, complaint #1825372
  22. #22

    corrosion and rust

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "The contact owns a 2016 Mercedes-Benz C300. The contact stated that while driving approximately 20 MPH and turning the steering wheel to the right or the left, there was an abnormal clicking sound coming from the rear of the vehicle. There was no warning light…"~130,000 mi, complaint #2175317
  23. #23

    fuel injector

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • " A fuel smell can be detected at idle inside the vehicle and around the engine area. A recall for some VIN's of this model in this year was enacted but not this particular model. No visible fuel moisture can be detected. A repair facility stated it might be…"complaint #1872443
    • "An independent service center diagnosed my car as having a fuel leak stemming from the fuel rail and fuel injectors. This is a fire hazard due to a gas leak. There is a gas smell in the interior cabin that I noticed approximately one month ago. I believe this…"complaint #2155789
  24. #24

    starter

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "MY CAR HAS A SAFETY RISK OPEN RECALL SINCE FEBRUARY 08, 2017 THAT HAS NOT BEEN FIXED. I HAVE NOT BEEN CONTACTED BY AN AUTHORIZED MERCEDES BENZ DEALER TO TAKE MY CAR IN AND REMEDY THE SAFETY RECALL. THE RECALL NOTICE STATES SUMMARY: DAIMLER AG (DAG),…"complaint #1407212
    • "2016 MERCEDES BENZ C300. CONSUMER WRITES IN REGARDS TO STARTER CURRENT LIMITER. *LD THE CONSUMER STATED AFTER THE RECALL REPAIR ON THE STARTER WAS COMPLETED THE FAILURE BEGAN. THE VEHICLE WOULD SHUT OFF WHILE DRIVING. *JS"complaint #1520504
  25. #25

    suspension arms and bushings

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Upon purchasing my 2016 C300, I starting experiencing a right pull whenever I press on the brakes. I was very concerned as I use this vehicle to assist with dropping and pick up of my 2 grandchildren. The more I drove the car, the more unsafe especially when I…"complaint #2107412
    • "I am reporting a structural failure of the rear subframe (axle carrier) on my 2016 Mercedes-Benz C300 (W205). The component is exhibiting significant internal-to-external corrosion (perforation), specifically at the suspension mounting points. Safety Impact:…"complaint #2199355
  26. #26

    tire failure

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "THE TIRES SUPPLIED ON THIS CAR ARE UNSUITABLE FOR INTENDED USE. LOW PROFILE TIRES ARE EASILY DAMAGED BY POTHOLES (WE LIVE IN CHICAGO) AND WITHOUT CONSTANT INSPECTION FOR "BUBBLES" PRESENT A HAZARD. THIS CAR IS TWO YEARS OLD WITH 8800 MILES ON IT AND IS ON IT…"~8,800 mi, complaint #1480793
    • "TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ C300 EQUIPPED WITH CONTINENTAL CONTACT SSR (NA) TIRES, SIZE: 225/45/18 (NA). WHILE DRIVING 30 MPH, THE SIDEWALL FAILED ON THE FRONT PASSENGER SIDE TIRE. THE CONTACT HAD THE TIRE REPLACED. THE CONTACT CALLED CONTINENTAL…"~26,000 mi, complaint #1442717
  27. #27

    unintended acceleration

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "AFTER STOPPING AND WAITING AT A TRAFFIC LIGHT FOR 15-30 SECONDS, I HAD MY FEET ON THE BRAKES AND LEFT TURN INDICATOR ON. THE "HOLD" OPTION TO LOCK MY BRAKES WAS NOT ENGAGED. THE CAR WAS STATIONARY. WITHOUT WARNING, THE CAR SHIFTED INTO DRIVE AND JOLTED FORWARD…"~8,999 mi, complaint #1318266
  28. #28

    acceleration loss or hesitation

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "In the past few months while driving this car in the Washington DC metro area at normal road speed, the car has suddenly and unexpectedly lost driver power. Each time, I have pushed down on the gas pedal, and after some hesitation the car has moved forward, an…"complaint #1934250
  29. #29

    battery and charging

    1 stranded

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "TL* THE CONTACT OWNED A 2016 MERCEDES-BENZ C300. WHILE DRIVING 15 MPH, A FIRE ERUPTED FROM THE BATTERY OF THE VEHICLE. THE CONTACT EXTINGUISHED THE FIRE AND STATED THAT WATER ENTERED INTO THE ENGINE, WHICH CAUSED THE VEHICLE TO HYDROLOCK. THE VEHICLE WAS TOWED…"~18,500 mi, complaint #1373397
  30. #30

    catalytic converter

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "IN FEBRUARY 2019 THE C300 ENGINE LIGHT CAME ON, TOOK THE VEHICLE TO THE DEALER AND THEY SAID IT WAS A BAD CATALYTIC CONVERTOR, AND THE DEALER TOOK THREE DAYS TO REPAIR IT. THREE WEEKS LATER IN MARCH 2019, WHILE DRIVING 25 MILES PER HOUR STRAIGHT ON A RESIDENTI…"~50,100 mi, complaint #1546609
  31. #31

    door latch and hinge

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "I HAD BEEN DRIVING FOR 5-7 MINUTES I WAS GOING DOWN A SLIGHT INCLINE ON A RURAL ROAD AND TOOK A RIGHT HAND TURN. THE DRIVER'S DOOR OPENED AND A RED WARNING LIGHT CAME UP ON THE DASH. I IMMEDIATELY APPLIED THE BRAKES TO STOP MY VEHICLE AND LOOKED AT THE DOOR.…"~64,000 mi, complaint #1512207
  32. #32

    driveshaft axle cv

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "My C300 MBZ, 2016 is experiencing the same symptoms as indicated in a recall, but my vehicle is not included in that recall. Camshaft: GENERAL REPAIR A cam is a rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion int…"complaint #2200270
  33. #33

    engine turbo supercharger

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Started smelling gas then check engine light came on took it to mercedes they did diagnostic which said low boost and that I needed to replace the turbocharger at a cost of over $7000 "complaint #1924717
  34. #34

    lighting exterior

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "I received a warning that my left front headlight was not working. I took the car to my dealer to have the light replaced. I was told that because this is an LCG assembly the entire assembly unit needed to be replaced and the cost would be $3,500."complaint #1980368
  35. #35

    mirror

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ C300. THE CONTACT STATED THAT THERE WAS AN EXTENSIVE GLARE THAT IMPACTED THE CONTACT'S VISIBILITY PERTAINING TO THE MIRRORS. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND ADVISED THE CONTACT TO HAVE A DEALER INSPECT…"complaint #1302356
  36. #36

    paint and clearcoat

    1 annoyance

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Panel between windshield and sunroof is peeling off loosing the clear coat even when the car is only 40.000 miles and is inside the garage"complaint #1985193
  37. #37

    parking brake

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "A lot of times when I park even on flat surfaces my parking brake engages and It’s hell being able to leave because I have to turn the car off open the door close door start the again put in drive while my foot is on the brake and pull and push the parking bra…"complaint #2191813
  38. #38

    power steering hydraulic

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "I WAS DRIVING THEN THE STARTED BEEN HARD NOW IT'S SAYING POWER STEERING MALFUNCTION"complaint #1657270
  39. #39

    seatbelt and pretensioner

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "LEFT REAR SEAT BELT JAMMED UP, TRAPPING MY DISTRESSED 3 YEAR OLD SON. IT WAS NECESSARY TO PHYSICAL CUT THE SEATBELT IN ORDER TO FREE THE CHILD. MID SECTION OF THE SEATBELT CONTRAPTION WAS PULLING PRESSURE ON THE CHILD BODY."complaint #1413665
  40. #40

    software or update

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "ON FOUR OCCASIONS, THE ELECTRONIC DASHBOARD GOES COMPLETELY BLACK AND WILL STAY THAT WAY FOR QUITE SOMETIME. THE DEALER TOLD ME THAT THE VEHICLE IS 'DOWNLOADING SOFTWARE', BUT THIS HAS HAPPENED ON THE HIGHWAY WITHOUT ANY WARNING FROM M-B. IT HAPPENS AFTER I PA…"~29,000 mi, complaint #1633999
  41. #41

    steering column

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Steering wheel will not adjust up and down, only in and out, Not correct position for driving safely."complaint #1771489
  42. #42

    throttle and pedal

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "WHEN AT A RED LIGHT AND THE CAR IS IDLING, ALL OF A SUDDEN THE CAR JERKS FORWARD. IF THE BRAKE IS NOT ENGAGED HARD, I HAVE EXPERIENCED THE CAR FEELING LIKE IT WILL LUNGE FORWARD. THIS OCCURS EACH AND EVERY TIME I AM IDLING AT A RED LIGHT."~3,592 mi, complaint #1360231
  43. #43

    timing belt or chain

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "My car on has 80,000 miles and the camshaft position sprockets needs to be replaced. I went to a Mercedes dealer and this was the diagnostic. This causes the engine light to come on, hesitant engine, low acceleration while driving. The dealer said it will cost…"complaint #2043277
  44. #44

    transmission automatic

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Transmission shifted into neutral after coming to a stop. Brake was applied. Similar issue to NHTSA Campaign 21V033000 for 2019 GLA 250."complaint #1755552
  45. #45

    unknown

    1 annoyance

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "PO52E code showed was the code pulled on my 2016 Mercedes c 300 4 matic . My car had 73000 miles on when I bought it and that code was pulled when I bought it . At 73000 miles my car shouldn’t have this problem . "complaint #1872826
  46. #46

    wiper and washer

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "IN ADDITION TO A STRONG, NOXIOUS, MOLDY ODOR, VEHICLE'S FRONT WINDSHIELD FOGS OVER SO TOTALLY THAT IT BECOMES DANGEROUS IN HIGHWAY DRIVING. THE HVAC/CLIMATE-CONTROL SYSTEM'S DEFROSTER IS UNABLE TO CLEAR MORE THAN THE BOTTOM FEW INCHES OF THE WINDSHIELD: THE…"~25,000 mi, complaint #1529706

NHTSA investigations

Search NHTSA's own recall and complaint database for MERCEDES BENZ C 300 directly.