FaultScore

FaultScore report

2018 Mercedes Benz AMG C43 problems

Owners have filed 18 complaints about the 2018 Mercedes Benz AMG C43 with NHTSA between 2018 and 2025. The largest single group is the wheels. Across this model's run it ranks 2 of 3 worst.

C

FaultScore 41/100

Higher is worse. Measured against the other years of the Mercedes Benz AMG C43.

How this is worked out

The numbers

18

Complaints

0

Crashes reported

0

Fires reported

0

Injuries reported

4,500 mi

Median mileage at failure

Half of reported failures happened before this

89%

Failed under 36,000 miles

Inside a typical bumper-to-bumper warranty

What kind of bad

The letter says how bad. This says what kind — whether this year drew an unusual number of complaints, unusually dangerous ones, or failures that arrived unusually early.

Complaint volume 42 vs 50 Severity 0 vs 50 Early failure 100 vs 50
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 42
Against the median year of the Mercedes Benz AMG C43. 50 means typical for this model; 100 means roughly double.
Severity — 0
0% of these complaints involved a crash, fire, injury or death, against a national rate of 9.7%.
Early failure — 100
89% of failures with a mileage on record happened under 36,000 miles, against a national rate of 29%.

How 2018 compares with every other Mercedes Benz AMG C43

Click any bar to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks on a 2018 Mercedes Benz AMG C43

Every complaint is filed against a part. Follow any row for the complaints about that part alone.

Other & Unspecified 4 22.2%

Median failure at 24,747 miles

Wheels 4 22.2%

Median failure at 4,500 miles

Tires 2 11.1%

Median failure at 7,950 miles

Electrical System 2 11.1%
Transmission & Drivetrain 2 11.1%

Median failure at 2,529 miles

Seat Belts 1 5.6%
Windows, Mirrors & Wipers 1 5.6%
Body & Structure 1 5.6%
Engine & Cooling 1 5.6%

Median failure at 4,101 miles

When it fails

Odometer readings owners gave when they filed. About half of all complaints include one.

Under 1,000 miles 1 11.1%
1,000 – 9,999 miles 5 55.6%
10,000 – 24,999 miles 2 22.2%
100,000 – 149,999 miles 1 11.1%

When owners complained

A spike years after the car went on sale usually means a part wearing out on schedule across the whole fleet — the kind of pattern no single owner can see from inside their own car.

Oct 2018 peak 6 Jul 2025

NHTSA investigations into the 2018 Mercedes Benz AMG C43

An investigation is the step before a recall: the agency has seen enough complaints to look into a pattern itself. An open one means it thinks something may be wrong and nothing has been fixed yet.

1 investigation is still open.

EA21002 Opened 17 Sep 2021 Still open AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

Desiccated Air Bag Inflator Rupture

From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.C...

The most recent complaints

In the owners' own words, exactly as filed with NHTSA.

La Mirada, CA

UNKNOWN OR OTHER

I was driving around my neighborhood one day with my panoramic sunroof open and at the red light i wanted to close the sunroof (california summer sun is no joke) and it made this really big 'THUMP' noise, thought the sunroof glass cracked. After the big THUMP noise, the sunroof wouldnt close and this is after the light turned green so i am driving slowly because there was rattling noise coming from the sunroof and didnt want the sunroof to fly out from the car. So i had to pull over and try to figure out if its okay to drive with stuck sunroof with it rattling noise. after that i tried to close and open the sunroof and wouldnt move or do anything, it was just stuck. So i turned my hazzards on then drove slowly back home. after about 30 mins playing with sunroof in my garage, hoping that i will close (then at least i can still drive my car without being scared that it will fly out from my car), finally go it to closed but now it doesnt work at all. then i have found out that from 2014 to 2018 pano sunroof is known issue and there were safety recall on some pano sunroof already on this model. i called 6 places and they told me (besides from how many they had already repaired) the holder on the sunroof rail is broken so the whole rail assy needs to be replaced. imagine if i was on a freeway going 65+ and if this would have happend and this HUGE pano sunroof flew out from my car... this is very big safety issue and that probably why 2017 (same pano sunroof) was on a recall.

NHTSA complaint #11671664 — an unverified report by a vehicle owner.

Chandler, AZ

UNKNOWN OR OTHER

Panoramic roof suddenly shattered while driving on a clear day.

NHTSA complaint #11558978 — an unverified report by a vehicle owner.

Torrance, CA

STRUCTURE:BODY:ROOF AND PILLARS

Incorrect bonding of the rear window. The rear window bond is failing which is causing the window to detach from the convertible top. The bonding is failing in many different locations, causing not only detachment, but the failure is also causing fine hairline cracks at the points of failure. The dealership refused to correct the defect, informed I would have to pay $3,000.00 to correct the failure of the bonding.

NHTSA complaint #11538137 — an unverified report by a vehicle owner.

Torrance, CA

VISIBILITY/WIPER

Incorrect bonding of the rear window. The rear window bond is failing which is causing the window to detach from the convertible top. The bonding is failing in many different locations, causing not only detachment, but the failure is also causing fine hairline cracks at the points of failure. The dealership refused to correct the defect, informed I would have to pay $3,000.00 to correct the failure of the bonding.

NHTSA complaint #11538137 — an unverified report by a vehicle owner.

Fort Lauderdale, FL

UNKNOWN OR OTHER

Damaged cords on the soft top interior trim with the following characteristics: - Cord snapped - Cord worn - Cord torn out - Cord sheathing damaged Cause: Possible high tensile stresses on the cords during the soft top sequence

NHTSA complaint #11476629 — an unverified report by a vehicle owner.

Castro Valley, CA

SEAT BELTS

Mercedes-Benz C-Class convertibles from the 2017 to 2021 model years are being recalled because the seat belts might not comply with federal Occupant Crash Protection standards. The problem is that the front seat belts might not fully retract to their stowed position because of the geometry of the front seat belt retractor. The dealers are refusing to fix this issue.

NHTSA complaint #11469200 — an unverified report by a vehicle owner.

Scottsdale, AZ

ELECTRICAL SYSTEM

The contact owns a 2018 Mercedes-Benz C43 AMG. The contact received notification of NHTSA Campaign Number: 21V058000 (Communication, Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA complaint #11418320 — an unverified report by a vehicle owner.

Scottsdale, AZ

COMMUNICATION

The contact owns a 2018 Mercedes-Benz C43 AMG. The contact received notification of NHTSA Campaign Number: 21V058000 (Communication, Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA complaint #11418320 — an unverified report by a vehicle owner.

Hempstead, NY

WHEELS

THE VEHICLE HAD A FRONT PASSENGER SIDE CRACKED RIM AND DAMAGED RUN FLAT TIRE.

NHTSA complaint #11413199 — an unverified report by a vehicle owner.

at 24,747 miles Whitefish BAY, WI

UNKNOWN OR OTHER

I WAS TOLD THAT THE PRESENT RECALL HAD BEEN REPAIRED. YOU STILL HAVE IT AS AN OPEN RECALL, WITHOUT A PRESENT FIX. HOW LONG DOES IT TAKE TO REMOVE A RECALL?

NHTSA complaint #11400097 — an unverified report by a vehicle owner.

at 4,500 miles Brooklyn, NY

WHEELS

CONTINENTAL CONTISPORTCONTACT SSR TIRES SIDE WALL RIP/TEAR (MERCEDES BENZ), THIS IS THE FORTH REPLACED TIRES, COMPLAINED SEVERAL TIMES AND FALLS ON DEATHS EARS. MY CONCERN IF A MAJOR CRASH DO TO THE TIRES THEN WHO IS AT FAULT. REPLACING IT SEVERAL TIMES IS NOT THE ANSWER. TAKING THESE TIRES OFF THE ROAD WILL SAVES LIVES. CAR ONLY HAS 6000 MILES ON IT.

NHTSA complaint #11202678 — an unverified report by a vehicle owner.

at 4,500 miles Brooklyn, NY

TIRES

CONTINENTAL CONTISPORTCONTACT SSR TIRES SIDE WALL RIP/TEAR (MERCEDES BENZ), THIS IS THE FORTH REPLACED TIRES, COMPLAINED SEVERAL TIMES AND FALLS ON DEATHS EARS. MY CONCERN IF A MAJOR CRASH DO TO THE TIRES THEN WHO IS AT FAULT. REPLACING IT SEVERAL TIMES IS NOT THE ANSWER. TAKING THESE TIRES OFF THE ROAD WILL SAVES LIVES. CAR ONLY HAS 6000 MILES ON IT.

NHTSA complaint #11202678 — an unverified report by a vehicle owner.

at 4,101 miles Covina, CA

POWER TRAIN

PURCHASED CAR JULY 2018. A/C LEAK IN AUG 2018 AND MARCH 2019; DEALER LOCATE LEAK. FRONT TIRE BLOWOUT WITHIN 6 MONTHS OF PURCHASE (DEC 2018) TRAVELING ON FREEWAY EVENING TIME APPROX 65 MPH; UNKNOWN REASON . SAME SIDE FRONT TIRE BLOW OUT 4 MONTHS LATER (MARCH 2019) DRIVING LATE EVENING ON A MAIN BOULEVARD TRAVELING 25 MPH AND RIGHT FRONT TIRE SHREDDED; HIT MINOR POTHOLE BOTH FRONT TIRES HAD TO BE REPLACED AND THE CAR ALIGNMENT CORRECTED. 1 MONTH LATER (APRIL 2019) RIGHT REAR TIRE LOOSING PSI EVERY 45 MILES; DEALER COULD NOT DETECT LEAK, POSSIBLE VALVE STEM. SAME VISIT DEALER REPLACED TWO REAR LEAKING SHOCK ABSORBERS AND NOTED RIGHT REAR TIRE HAD UNEVEN WEAR /RECOMMEND REPLACEMENT; TIRES HAVE 21,000 MILES. I WILL HAVE TO RETURN THE CAR TO THE DEALER FOR REPAIR. THE TRANSMISSION HAS A VERY HARD SHIFT WHEN I ACCELERATE MORE THAN MODERATE; THE HARD SHIFT CAUSES THE VEHICLE TO PAUSE AND JAR /JERK ABRUPTLY THAT ALMOST SEEMS LIKE YOU HIT SOMETHING. I HAD REPORTED THE ISSUE WITHIN 7 DAYS OF PURCHASE AND I WAS TOLD AMGS HAVE HARD SHIFTS. WHEN I INSISTED THERE WAS AN ISSUE A SECOND TIME IN MARCH 2019; THE ISSUE WAS ADDRESSED AND I WAS TOLD IT WAS THE COMPUTER SOFTWARE THAT REQUIRED AN UPDATE; THE UPDATE TEMPORARILY CORRECTED THE PROBLEM FOR APPROX 1 MONTH. THE VEHICLE HAS BEEN OUT OF SERVICE FOR APPROXIMATELY 13 DAYS SINCE PURCHASED 9 MONTHS AGO IN JULY 2018.

NHTSA complaint #11196192 — an unverified report by a vehicle owner.

at 4,101 miles Covina, CA

WHEELS

PURCHASED CAR JULY 2018. A/C LEAK IN AUG 2018 AND MARCH 2019; DEALER LOCATE LEAK. FRONT TIRE BLOWOUT WITHIN 6 MONTHS OF PURCHASE (DEC 2018) TRAVELING ON FREEWAY EVENING TIME APPROX 65 MPH; UNKNOWN REASON . SAME SIDE FRONT TIRE BLOW OUT 4 MONTHS LATER (MARCH 2019) DRIVING LATE EVENING ON A MAIN BOULEVARD TRAVELING 25 MPH AND RIGHT FRONT TIRE SHREDDED; HIT MINOR POTHOLE BOTH FRONT TIRES HAD TO BE REPLACED AND THE CAR ALIGNMENT CORRECTED. 1 MONTH LATER (APRIL 2019) RIGHT REAR TIRE LOOSING PSI EVERY 45 MILES; DEALER COULD NOT DETECT LEAK, POSSIBLE VALVE STEM. SAME VISIT DEALER REPLACED TWO REAR LEAKING SHOCK ABSORBERS AND NOTED RIGHT REAR TIRE HAD UNEVEN WEAR /RECOMMEND REPLACEMENT; TIRES HAVE 21,000 MILES. I WILL HAVE TO RETURN THE CAR TO THE DEALER FOR REPAIR. THE TRANSMISSION HAS A VERY HARD SHIFT WHEN I ACCELERATE MORE THAN MODERATE; THE HARD SHIFT CAUSES THE VEHICLE TO PAUSE AND JAR /JERK ABRUPTLY THAT ALMOST SEEMS LIKE YOU HIT SOMETHING. I HAD REPORTED THE ISSUE WITHIN 7 DAYS OF PURCHASE AND I WAS TOLD AMGS HAVE HARD SHIFTS. WHEN I INSISTED THERE WAS AN ISSUE A SECOND TIME IN MARCH 2019; THE ISSUE WAS ADDRESSED AND I WAS TOLD IT WAS THE COMPUTER SOFTWARE THAT REQUIRED AN UPDATE; THE UPDATE TEMPORARILY CORRECTED THE PROBLEM FOR APPROX 1 MONTH. THE VEHICLE HAS BEEN OUT OF SERVICE FOR APPROXIMATELY 13 DAYS SINCE PURCHASED 9 MONTHS AGO IN JULY 2018.

NHTSA complaint #11196192 — an unverified report by a vehicle owner.

at 11,401 miles Covina, CA

TIRES

2 BLOWOUTS, 1 TIRE SHREDDED, 1 VALVE STEM LEAK. BLOW OUT AT 11, 800 MILES.

NHTSA complaint #11196193 — an unverified report by a vehicle owner.

at 4,101 miles Covina, CA

ENGINE

PURCHASED CAR JULY 2018. A/C LEAK IN AUG 2018 AND MARCH 2019; DEALER LOCATE LEAK. FRONT TIRE BLOWOUT WITHIN 6 MONTHS OF PURCHASE (DEC 2018) TRAVELING ON FREEWAY EVENING TIME APPROX 65 MPH; UNKNOWN REASON . SAME SIDE FRONT TIRE BLOW OUT 4 MONTHS LATER (MARCH 2019) DRIVING LATE EVENING ON A MAIN BOULEVARD TRAVELING 25 MPH AND RIGHT FRONT TIRE SHREDDED; HIT MINOR POTHOLE BOTH FRONT TIRES HAD TO BE REPLACED AND THE CAR ALIGNMENT CORRECTED. 1 MONTH LATER (APRIL 2019) RIGHT REAR TIRE LOOSING PSI EVERY 45 MILES; DEALER COULD NOT DETECT LEAK, POSSIBLE VALVE STEM. SAME VISIT DEALER REPLACED TWO REAR LEAKING SHOCK ABSORBERS AND NOTED RIGHT REAR TIRE HAD UNEVEN WEAR /RECOMMEND REPLACEMENT; TIRES HAVE 21,000 MILES. I WILL HAVE TO RETURN THE CAR TO THE DEALER FOR REPAIR. THE TRANSMISSION HAS A VERY HARD SHIFT WHEN I ACCELERATE MORE THAN MODERATE; THE HARD SHIFT CAUSES THE VEHICLE TO PAUSE AND JAR /JERK ABRUPTLY THAT ALMOST SEEMS LIKE YOU HIT SOMETHING. I HAD REPORTED THE ISSUE WITHIN 7 DAYS OF PURCHASE AND I WAS TOLD AMGS HAVE HARD SHIFTS. WHEN I INSISTED THERE WAS AN ISSUE A SECOND TIME IN MARCH 2019; THE ISSUE WAS ADDRESSED AND I WAS TOLD IT WAS THE COMPUTER SOFTWARE THAT REQUIRED AN UPDATE; THE UPDATE TEMPORARILY CORRECTED THE PROBLEM FOR APPROX 1 MONTH. THE VEHICLE HAS BEEN OUT OF SERVICE FOR APPROXIMATELY 13 DAYS SINCE PURCHASED 9 MONTHS AGO IN JULY 2018.

NHTSA complaint #11196192 — an unverified report by a vehicle owner.

at 100,012 miles Greer, SC

WHEELS

I HAVE OWNED THE CAR FOR ABOUT 14 MONTHS AND DRIVEN JUST OVER 10,000 MILES DURING THAT TIME. I HAVE NOW HAD MY FIFTH FLAT OR DAMAGED FRONT TIRE SINCE OWNERSHIP OCCURRING ON BOTH DRIVER SIDE AND PASSENGER SIDE. THE DEALER REPLACES THE TIRE, WITH THE OEM REPLACEMENT, FIRST AT MY COST OF AROUND $400 EACH AND THEN EACH SUBSEQUENT TIME FOR $35 UNDER THE INCLUDED ROAD HAZARD WARRANTY. I HAVE CONTACTED THE DEALER AND MBUSA ABOUT THIS REOCCURING ISSUE WHICH THEY STATE IS NOT UNDER RECALL AND IS AN ISSUE WITH THE TIRE MANUFACTURER. HOWEVER, I FAIL TO SEE HOW THEY ARE NOT RESPONSIBLE BECAUSE THEY CHOSE THE OEM TIRE SUPPLIER. IN EVERY CASE EXCEPT ONE, THE TIRE ISSUE WAS CAUSED BY A RELATIVELY SHALLOW POT HOLE OR PAVEMENT DEFECT. THE ONE EXCEPTION WAS WHEN I CAME IN CONTACT WITH A MORE SUBSTANTIAL POT HOLE AT NIGHT (I DIDN'T SEE IT) AND THE TIRE BLEW OUT COMPLETELY AND I HAD TO ABANDON THE CAR OVERNIGHT UNTIL THE DEALER COULD TOW IT THE NEXT DAY. ONE TIME, THE CAR WAS TRAVELING AT HIGHWAY SPEEDS, BUT OTHER TIMES IT WAS ON BACK ROADS AT SPEEDS OF NO MORE THAN 35-40 MPH. THE TIRES ARE RUN FLAT TIRES AND THE CAR HAS NO SPARE SO I AM RELUCTANT TO DRIVE AT NIGHT AND DEFINITELY CANNOT TAKE ON ANY TRIPS FOR FEAR OF GETTING STRANDED.

NHTSA complaint #11171194 — an unverified report by a vehicle owner.

at 957 miles Vacaville, CA

POWER TRAIN

NEW VEHICLE WITH UNDER 1000 TOTAL MILEAGE. INTERNAL PRESSURE CONTROL VALVE IN TRANSMISSION FAILED CAUSING MAJOR DAMAGE TO TRANSMISSION WITH METAL SHAVING FOUND IN TRANSMISSION PAN. TRANSMISSION AND FAULTY VALVE NEEDED TO BE REPLACED UNDER WARRANTY.

NHTSA complaint #11140526 — an unverified report by a vehicle owner.