2012 Mercedes-Benz C250 Problems

The model/year Mercedes-Benz are well known for experiencing this/these particular issues. My research has shown that these year/make/model vehicles are experiencing the same type of mechanical failures nationwide. The issues all relatively begin around 75,000 miles. I've only had my car 3 years putting 30000 on it hardly driven/cared for **Issue Found:** Oil was leaking onto the ignition coil and spark plug of cylinder 3. **Source of Leak:** Valve cover gasket failure. **Recommended Repairs:** - Replace the valve cover gasket (to halt the oil leak). - Replace spark plugs and ignition coil (which were contaminated/damaged by oil). **Relevance to Warranty:** The valve cover gasket is only covered if it fails as a result of an internally lubricated engine part causing damage. Ignition coils and spark plugs are maintenance items and are not covered by warranty plans. **Required Repairs (Identified Mechanical Issues)** - **Coolant Pipe Leak – $850** **Issue:** Coolant leaking from a pipe on the side of the cylinder head. **Relevance to Warranty:** Typically not covered unless it pertains to a failure in a covered system such as the water pump or cylinder head due to an internal breakdown. This is likely classified as an external plumbing component, which is not included. - **Oil Feed Line Leak – $600** **Issue:** Oil leaking from the side of the engine, traced back to the oil feed line. **Relevance to Warranty:** This is not typically covered unless the oil feed line is part of the oil pump system and has failed due to an internal issue (usually regarded as an external line). **Other Items Found (Worsening Issues)** - **Timing Chain Rattle / Cam Adjuster Noise – $6,000** -**Issue:** Rattling sound during startup. **Diagnosis:** Noise emanating from the timing chain and camshaft adjusters. **Relevance to Warranty:** This is covered under Secure Plus, as both the timing chain and camshaft adjusters are recognized as internally lubricated par

1) cranshaft and camshaft position sensors, timing problems and it has to be replaced this is a common damage in Mercedes Benz 2012 c250. 2) this put in risk my life because it can brake the engine in a highway and the car could be off.

The contact owns a 2012 Mercedes-Benz C250. The contact stated that while driving at an undisclosed speed, there was an abnormal rattling sound coming from the vehicle with the check engine warning light illuminated. The contact drove the vehicle to the shoulder of the road. The contact stated that the rattling sound continued, and the vehicle shuddered abnormally. The vehicle was towed to the residence. The independent mechanic provided mobile service and diagnosed the vehicle with cam shaft timing chain adjuster failure. The contact was informed that the cam shaft timing chain adjuster needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline and report the failure. The failure mileage was approximately 150,000.

The model/year Mercedes-Benz are well known for experiencing this/these particular issues. My research has shown that these year/make/model vehicles are experiencing the same type of mechanical failures nationwide. The issues all relatively begin around 75,000 miles. I've only had my car 3 years putting 30000 on it hardly driven/cared for **Issue Found:** Oil was leaking onto the ignition coil and spark plug of cylinder 3. **Source of Leak:** Valve cover gasket failure. **Recommended Repairs:** - Replace the valve cover gasket (to halt the oil leak). - Replace spark plugs and ignition coil (which were contaminated/damaged by oil). **Relevance to Warranty:** The valve cover gasket is only covered if it fails as a result of an internally lubricated engine part causing damage. Ignition coils and spark plugs are maintenance items and are not covered by warranty plans. **Required Repairs (Identified Mechanical Issues)** - **Coolant Pipe Leak – $850** **Issue:** Coolant leaking from a pipe on the side of the cylinder head. **Relevance to Warranty:** Typically not covered unless it pertains to a failure in a covered system such as the water pump or cylinder head due to an internal breakdown. This is likely classified as an external plumbing component, which is not included. - **Oil Feed Line Leak – $600** **Issue:** Oil leaking from the side of the engine, traced back to the oil feed line. **Relevance to Warranty:** This is not typically covered unless the oil feed line is part of the oil pump system and has failed due to an internal issue (usually regarded as an external line). **Other Items Found (Worsening Issues)** - **Timing Chain Rattle / Cam Adjuster Noise – $6,000** -**Issue:** Rattling sound during startup. **Diagnosis:** Noise emanating from the timing chain and camshaft adjusters. **Relevance to Warranty:** This is covered under Secure Plus, as both the timing chain and camshaft adjusters are recognized as internally lubricated par

The contact owns a 2012 Mercedes-Benz. The contact stated while driving at an undisclosed speed, the Check Engine and High Pressure Fuel Pump warning lights was illuminated. The failure occurred on several different occasions. The vehicle was taken back to the residence. The contact did research and was made aware of an unknown NHTSA Campaign Number however, the VIN was not included. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

During hard acceleration the high-pressure fuel pump fails. I've never had to replace this part on any other car that I have owned. When I research the part for this car, I reviewed many forums and articles complaining about the failure of the high-pressure fuel pump on the Mercedes c250 sport or similar chassis. The vehicle performs normally until there is hard acceleration; then the engine light comes on. This causes the car to lose acceleration power and slows the car down significant and can be dangerous especially if driving on a freeway or highway. The failure of the part has been reported to occur as early as 30k miles.

-The steering wheel and brake locked up and became unusable while driving at approximately 75mph. Cruise control was enabled for a few miles (maybe 2) and disabled after. Around 5 minutes after disabling, the car began to surge between acceleration and deceleration drastically on its own. All of the dashboard lights that come on when the key is initially inserted came on at once while engine was on/running and the car was in drive. After finally being able to reach a safe enough spot, I put the car in park and turned the engine off. I sat for a few minutes to try and turn the engine/car back on and the car would not crank, but the overhead lights, radio, and dash lights were functioning. -This was an extremely dangerous experience. The car began to decelerate rapidly in heavy freeway traffic. At that speed, with many semi-trucks traveling nearby, this sudden loss of speed created an extremely dangerous situation. My vehicle instantly became a slow moving obstacle in the lane. Only by luck and quick reaction was a serious or fatal collision avoided. The car would not start back up so I was sitting at the edge of the highway as many cars flew by just inches away from my car. -I am away at college in a rural city. Accessibility is limited as well as support because of lack of resources. -The car was towed to a mechanic who does not specialize in German cars and stated they did not have the proper tools to "get into the car" because the motor is "locked up" and the car wouldn't crank. -The vehicle will be towed to the nearest dealership (50mi away) who stated they won't be able to look at it for a few weeks from date of arrival. Research indicates this may be linked to a known issue with Electronic Steering Lock (ESL) / Electronic Ignition Switch (EIS) failure in Mercedes vehicles, which can electronically disable the engine and steering. This could've easily been fatal for me and still poses an alarming threat if not addressed.

The contact owns a 2012 Mercedes-Benz C250. The contact stated while driving 35-40 MPH and depressing the brake pedal, the brake pedal was significantly stiff, and the vehicle failed to respond as needed. The contact stated that upon standing on the brake pedal, the vehicle responded as needed. The contact stated that the failure recurred while driving 65 MPH. The vehicle was taken to the dealer, where the vacuum pump was replaced; however, the failure recurred. The vehicle was taken to Mercedes-Benz of Beaumont (1865 I-10 S, Beaumont, TX 77701), where it was test-driven, and the dealer became aware that the brake pedal was extremely firm. The dealer diagnosed the vehicle and determined that the vacuum pump needed to be replaced. The part was replaced; however, the failure persisted. The contact stated that the failure increased, causing the contact to engage the parking brake to stop the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 96,826.

1. The car radio, blue-tooth, speakers, sound, car remote sound. Happened after a battery change by AAA - unsure if it's related. CUstomer service tried to resolve it - radio turns on, but nothing else works. 2. Doors won't unlock outside or inside - except passenegers side is open. 3. Accelerator acting strange - won't pick speed after 30, then 60 4. there was an air bag recal of this car a while ago.

The contact owns a 2012 Mercedes-Benz C250. The contact stated while the vehicle was parked, the anti-lock theft prevention feature failed to function as intended. The contact stated that the steering wheel was seized, and the vehicle failed to start. The vehicle was towed to the residence. The contact was informed by the tow truck driver that the failure was due to the electronic lockout system. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 143,000.

The contact owns a 2012 Mercedes-Benz C250. The contact stated while starting the vehicle, the vehicle started very rough with a rattling sound coming from the vehicle. The check engine warning light illuminated. The vehicle was not diagnosed. On another occasion, while opening the front driver’s side door, the door handle fractured. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was 90,000.

I was driving my 2012 Mercedes C250 through an intersection on 08/09/2021 when I first heard clunking noises in the rear of my vehicle. Every time I placed my foot on the brakes after that it continued to clunk until I took it to the Mercedes dealership for repair on 08/17/2021. The car had about 57,000 miles on it and was only nine years old, but the dealership said that the entire rear subframe of the vehicle had rusted and was close to completely separating from other parts of the vehicle. This was the first time I heard of any rusting in my vehicle, despite having the 2 rear tires replaced and alignment by the same place on 10/02/2020 (less than one year before). The service rep acknowledged that the car was well-maintained and that this was not due to any accident. This rusting was due to a manufacturing defect and has caused accidents in other Mercedes vehicles (https://www.carproblemzoo.com/mercedesbenz/c300/suspension-problems.php). It has resulted in recalls of rusted parts in both Europe (https://europe.autonews.com/article/19981026/ANE/810260839/mercedes-offers-guarantee-against-rust-for-30-years) and Canada (https://www.wheels.ca/news/mercedes-benz-recalling-vehicles-for-rust-problems/). Had I been travelling at a higher rate of speed when this piece failed, I could have been at risk of serious injury. This event occurred without any warning lamps or messages. The service for replacement and realignment was quoted at $4,358.71. Only after much argument did I receive a final bill of $3448.71. This was an unbelievable cost for replacing a part with a manufacturer defect. Mercedes headquarters tried to claim that the issue was due to exposure to snow and salt on the roads. This region rarely gets any snow. This lack of care for customer safety along with the fact that the dealership did not retain the part they removed from my vehicle after I had requested them to do so, left me realizing that Mercedes doesn't care about safety standards for their products.

-The steering wheel and brake locked up and became unusable while driving at approximately 75mph. Cruise control was enabled for a few miles (maybe 2) and disabled after. Around 5 minutes after disabling, the car began to surge between acceleration and deceleration drastically on its own. All of the dashboard lights that come on when the key is initially inserted came on at once while engine was on/running and the car was in drive. After finally being able to reach a safe enough spot, I put the car in park and turned the engine off. I sat for a few minutes to try and turn the engine/car back on and the car would not crank, but the overhead lights, radio, and dash lights were functioning. -This was an extremely dangerous experience. The car began to decelerate rapidly in heavy freeway traffic. At that speed, with many semi-trucks traveling nearby, this sudden loss of speed created an extremely dangerous situation. My vehicle instantly became a slow moving obstacle in the lane. Only by luck and quick reaction was a serious or fatal collision avoided. The car would not start back up so I was sitting at the edge of the highway as many cars flew by just inches away from my car. -I am away at college in a rural city. Accessibility is limited as well as support because of lack of resources. -The car was towed to a mechanic who does not specialize in German cars and stated they did not have the proper tools to "get into the car" because the motor is "locked up" and the car wouldn't crank. -The vehicle will be towed to the nearest dealership (50mi away) who stated they won't be able to look at it for a few weeks from date of arrival. Research indicates this may be linked to a known issue with Electronic Steering Lock (ESL) / Electronic Ignition Switch (EIS) failure in Mercedes vehicles, which can electronically disable the engine and steering. This could've easily been fatal for me and still poses an alarming threat if not addressed.

I got stranded in the middle of the street my vehicle does not crank steering lock so I had my vehicle towed into the Mercedes dealership the one in Figueroa st Monday November 18 2024 at around 03:24pm and this is what they told me. Needs immediate attention custom recommendation ELECTRIC STEERING LOCK During vehicle inspection found electric steering lock has malfunction code 25464 recommend to replace electric steering lock first and perform re-check. Repair total estimate: $2,829.78 I definitely can't afford to pay that amount please help with this issue

The model/year Mercedes-Benz are well known for experiencing this/these particular issues. My research has shown that these year/make/model vehicles are experiencing the same type of mechanical failures nationwide. The issues all relatively begin around 75,000 miles. I've only had my car 3 years putting 30000 on it hardly driven/cared for **Issue Found:** Oil was leaking onto the ignition coil and spark plug of cylinder 3. **Source of Leak:** Valve cover gasket failure. **Recommended Repairs:** - Replace the valve cover gasket (to halt the oil leak). - Replace spark plugs and ignition coil (which were contaminated/damaged by oil). **Relevance to Warranty:** The valve cover gasket is only covered if it fails as a result of an internally lubricated engine part causing damage. Ignition coils and spark plugs are maintenance items and are not covered by warranty plans. **Required Repairs (Identified Mechanical Issues)** - **Coolant Pipe Leak – $850** **Issue:** Coolant leaking from a pipe on the side of the cylinder head. **Relevance to Warranty:** Typically not covered unless it pertains to a failure in a covered system such as the water pump or cylinder head due to an internal breakdown. This is likely classified as an external plumbing component, which is not included. - **Oil Feed Line Leak – $600** **Issue:** Oil leaking from the side of the engine, traced back to the oil feed line. **Relevance to Warranty:** This is not typically covered unless the oil feed line is part of the oil pump system and has failed due to an internal issue (usually regarded as an external line). **Other Items Found (Worsening Issues)** - **Timing Chain Rattle / Cam Adjuster Noise – $6,000** -**Issue:** Rattling sound during startup. **Diagnosis:** Noise emanating from the timing chain and camshaft adjusters. **Relevance to Warranty:** This is covered under Secure Plus, as both the timing chain and camshaft adjusters are recognized as internally lubricated par

Lost of drive power and the vehicle steering wheel locked on my mercedes from a damaged malfunctioning steering lock actuator module due to mechanical issues within the steering column such as bad steering wheel assembly, faulty steering lock module or issue with the wiring or other electrical components and the mercedes dealer is the only one who solves this issue no other mechanic in general. My safety was at risk due to I lost power and lost of front brakes due to bad sway bar assembly or components could of caused and accident when this happened on November 12, 2024 the problem dealership found during vehicle inspection was code 25464 they told me recommend to replace electric lock module and repair estimate was $2,829.78 and before I approved the the amount I told Mr Ivan Velasco service advisor that after they replace the module that if my vehicle was going to be working again and that if I was just going to make 1 payment of $2,829.78 then I would approved it so I did. Weeks later I got an email asking for more money they wanted another payment for $600 saying it needed a sensor that has something to do with the transmission because after replacing the new module the vehicle did not start up there was no type of communications nothing at all and I responded that I was not going to pay $600 more just cause they don't know what their doing because they promise me the car was going to work after they replace the module now that it did not want to crank up they found another issue that's their fault on not doing there job the right way and for telling lies yes their was flashing blue or red icon on my dashboard that look like a car and a lock would go on and off and it displayed a message saying The theft protection is activated. I want to know if I can get this issue approved and to be considered a recall can you please help I'm so frustrating and mad that they want more money when it's already so expensive please help I would of appreciate it thank you.

-The steering wheel and brake locked up and became unusable while driving at approximately 75mph. Cruise control was enabled for a few miles (maybe 2) and disabled after. Around 5 minutes after disabling, the car began to surge between acceleration and deceleration drastically on its own. All of the dashboard lights that come on when the key is initially inserted came on at once while engine was on/running and the car was in drive. After finally being able to reach a safe enough spot, I put the car in park and turned the engine off. I sat for a few minutes to try and turn the engine/car back on and the car would not crank, but the overhead lights, radio, and dash lights were functioning. -This was an extremely dangerous experience. The car began to decelerate rapidly in heavy freeway traffic. At that speed, with many semi-trucks traveling nearby, this sudden loss of speed created an extremely dangerous situation. My vehicle instantly became a slow moving obstacle in the lane. Only by luck and quick reaction was a serious or fatal collision avoided. The car would not start back up so I was sitting at the edge of the highway as many cars flew by just inches away from my car. -I am away at college in a rural city. Accessibility is limited as well as support because of lack of resources. -The car was towed to a mechanic who does not specialize in German cars and stated they did not have the proper tools to "get into the car" because the motor is "locked up" and the car wouldn't crank. -The vehicle will be towed to the nearest dealership (50mi away) who stated they won't be able to look at it for a few weeks from date of arrival. Research indicates this may be linked to a known issue with Electronic Steering Lock (ESL) / Electronic Ignition Switch (EIS) failure in Mercedes vehicles, which can electronically disable the engine and steering. This could've easily been fatal for me and still poses an alarming threat if not addressed.

Lost of drive power and the vehicle steering wheel locked on my mercedes from a damaged malfunctioning steering lock actuator module due to mechanical issues within the steering column such as bad steering wheel assembly, faulty steering lock module or issue with the wiring or other electrical components and the mercedes dealer is the only one who solves this issue no other mechanic in general. My safety was at risk due to I lost power and lost of front brakes due to bad sway bar assembly or components could of caused and accident when this happened on November 12, 2024 the problem dealership found during vehicle inspection was code 25464 they told me recommend to replace electric lock module and repair estimate was $2,829.78 and before I approved the the amount I told Mr Ivan Velasco service advisor that after they replace the module that if my vehicle was going to be working again and that if I was just going to make 1 payment of $2,829.78 then I would approved it so I did. Weeks later I got an email asking for more money they wanted another payment for $600 saying it needed a sensor that has something to do with the transmission because after replacing the new module the vehicle did not start up there was no type of communications nothing at all and I responded that I was not going to pay $600 more just cause they don't know what their doing because they promise me the car was going to work after they replace the module now that it did not want to crank up they found another issue that's their fault on not doing there job the right way and for telling lies yes their was flashing blue or red icon on my dashboard that look like a car and a lock would go on and off and it displayed a message saying The theft protection is activated. I want to know if I can get this issue approved and to be considered a recall can you please help I'm so frustrating and mad that they want more money when it's already so expensive please help I would of appreciate it thank you.

Active headrest on front passenger seat forcefully deployed without any collision or impact occurring. It happened during a gradual stop at red light. Bits of broken plastic were found on the passenger seat after deployment. Cannot re-set the headrest because of broken parts. No one was in the seat at the time but now concerned that the same thing will happen to driver's headrest.

AIRBAG RECALL NOTICE MARCH 2017, STILL NO RESOLUTION. SEATS ADVERTISED AS LEATHER, NOT LEATHER INTERMITTENT GAS SMELL FILLS CABIN OF VEHICLE CAUSING RESPIRATORY ISSUES

TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ C250. THE CONTACT STATED THAT THE TAIL LIGHTS FAILED TO ILLUMINATE, INCLUDING THE TURN SIGNALS AND BRAKE LIGHTS. THE CONTACT ATTEMPTED TO REPLACE THE TAIL LIGHT BULBS HIMSELF AND FOUND THAT THE TAIL LAMP ASSEMBLY HAD PARTIALLY MELTED. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ EURO MOTOR CARS (7020 ARLINGTON ROAD, BETHESDA, MD 20814, 301-986-8800) WHERE THE TAIL LAMP HOLDERS AND REAR WIRING AND BULBS WERE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS CONTACTED AND STATED THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 14V177000 (EXTERIOR LIGHTING). THE MANUFACTURER PROVIDED PARTIAL REIMBURSEMENT FOR THE REPAIR. THE APPROXIMATE FAILURE MILEAGE WAS 85,000. *BF CONSUMER STATED IT SHOULD BE COVERED AS THE C250 IS THE SAME CAR AS THE C300 INCLUDED IN THIS RECALL. THE DIFFERENCE IS THE ENGINE SIZE AND YEAR (2012 VS 2011).*JB

RECEIVED MESSAGE TO CHECK LEFT TAIL LIGHT, BRAKE LIGHT, BACK UP LIGHT AND TURN SIGNAL. I PURCHASED NEW BULBS TO REPLACE. WHEN I PULLED OUT THE BULB CARRIER, I NOTICED THAT THE AREA NEAR THE WIRING HAD MELTED AND THERE WAS DISCOLORATION. I CAN'T EVEN REMOVE THE PLUG HOUSING FROM THE CARRIER BECAUSE OF THE DAMAGE. I NOTICED THAT THERE WAS A RECALL IN OLDER MODELS FOR THE SAME EXACT ISSUE.

Major rust in the welded joints of the Steel subframe. Long crack development along the seams, could have led to catastrophic lost of control of vehicle if the breaks were not found. This is an apparent flaw with the C-Class Mercedes Benz and quite surprising to the Service Reps at my dealership that this has not been a recall issue, as they’ve replaced many. The repair is quite costly, over $5,000. There were no symptoms, warnings or messages. This was found when the vehicle was in for a 10k service. I have a video sent by the technician that show the inspection of the vehicle.

I was driving my 2012 Mercedes C250 through an intersection on 08/09/2021 when I first heard clunking noises in the rear of my vehicle. Every time I placed my foot on the brakes after that it continued to clunk until I took it to the Mercedes dealership for repair on 08/17/2021. The car had about 57,000 miles on it and was only nine years old, but the dealership said that the entire rear subframe of the vehicle had rusted and was close to completely separating from other parts of the vehicle. This was the first time I heard of any rusting in my vehicle, despite having the 2 rear tires replaced and alignment by the same place on 10/02/2020 (less than one year before). The service rep acknowledged that the car was well-maintained and that this was not due to any accident. This rusting was due to a manufacturing defect and has caused accidents in other Mercedes vehicles (https://www.carproblemzoo.com/mercedesbenz/c300/suspension-problems.php). It has resulted in recalls of rusted parts in both Europe (https://europe.autonews.com/article/19981026/ANE/810260839/mercedes-offers-guarantee-against-rust-for-30-years) and Canada (https://www.wheels.ca/news/mercedes-benz-recalling-vehicles-for-rust-problems/). Had I been travelling at a higher rate of speed when this piece failed, I could have been at risk of serious injury. This event occurred without any warning lamps or messages. The service for replacement and realignment was quoted at $4,358.71. Only after much argument did I receive a final bill of $3448.71. This was an unbelievable cost for replacing a part with a manufacturer defect. Mercedes headquarters tried to claim that the issue was due to exposure to snow and salt on the roads. This region rarely gets any snow. This lack of care for customer safety along with the fact that the dealership did not retain the part they removed from my vehicle after I had requested them to do so, left me realizing that Mercedes doesn't care about safety standards for their products.

TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ C250. WHILE DRIVING APPROXIMATELY 65 MPH, A SUDDEN LOUD BOOMING NOISE WAS HEARD. THE CONTACT NOTICED THAT THE SUN ROOF EXPLODED. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF WACO (1625 N VALLEY MILLS DR, WACO, TX), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 35,000. *BF CONSUMER STATED IT WOULD COST $8,000 TO REPAIR. VIN IS NOT VALID.*JB

TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ C250. WHILE DRIVING APPROXIMATELY 65 MPH, A SUDDEN LOUD, BOOMING SOUND WAS HEARD AS THE SUN ROOF EXPLODED. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF WACO (1625 N VALLEY MILLS DR, WACO, TX), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 35,000.

TIRE BRAND: SUMITOMO TIRE LINE: HTR A/S P02 TIRE SIZE: 225/40R18 92W COMPONENT: BUBBLE IN TREAD AREA, NOT SIDEWALL DOT NUMBER: LM6R2916 AND LM6R2416 TWO FRONT TIRES WERE PUCHASED NEW FROM AMAZON.COM IN MAY OF 2017 AND WERE IMMEDIATELY INSTALLED AND PUT INTO SEVICE. THERE WERE APPROXIAMATELY 30K MILES ON THE TIRES. THE FIRST FRONT TIRE FAILED IN JULY OF 2020 (LM6R2916) AND THE SECOND FRONT TIRE FAILED IN APRIL OF 2021 (LM6R2416). NO SPECIFIC EVENTS LED TO THE FAILURE OF EACH TIRE AND OCRRUED DURING NORMAL DRIVING. THE FIRST TIRE STARTED MAKING A WEIRD WOBBLING NOISE AT HIGHWAY SPEEDS. INSPECTION REAVEALED ON LARGE BUBBLE ON THE INNER PORTION OF THE TREAD. THE SECOND TIRE FAILURE OCCURRED AFTER STRANGE NOISES AS IF A ROCK WAS STUCK IN THE TIRE. INSPECTION REVEALED A SMALL BUBBLE FORMING ON THE INNER TREAD. ALL FOUR TIRES WERE REPLACED. A WARRANTY CLAIMED WAS ATTEMPTED WITH SUMITOMO. THEY REFUSED TO HONOR A WARRANTY AND TOLD ME THE VENDOR WOULD TAKE CARE OF THE WARRANTY CLAIM. AMAZON.COM REFUNDED THE PURCHASE PRICE.

WHENEVER A PASSENGER IS SEATED IN THE REAR SEAT (EITHER SIDE) AND THE CAR IS BRAKED OR EXPERIENCES A BUMP IN THE ROAD, THE SEAT BELT LOCKS AND STARTS TO TIGHTEN THEREAFTER WITH A RATCHETING SOUND EACH TIME THE PASSENGER MOVES EVEN A LITTLE BIT. THIS TIGHTENING CONTINUES UNTIL THE PASSENGER STARTS SUFFOCATING FROM THE PRESSURE. WHEN THIS HAPPENS, THE ONLY OPTION IS FOR THE PASSENGER TO UNBUCKLE THE SEAT BELT AND START OVER. BUT THEN THE PROCESS REPEATS ITSELF. MY FAMILY MEMBERS NOW EITHER REFUSE TO RIDE IN THE BACK SEAT OR THEY DO NOT BUCKLE THE SEATBELT AND HOLD IT IN THEIR HAND INSTEAD. OBVIOUSLY THIS IS A SAFETY ISSUE THAT COULD RESULT IN SERIOUS INJURY IN CASE OF AN ACCIDENT. I HAVE TAKEN THE CAR TO 2 DIFFERENT DEALERS ON 4 OCCASIONS BUT EACH TIME THEY HAVE TOLD ME THAT THE SEAT BELTS ARE WORKING AS DESIGNED. I HAVE ASKED OWNERS OF 2 OTHER MERCEDES CARS OF SIMILAR MAKE AND MODEL AND THEY HAVE ASSURED ME THAT THIS PROBLEM DOES NOT HAPPEN IN THEIR CARS. I HAVE ESCALATED THIS ISSUE TO MERCEDES DIRECTLY BUT THEY HAVE REDIRECTED ME TO ONE OF THE DEALERS AND NOW I CAN'T EVEN GET THEM OR THE DEALER TO RESPOND TO MY EMAILS.