general problems of the 2012 Mercedes Benz C250

The contact owns a 2012 mercedes-benz C250. The contact stated 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. - * 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.  .

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.

What component or system failed or malfunctioned, and is it available for inspection upon request? as I started my car from a cold start and even when starting the engine, the car was creating this tractor like sound. No system has failed but I read the camshaft adjuster and tensioner pulley has come out of site, which can ruin the engine. Has the problem been reproduced or confirmed by a dealer or independent service center? yes, it was audible by the dealer but I was told that it would be a normal issue on a cold start. Now they will charge $200 for a service diagnosis. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Mercedes Benz gave an extended warranty on the program for extension of 10 years but the problem has been happening for multiple people and it has been happening again that this warrants a recall over a poorly designed part that can destroy the car’s engine. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? no such codes or messages. Which is why this is so scary. This incident has been happening for the past 8 months or so and besides a letter about a warranty no such information.

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 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.

Faulty camshaft adjusters creating timing chain to stretch and tensioners to fail , causing excessive wear to the crankshaft and wear of the teeth resulting in catastrophic damage and complete engine failure ( I have not replaced this timing chain or camshaft adjuster yet but I can hear the timing chain rattling from the defective parts from manufacturer. ).

The engine in my car died and after inspection by a mercedes mechanic they concluded the failure was caused by faulty camshafts that have been common in the year and model this car. Mercedes has issued and extended warranty to cover the repairs recognizing this was a manufacturing issue but they are refusing to cover the full cost of repairing my car.

When accelerating to pass a vehicle the check engine light comes on and there is loss power. When this happens there is a huge potential of a crash. The car has to be shut off to try and reset this. When you are on the frwy this puts life at danger. The code is a p002 and if you research it mercedes is aware of this and is most likely a defective high pressure fuel pump problem that needs replacing but there have been no recalls. I have looked it up on you tube and has been on ongoing issue with no recalls as of yet. I am taking my car to dealer on 11/15/2021 for this issue which they will charge me for even though its a safety issue.

The contact owns a 2012 mercedes-benz C250. The contact stated that while driving at 50 mph, the check engine warning light illuminated. The contact was able to continue to drive the vehicle. The vehicle was taken to an independent mechanic who diagnosed that the variable valve timing solenoid had failed and needed to be replaced. The dealer was notified of the failure and advised the contact that he would be responsible for the cost of the diagnostic test. The manufacturer was notified of the failure through a voicemail message. The vehicle was not repaired. The approximate failure mileage was 52,000.

2012 mercedes C250 caught fire with no warning. Drove about 5 miles to the store and parked the car. A passerby said your car is on fire. Within minutes the entire front of the car was ablaze. The vehicle was towed to the city impound lot and has not been inspected by anyone.

I purchased this 2012 C250 mercedes from carmax of waldorf on 04/26/2017, with 20,046 miles on it. I informed carmax the engine light was on and the car was rattling at start. I also reported the oil dipstick was broken. When the car was returned, the dipstick was replaced, coolant light off and engine light was off; however, the rattling at start up continued. I reported the problem to carmax several months later and they pretty much denied fault and went as far to say the car is just cold and does that at startup. For further protection I signed with carshield as my wife drives the car. The car's rattling continued at startup and eventually became difficult to start. I took it to mercedes of arlington, virginia and they stated the timing gear and chain needed replacing. Carshield reported back to me that it was a preexisting problem and wouldn't fix it. Meanwhile, we were stuck with a car we were paying on with no one taking the blame. Following research, I found that this is a recurring problem with the 2012 C250 model but there is no recall. I eventually paid approximately $5000 for the engine to be repaired as the engine failed. The engine is currently rattling again; with the engine light coming on constantly. This seems to be a common problem, however, with to consequences and accountability.

Cold engine vehicle jerking I took it to mercedes of fort myers FL and they told me that they couldn't find the problem and I took it to so many other places and still can't find it I'm just wondering if it could be a recall.

Hello, this is a flaw in the mercedes m271 engine. After a certain amount of milage the camshaft and timing chain have been malfunctioning in most mercedes C250 cars. The dealer is asking $4400 for the repair, and mercedes did a recall on it years ago the camshaft adjuster solenoid is very faulty as it happens to most C250 vehicle owners. Ever since it happened to my own car every time I start it sounds like its about to blow up. The check engine stays on every day, sometimes it'll go in limp mode and I would carefully take the car off the highway.

When starting car, there is an audible 3 second engine rattle before the engine fully engages. Once the engine is running, the vehicle appears to perform normally. The mechanics have diagnosed it as failing camshaft adjusters. The repair also entails replacing the timing chains. Repairs to cost just over $5,000. Commentary from the mechanic indicates that this is a very common failure with this engine which typically occurs just beyond the warranty expiration. Online searches have confirmed his assertion. My vehicle has 80,000 miles and has never missed a service. I have every receipt of every service. A critical engine component such as this with such a costly repair procedure should not be this common. It is the result of a poor design and at least a portion of the repair costs should fall on the manufacturer.

Cam shaft adjusters went out and had to be repaired for normal use and drivers side door handle broke on the inside and needs to be replaced due to regular use.

Takata recall. . . Engine making a loud rattle when started.

Engine light came on , the car hesitated to turn on at times, sometimes had to press the gas pedal to have vehicle turn on. Took it to local benz shops that claimed to work on benz, they said their computer could not determine the code. So took it to the dealer in fort myers, FL. Was told it was the timing chain and the 2 cam shafts. Was quoted $5032. So had to other choice than to have them repaired. Only received the managers discount of $150 (wow). I read that many other owners have the same problem and they will not recall . They have recalled older models like 2006 for this same type of issue. But of course seems that Mercedes Benz has no prestige. Also note this car only has 41,000 miles in mint shape take good care of it. Very , very disappointed with Mercedes Benz, don't get stuck buying a vehicle that is not dependable. This model has too many issues.

While starting engine light came on. Would not go away. Took to merc dealer,told camshaft failure. Replacement cost 5865 dollars. Car serviced at dealership as per recommendations. Several blogs report similar issue by different customers. Similar issue in e 350 on 2006 model. Merc seems to aware of this issue.

Timing chain on the vehicle stretches out over time. This causes the vehicle to not start properly and can snap while driving and stop the car in the middle of traffic and driving. There is no service recommendation for the timing chain and usually starts giving trouble after the vehicle's warranty has expired. I have not had my car stop in traffic but there are many complaints on the Mercedes Benz forums.

The contact owned a 2012 mercedes-benz C250. While the vehicle was parked with the engine running, smoke suddenly appeared under the hood and flames were present under the vehicle. The fire department extinguished the flames. The vehicle was destroyed. The cause of the failure was not determined. The manufacturer was notified of the failure. The failure mileage was 94,572.

The cel came on and the engine was having a rough start . I took it to the repair shop and after using the star diagnostic system the diagnoses was camshaft adjusters in failure. The remedy replace the camshaft adjusters. Cost $3500. 00.

2012 Mercedes Benz C250w. Consumer writes in regards to oil coolant housing repair. The consumer requested to be reimbursed for work that was not done properly, or at all.

While driving on I-5 north coming from la jolla, my vehicle stopped accelerating, and suddenly stops in the middle of a busy freeway. I turned off the engine, then restarted after five second. After restarting my vehicle it started running again. This has happened three times already, and have brought my vehicle to the service center (on each occasion). Service report indicate transmission error. At times, the "slippery road" sign on my dashboard would blink even though the weather is hot or has not rain for ages.

This was not an accident, it is, in my opinion, a possible safety problem with the vehicle - turbo lag; throttle lag; transmission lag. I almost had two accidents due to the lag problems, and have attached a more detailed analysis for your review. Turbo lag: this is the time it takes for the car to go from its naturally aspirated power to the full power of the car at full boost/ peak boost is reached relatively low in the reverse range, but it is not instantaneous power like a naturally aspirated engine. Throttle lag: the drive by wire system has a bit of lag. Under certain conditions, I measured it at . 2 of a second or so. Whatever the value, there is always lag there, and we are very sensitive to it. However, driving ins mode vs e mode does make somewhat of a difference. Nonetheless, the car always starts out in e mode when I get in and start the car. We didn't purchase the car to always drive in s mode. Transmission lag: this I notice significantly and it is, in my opinion, probably the most annoying to me. You'll notice this when stomping the pedal to the floor and then doing the wait. . . Wait. . . Wait. . Downshift. Even if this engine was running only on its naturally aspirated four cylinders, the transmission should respond immediately to a sure footed stomp to the floor with the quickness, as does my four cylinder rav-4. However, the mb c-250 does not! in my opinion, you can reset the tcu all you want, the delay will remain.