2012 Mercedes-Benz C250: engine failure

Filed Dec 30, 2024 · Electrical · 143,000 miles · CA

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.

Filed Oct 13, 2022 · Engine · CA

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. )

Filed Aug 26, 2021 · Engine · MD

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.

Filed Dec 30, 2020 · Engine, Fuel system · 117,000 miles · SC

I have been having issues with my vehicle since I purchased it. Starting with me not having enough power from a start, in an attempt to gain enough power to drive at a safe speed from the start, as if the vehicle lags & no matter the gasoline or service, the problem never corrects. When I'm trying to gain speed to maintain with the flow of traffic safely the vehicle lags notably before gaining speed. I'm now having to replace the engine bc the oil coolant hose burst while I was driving on the highway with my child in the car. My check engine light activated but the only notice displayed on the dash was the engine coolant when it was low. When the hose burst while I was driving about 60mph I heard a pop sound under the hood, saw smoke coming from the exhaust, then a clanking noise under the hood that got louder & louder until I was able to pull off of the highway, & then I noticed a very large amount of oil on the ground that left a trail along the ground from my vehicle. That was very dangerous as my vehicle lost power during that incident. I'm told by the mechanic, the engine has to be replaced. This happened without a warning. The mercedes benz is supposed to be a safe & reliable luxury vehicle & not a nightmare to have for the owner.

Filed Sep 9, 2020 · Engine · 38,000 miles · CA

2012 c250 purchased new from a dealer. Rattling on starting engine and check engine light is on. Spoke with my mechanic and it is due to faulty camshaft adjusters. Repair will cost $5000 plus and involves replacing the camshaft adjusters, timing chain and sprockets. This problem just started 10 days ago with approximately 38,000 miles on the odometer. Seems to be a well known problem and not an expense I can really afford on reduced income due to covid lockdown. I am very worried about driving this car as this problem can result in catastrophic engine failure and I am regularly on the freeway. Driving this car is no longer safe. I purchased a mercedes thinking their reputation for safety, quality and engineering would preclude such issues.

Filed Aug 19, 2020 · Engine · 100,000 miles · CT

I was driving a of maybe ten minutes on the highway . As soon as I was off the highway ; the vehicle suddenly stopped without warning of a check engine light .(malfunction). Days before that the vehicle was serviced at a mercedes benz dealership without any issues. After their research I've been told that I need a new engine . There are complaints after complaints listed online in regards to engine failure, cam shaft adjusters etc. This is something that clearly needs to be handled . This could have caused a life threatening situation.

Filed Apr 14, 2017 · Engine · 57,000 miles · FL

Tl* the contact owns a 2012 mercedes-benz c250. While attempting to start the vehicle, the contact noted a choking and knocking sound in the engine. The check engine indicator also illuminated. The vehicle was taken to a dealer where it was diagnosed that the cam shaft tensioner failed and needed to be replaced. The vehicle was repaired, but the failure recurred. The check engine indicator did not illuminate this time. The vehicle was taken to the dealer again where it was diagnosed that the cam shaft tensioner on the other side of the engine failed and needed to be replaced. The vehicle was not repaired. The contact attempted to notify the manufacturer, but the contact was placed on hold for 1.5 hours and then disconnected. The approximate failure mileage was 57,000.