Mercedes W205 problems: We have recently reviewed all of the known problems with the Benz C Class W204, which remains one of the most dependable Mercedes-Benz automobiles, particularly in its class.

There is a new Mercedes-Benz C-Class in town. It is the W205, and it was produced from 2015 to 2021. For newer models, there is significantly less information on known significant problems than there was for earlier models. After searching the internet and reading more than 15 forum postings from frustrated owners, we were unable to find a solution. Those concerns have been summarized in this article.

For anyone looking to buy a Mercedes C-Class W205, we hope you find the information in this post useful. The following is a list of the most frequent Mercedes W205 problems.

Engine and Gearbox Problems with the Mercedes W205

  • The dreaded “P052E: Positive Crankcase Ventilation Regulator Valve Performance” check engine code plagues C300 W205 C Class owners often.
  • A crankcase vent valve and an oil separator are included in the item that has to be replaced. Regarded avoid confusion, it’s referred to as a “vent valve” because of its location in the intake pipe. Connect this to the turbo’s intake system. It’s not a straightforward repair, but it’s covered by a warranty or an extension of that guarantee. It takes around five to six hours of effort and a new component costs roughly R5000 to replace. According to our findings, it generally occurs between 80 and 100,000 kilometers. If that’s all you’re worried about, the 4-cylinder M274 won’t be any difficulty.
  • Coil packs on the M177 AMG C63 models should be changed or operating properly if you’re considering purchasing one of these powerful vehicles. In the long run, it’s better to avoid the hassle of dealing with the occasional misfire.
  • Problems with the chain tensioner and fractures in the plastic inlet manifold and fuel filter housing have been reported for the 220d diesel W205.
  • Due to the small size of the 1.6 & 2.0l Mercedes petrol engines, thermostat problems are more common in these vehicles. The engine temperature indicator should always be monitored. This isn’t going to be a quick fix.
  • Owners of Mercedes-Benz vehicles indcate their engines oxygen (NOX) sensors need to be replaced more often than is deemed typical. Other Mercedes models have the same issues.
  • The 9G automatic gearbox is drawing criticism for its abrupt shifting from owners and the media. Resolving the problem of harsh upshifts may need a transmission valve body replacement.

See: What Meaning of Engine Light in Mercedes

Problems with the Body & Interior

  • The W205 C-interior Class’s noise has disappointed many owners.
  • Multiple owners complained about the sunroof shade sagging and drooping.
  • Loud creaking is often heard from door seals and sunroofs.
  • Comand infotainment systems have been reported to freeze by several owners. The issue is solved with a software update.
  • Door handle LED lights seem to be a regular problem.
  • “Bleeding” is a problem that affects certain W205s with MB-Tex interiors. Glossy spots appear on the seats.
  • A few complaints have been made about the central locking mechanism.
  • The 19″ Alloy wheels are likely to break when driven on difficult roads, according to owners.
  • As these cars have gotten older, many of them have worn out switches and torn seats.
  • When it comes to tire consumption, the W205 has a reputation for devouring them quickly. This is common on the C63 AMG’s rear tires, but it may be found in any of the car’s other trims as well. The problem with the front tires’ outer edges wearing out too soon seems to be related to the wheel alignment. The issue is solved by rotating the tires on a regular basis.
  • At full stop, several owners have complained about squeaky, loud brakes. Early versions’ brakes are also susceptible to premature failure.

Internal Electronic Issues with the W205

  • Several owners have reported that while approaching roadworks, their anti-collision system is triggered. Reflective road construction signalization must be recognized by the system as a potential collision risk.


Is It Comfortable To Drive The Mercedes-Benz C-Class W205?

Evidently not, as this in-depth report from shows. There have been no further reports of problems.

Can You Trust The Mercedes-Benz C-Class W205?

With 11 recalls occurring throughout its manufacturing period, it is undoubtedly not one of the most dependable vehicles, claim Consumer Reports as well as Motor Biscuit. According to what we’ve discovered in our investigation, people have a wide range of thoughts on the subject.

Is there anything else with the Mercedes W205 that might cause a problem?

  • Look for any signs of oil leaks while purchasing a W205.
  • W205 also has issues with its air conditioning. Make sure the air conditioner is operating properly.
  • Despite the fact that the W205 has no known issues with air suspension, as these cars age, pricey air springs as well as bags will need to be replaced. Consider this if you’re considering purchasing a W205 equipped with Airmatic.
  • A test drive should reveal any suspension noises, turbo issues (such as whistling or delayed activation), Bluetooth connection issues, and any AdBlue warning lights.

What Problems Did The W205 C-Class Have That Required A Recall?

11 recalls have been issued thus far, and you can see them here.

Final Thoughts and Suggestions

In the face of all of the Mercedes W205’s faults, we wouldn’t hesitate to purchase one. Purchase a car that has been well-maintained and has had all of its known concerns addressed under the manufacturer’s warranty. Not to mention how amazing it all looks, particularly the AMGs. Do not allow the abundance of information we have to provide deter you from having a great time with your Mercedes.


craig sandeman rotated

Drawing from extensive expertise in the used car parts industry, Craig Sandeman has established himself as a trusted authority in automotive repair. He possesses a deep knowledge of the challenges encountered by individuals seeking reliable car parts, making him a highly sought-after expert in this field.


Potential issues, causes, and solutions have been identified in the above article based on the experiences of car owners and repairers, as well as web materials such as forum blogs and technical support bulletins. This data is supplied exclusively for the purpose of reference. Only appropriately qualified persons should perform repairs and/or changes on your vehicles.

While it’s important to keep in mind, it’s also important to note that the amount of times anything is mentioned here should not be seen as a sign of its reliability or frequency. Various owners, driving in different ways, and caring for their vehicles in distinct ways will cause two identical vehicles to perform differently.

As previously said, this material is supplied primarily for reference reasons; nonetheless, we hope that by doing so, we will be able to supply you with essential knowledge that will allow you to make informed decisions whenever you encounter any of the aforementioned setbacks.

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