2016 Mercedes-Benz GLC300 engine problems

Related recalls

• Recall 17V114000Feb 23, 2017307,629 vehicles
  ELECTRICAL SYSTEM:STARTER ASSEMBLY · ENGINE AND ENGINE COOLING:ENGINE

  Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2015-2017 C300 4Matic, C300, CLA250, CLA250 4Matic and CLA45 AMG vehicles, 2017 C300 4Matic Cabrio, C300 4Matic Coupe, C300 Cabrio, C300 Coupe, E300, E300 4Matic, E400 4Matic Wagon, E43 AMG 4Matic, GLA250, GLA250 4Matic and GLC300 4Matic Coupe vehicles and 2016 C350e and GLC300 vehicles and 2016-2017 C450 4Matic AMG Sport and GLC300 4Matic vehicles. In the event that the engine or transmission cannot turn over, the starting current limiter may overheat from the repeated attempts of the starter motor attempting to start the vehicle.

  Risk: If the starting current limiter overheats, the surrounding components can melt, increasing the risk of a fire.

  Remedy: MBUSA will notify owners, and dealers will install an additional fuse in the electrical line to the starter, free of charge. The recall began August 31, 2017. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2017080002.

What owners say

1. Filed May 6, 2025CAEngine

   Fuel Rail and fuel injectors Leak contacted Mercedes cooperate to investigate why my car. VIN did not list according to campaign no [phone removed] to replace the fuel Ra and fuel injectors and a Ssfety & Emissios recall campaign that covers 139 Model year 2016-2030 that include my vehicle CLC-Class. My car is experiencing fuel injectors defects but my VIN number was not flagged

   NHTSA complaint #11659257 · source
2. Filed Jan 13, 2025GAEngineTransmission & Drivetrain

   The contact owns a 2016 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the check engine warning illuminated. The contact stated that the vehicle was taken to the Emissions Center, and the vehicle failed the Emissions test. The vehicle was taken to the dealer to be diagnosed. The dealer retrieved DTC: P052E (PCM has detected an inappropriate degree of pressure from the crankcase pressure sensor). The vehicle was not repaired. The manufacturer…

   NHTSA complaint #11635618 · source
3. Filed Oct 3, 202490,000 miFLTowedEngine

   The contact owns a 2016 Mercedes-Benz GLC300. The contact stated that while driving 45-50 MPH, the engine experienced rough idling and the vehicle was shaking violently. Several unknown warning lights were illuminated. The contact pulled over and turned off the vehicle. The vehicle was towed to an independent mechanic, who determined that cylinder #1 had a cracked piston and the engine needed to be replaced. The vehicle was then towed to another independent mechanic, who…

   NHTSA complaint #11617878 · source
4. Filed Sep 13, 2024NYEngine

   Check engine light on-pvc failure. Code PO52E-71as determined by reliable repair shop. Recommended to have vehicle repaired by dealer. Shop advised part is vital to emissions system.

   NHTSA complaint #11614470 · source
5. Filed Aug 5, 202470,000 miNJEngine

   The contact owns a 2016 Mercedes-Benz GLC300. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to the local mechanic who diagnosed that the crank case ventilation sensor was faulty and needed to be replaced. The vehicle was not repaired. The local dealer was not contacted. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 70,000.

   NHTSA complaint #11606449 · source
6. Filed Aug 3, 2024CAEngine

   When driving the car, the engine began to violently shake and fail. The engine ended up having a piston failure due to a small wrist pin and needed the entire engine block replaced. I was lucky that I was not on the freeway or in a more dangerous spot when the engine failed while driving.

   NHTSA complaint #11606306 · source
7. Filed Jun 2, 2024CTEngineOther / Unknown

   Diagnose: code P05271 - Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction. Mercedes Benz extended warranty to 15 yr / 150k miles for intake assemble which resolve this issue. Like to acquire a confirmation letter from Benz to cover the repair by the Benz dealer

   NHTSA complaint #11591965 · source
8. Filed Nov 6, 2023OKEngine

   The P052E error has popped up which requires the replacement of the PVC assembly. This is a known issue with these engines and causes the engine to run erratically. Mercedes knows that the issue is common. Please investigate and issue a recall if applicable.

   NHTSA complaint #11553798 · source
9. Filed Aug 28, 2023CAEngine

   I lost power on while driving at speed and almost got rear-ended before pulling over. I had to tow the car to a mechanic. After diagnosis it turned out the pistons are cracked and had to be replaced as well as the rod bearings. The pistons have a very abnormal burn pattern and rod bearing wear per my mechanic. This is a beautiful car and I take above average care of it. No car sold in the US should have pistons crack at such a short amount of miles. I believe Mercedes Benz…

   NHTSA complaint #11541304 · source
10. Filed May 3, 202330,000 miILEngine

    The contact owns a 2016 Mercedes-Benz GLC300. The contact stated that the check engine warning light was illuminated. The vehicle was taken to dealer, where it was diagnosed that the crankcase ventilation system needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the dealer, where the diagnostic result was confirmed. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was opened.…

    NHTSA complaint #11520208 · source
11. Filed Mar 4, 2023MOEngine

    2016 GLC300 - Fault code P052E71 positive crankcase ventilation regulatory valve displayed on console. I reset code and it came up again in a few days. Plaza Mercedes in St.Louis stated this is a common failure that requires digging deep into the engine. I had valve replaced 15SEP22 costing $1614.36. Invoice is attached.

    NHTSA complaint #11510134 · source
12. Filed Dec 29, 2022NYEngineFuel, Hybrid & EV Propulsion

    Check Engine light P052E came on while driving. No collision, normal conditions other than first very cold night of the season. Looked it up and seems to be a common issue with this model.

    NHTSA complaint #11499425 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology