33 of the 305 complaints filed about the Mercedes Benz GLC300 are about the other systems — 11% of everything owners reported. The worst model year for it is 2016.
33
Complaints
11%
Share of all complaints
1
Crashes
0
Fires
UNKNOWN OR OTHER
SUNROOF will not closed , refuse to close on my car
NHTSA complaint #11696259 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
My vehicle goes into neutral while driving which poses a major risk.
NHTSA complaint #11669974 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
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 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Sunroof. The sunroof is not opening properly. It sounds Ike the window is going to come off of its track. Making a loud noise.
NHTSA complaint #11587031 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
A notice was issued for a common issue with many Mercedes Benz models. https://static.nhtsa.gov/odi/tsbs/2023/MC-10243565-0001.pdf A notice was issued for a common issue with many Mercedes Benz models. [XXX] While the problem is well known, all dealers are reporting the part is in back order without any visibility on when it would be available. This is forcing drivers, including myself to continue to drive the car and potentially creating a big damage to the car. I took the car to Mercedes-Benz of New Rochelle in NY state. I called multiple dealerships in the tri-state are and they all mentioned that the issue was well known without any ETA. Also with a check engine light the car can't pass safety/emission inspection and is not sellable. I bought a new car, can't sell this car and have 0 visibility on when I can get it fixed to sell it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11586617 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
See attached document for complaint
NHTSA complaint #11557612 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
I own a 2016 Mercedes Benz GLC 300 and I’ve noticed that a strong gas smell when I start the car during cold weather. You notice the smell outside and inside the cabin as well as it comes in through the vents.
NHTSA complaint #11556614 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
According to NHSTA ID 21V197000 bulletin, my 2016 GLC 300 qualifies for recall related to sunroof safety matter. My sunroof is loose and dealer said since your organization didn’t include my VIN for this recall, they will not address it. Can you please add my VIN. I’m experiencing exactly as described in your recall bulletin. Thank you!
NHTSA complaint #11554552 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
P052E code showing on the diagnostic machine. This is an issue with the positive crankcase ventilation regularly valve. I’ve read that this is a common issue with my vehicle that often happens after the warranty expires.
NHTSA complaint #11543342 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Premature failure of the PCV assembly at 70,000 miles. Caused vehicle to turn off and sometimes engine to shake.
NHTSA complaint #11538409 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
While driving my car, I tried to open the Panamatic sun roof to get air. As I pushed the button to open the sun roof, it opened a crack on the the driver side and the other side of the sun roof stayed closed. At this point I heard a crashing assembly noise and the whole sun roof got stuck uneven and crooked. Driving on highway, I was shocked and felt in danger getting to an automobile accident and getting hit by other cars or any loose parts hitting them. Getting myself together, I pulled over and got out of the highway. I parked and tried to understand what happened. I tried to close the partially opened on one side glass roof with no avail. It was totally stuck. I parked my car and went home. A day after the incident, I had the car towed to an authorized repair shop for investigation and repair. It took two days to repair and replace all of the roof railing assemblies. A copy of the invoice is enclosed. It was a very dangerous and traumatic experience for me and I truly felt in this incident, I could have hurt other people or got myself in a bad accident.
NHTSA complaint #11513201 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
vent valve po52e71 - I have found thousands of the same issue with my car online. Mercedes covers this piece as an emission piece for Deisal Engine but not gas engines. This peice needs to be recalled and covered under emissions warranty asap.
NHTSA complaint #11504950 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
The Panoramic roof glass exploded suddenly. Throwing shattered glass pieces on the Highway and into the cabin of the car. No object or environmental conditions caused this incident. It just exploded while driving ~ 50mph
NHTSA complaint #11497913 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Driving down the expressway at 4 AM when the car had a message and read saying do not change gears alert. I hardly got over to the emergency lane when all systems did not work. The axle , differential and oil pan broke. Had to be towed after waiting 2 1/2 hours for a tow.
NHTSA complaint #11490420 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
The Crank Ventilation code is showing up for a code and this has been happening to all of these GLC coupes. The check engine light comes on.
NHTSA complaint #11481537 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
I got the P052E error at about 50k miles. Many GLC 300s apparently have this issue. I need a new crank case valve I believe and they put the part in a terrible place. Dealers charging over $1k in just labor.
NHTSA complaint #11470126 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Faulty crankcase vent valve causing oil to leak into electrical lines of engine with car at 42,000 miles. This was confirmed by dealer. Multiple other Mercedes Benz car owners have had this issue with the crankcase vent valve with simple internet search. Fortunately, the car was taken to dealer before any event occurred but this a safety issue.
NHTSA complaint #11469662 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
crankcase ventilation valve replacement required confirmed by the dealer. check engine light came on as notification. It appears to be a very standard problem on the the glc300 when they hit 60,000 miles and are out of warranty. $2000 repair
NHTSA complaint #11468506 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Crank case vent valve went out. Then turbo went out after that. Car smells of gasoline inside cabin.
NHTSA complaint #11463663 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
check engine light comes one and give code: P052E - Positive Crankcase Ventilation Regulator Valve This is a faulty part that commonly breaks down in all Mercedes GLC 300 and C class. It's part of the emissions system and should be covered under the federal warranty. However, Mercedes won't cover it and charges $3000 for the repair. This is unsafe and unfair practice as they're selling vehicles that they know will break down eventually and could cause harm to their "customers".
NHTSA complaint #11461583 — an unverified report by a vehicle owner.