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7.4

pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
7,197 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2016 Mercedes-Benz GLC300 fuel system problems

fuel system problem

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2016 Mercedes-Benz GLC300 Owner Comments

problem #17

Oct 092023

GLC300

  • miles

A D V E R T I S E M E N T S

I have noticed extreme gas odors in the cabin of my car, the gas odor is so horrific that even when I exit the car either outside or in my garage the odor remains. My car is housed in my garage and I'm very concerned regarding these fumes which fills up my garage because my home is attached. I researched on a web site that there has been complaints and consequently a recall ( 21V961000) ON 12-12-2021 FOR GLC 300,2016, But my vehicle did not receive a recall notice. I am concerned regarding possible fire or illness related to fumes being inhaled.

- Willoughby, OH, USA

problem #16

Mar 202023

GLC300

  • miles
What component or system failed or malfunctioned, and is it available for inspection upon request" Crank case vent valve malfunctioned 2 years ago and was replaced. Now it is failing again. Reports online from other owners show this part failing about every 2 years / 20k miles. This is not a wear item. Yes it is in my car How was your safety or the safety of others put at risk? It is part of the fuel system so it can potentially damage the car Has the problem been reproduced or confirmed by a dealer or independent service center? Yes Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? It has been inspected by the dealer Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear" There is a check engine light that appears right at failure, not before.

- South Windsor, CT, USA

problem #15

Jan 302023

GLC300

  • miles
Raw fuel smell when vehicle is at idle. Breaks are very loud at low temperatures. Very squeaky like metal on metal yet the brakes are like new from Mercedes dealership.

- Grimes, IA, USA

problem #14

Dec 212022

GLC300

  • miles

A D V E R T I S E M E N T S

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.

- Brooklyn, NY, USA

problem #13

Oct 262022

GLC300

  • miles
Crankcase ventilation valve issues

- Willow Grove , PA, USA

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problem #12

Sep 162022

GLC300

  • miles
The vehicle needs a new PCV Valve / hose, as well as a new turbo charger

- Tacoma, WA, USA

problem #11

Aug 182022

GLC300

  • miles

A D V E R T I S E M E N T S

While driving on the NYS Thruway last week, when I accelerated to pass another car, my engine bucked and kicked followed by the "check engine" light coming on.In very heavy traffic, I was able to pull to the shoulder. I called my service garage and they suggested I not drive the car for safety reasons. When the tow truck arrived, I briefly started the car with the same bucking and kicking from the engine. The car was taken to my regular garage where the "check engine" codes showed issues with the fuel injector and fuel injection system. I was told there is an existing RECALL CAMPAIGN # 2022030003 for the same year, make and model as mine but, my VIN is not part of that RECALL. I would like your help as I do not believe Mercedes-Benz is being fair or equitable in this RECALL. ThankYou

- Canandaigua, NY, USA

problem #10

Jul 292022

GLC300

  • miles
Engine light came on, test showed P052E error. Crankcase valve needs to be replaced. 60,110 miles. Well maintained, oil changes and services always performed. Properly maintained.

- East Setauket, NY, USA

problem #9

Sep 172021

GLC300

  • miles
My MB GLC 300 has run out of gas three times. The first two times the car showed it still had 40 miles before fill up and the gas warning light never came on. I took the car in for repair to see if the Fuel level sending unit had stopped working or the float was stuck. The date was March 2020 and at that time the car was under warranty. I was told to make sure I filled up the tank when the fuel indicator reached 100 miles. I was told by the dealer there was nothing wrong and the service department had run a diagnostic. I had never been told that I needed to fill up when a car gauge read 100 miles. Thirty or forty maybe but 100 seemed odd. Two weeks ago I had the gas leak repaired which was the result of the class action law suit. Yesterday I again ran out of gas again. The gas gauge showed 3 bars and 100 miles before next fill up. No gas low warning light came on. I was able to get a friend to bring a gallon of gas so I could drive somewhere to fill up. After I filled the gas tank the gas gauge completely stopped working. The miles to fill up is zero. I have tried resetting the ODM and have checked all the fuses related to the gas tank. This could have been a dangerous situation.

- San Diego, CA, USA

problem #8

Feb 072020

GLC300

  • miles
Often after starting the car, inside the car there is a gas smell that we have to closed the vents as it becomes unhealthy until the smell goes away, it last up to 10 minutes. I have taking the car to my mechanic who specializes on Mercedes and could not find any leaks and/or anything wrong. My other issue is that during the raining season when I put my foot on the breaks it makes this loud sound like an airplane landing that I have to release and press and release and press so the car will slow down. My mechanic have done multiple inspections and finds nothing wrong. My third issue is the suspension, driving on freeways at speeds over 55 mph I feel a lot of shaking between front wheels and I can feel every single bump. Again, my mechanic has found nothing wrong that even checked for recalls and has told me that there are no recalls for this vehicle. Obviously there has to be a recall issue and the one more concerning is the gas smell inside the car at start up.

- Elk Grove, CA, USA

problem #7

Jan 102021

GLC300

  • miles

A D V E R T I S E M E N T S

Fuel smell entering cabin after start up, fuel line on drivers side near steering column leaking, googled problem and seems to be common occurrence with Glc300, and Mercedes C class but no recall, this is the same problem as the Mercedes metris has but there was an recall issued for that model

- Dorchester, MA, USA

problem #6

Mar 022020

GLC300

  • 32,900 miles
Leakage in fuel system ( high pressure pump). On glc 300. Gas small inside the car. Company denied investigating or providing my refund for repair. I feel this is totally safety failure of the vehicle. So my current mileage is 32908 and it is 2016 model. I bought this vehicle because the company claims for its highest standards of safety. So I want the authority to help me in investigating this issue and provide me assurance and coverage for any kind of safety issues in future. Also, I want to report some minor issues on breaks. I see sometime the there is a delay in action. Hope this will be investigated for preventive actions and get my refund for fixing this kind of safety related matters. Its is total responsibility of manufacturer to deliver the safety vehicle. Not to escape by saying warranty clause

- Irvine, CA, USA

problem #5

Jul 142018

GLC300

  • 28,000 miles
When I start my car there is strong gas odor in the cabin for the first 3-4 hours of driving. Also there is a moldy smell in the warmer months as well

- Hobbs, NM, USA

problem #4

Sep 012019

GLC300

  • 50,000 miles
I purchased this Mercedes new in 2016, the brakes have squealed ever since when cold 32 degrees or less.. once in awhile when warm. 2 we smelled gasoline, we took it to a repair shop, they found two fuel hoses sprayed gas in a mist especially when cold.. 3 there are 3 recalls open on this Mercedes, I took it in when the air bag recall arrived at our house, I was told we don't have parts. Our car is out of warranty, it has 56000 miles. I take it to a repair shop run by certified Mercedes technicians. Thank god we didn't have a fire with the gas leak. I did smell the gas when moving thru the ventilation system and when sitting and the smell was all around the car.

- South Bend, IN, USA

problem #3

Dec 012016

GLC300

  • 10,000 miles
The contact owns a 2016 Mercedes-Benz Glc300. The contact noticed a strong fuel odor inside and outside the vehicle. The failure occurred periodically. The vehicle was taken to zt motors of fort walton beach (1000 N beal pkwy nw, fort walton beach, fl 32547, (850) 863-8372) to be diagnosed, but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 10,000.

- Niceville, FL, USA

problem #2

Nov 132018

GLC300

  • 0 miles
On cold start (7am, between 60 and 70F degrees), there's a strong gas smell on both the cabin and outside the vehicle. No check engine light is on or any other indicator of a failure. There's no visible leaks on the underhood or my driveway. Really scared to take my kids to school unless mb solve this problem. Vehicle still under warranty, mb dealership shouldn't charge for the inspection. Taking vehicle to el paso tx dealership. Will see what happens.

- El Paso, TX, USA

problem #1

Apr 082016

GLC300

  • 1,450 miles
Three weeks after buying the Glc300 4matic the engine misfires, got stranded in ac New Jersey, the car was at the dealer for 3 weeks, they replaced all fuel injector/coils and it kept happening, then the fuel module got replaced and it ran fine for 4 weeks and the problem came back, got stranded in boston, the car was at the dealer for 2 weeks, this time they replaced the engine control unit (today 4-22-16), I'm picking it up tomorrow. I own the car for 12 weeks and only been able to drive it 7 weeks, so disappointed in Mercedes Benz.

- Bronx, NY, USA

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