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10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
1,185 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.

2018 Mercedes-Benz GLC300 engine problems

engine problem

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2018 Mercedes-Benz GLC300 Owner Comments

problem #6

Jan 052023

GLC300

  • miles

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

P052e crankcase vent malfunction

- Layton, UT, USA

problem #5

Dec 262022

GLC300

  • miles
Check engine light came on with code P052E : Positive Crankcase Ventilation Regulator Valve Performance.

- San Mateo, CA, USA

problem #4

Apr 102022

GLC300

  • miles
P052E postive crankcase ventilation regulator valve

- Windsor, CT, USA

problem #3

Apr 012022

GLC300

  • miles

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

P052E issues

- Parsippany, NJ, USA

problem #2

Oct 012018

GLC300

  • 6,000 miles
'the first incident - occurred in August when I stopped at a stop-light. I started driving when the light turned green and the car was accelerating as normal. There were cars behind me accelerating as well as normal. My SUV automatically shifted from drive to neutral by itself as I continue to accelerate to move with the normal flow of traffic. The vehicle automatically slowed down to neutral '2nd incident - the same issue occurred again within two weeks I was driving on the long island expressway at approximately 40 miles per hour in heavy traffic which had commercial trucks. The vehicle automatically shifted from drive to neutral on its own. This nearly caused a pile up on the lie with the car immediately behind me running into the back of my car. '3rd incident - I stopped at a stop sign waiting for the light to turn green in order to make a right turn. I made a right on very busy street and the car started shutting down and decelerating instead of accelerating. I urgently steered the car over to the side of the road and turned it off. I waited for a few minutes and restarted the car and it seem to have been working. '4th incident - on Sunday September 18th, the vehicle could not start so I had to call Mercedes Benz roadside assistance. The engine didn't make any attempt to start. The lights didn't turn on. There was absolutely no response to a keyless or manual start. 'September 29th ' I picked up the SUV and it drove well without any incidents 'October 1st ' the vehicle automatically shifted from drove to neutral after making a right turn on a very busy street which nearly caused an accident with another car hitting me in the rear. This nearly caused a 'pile up' because other cars where urgently slamming their breaks behind me to prevent from hitting the car in front of them. I was dropping my son off to school and he was sitting in the back seat.

- Miller Place, NY, USA

problem #1

May 122018

GLC300

  • 1,110 miles
The contact owned a 2018 Mercedes-Benz Glc300. While driving 55 mph, the rear driver's side tire was punctured. The contact stated that the vehicle was equipped with 18 inch run flat tires. The contact pulled the vehicle over to the side of the road. After waiting approximately 70 minutes on the side of the road, the tire burst into flames. The contact was unable to provide the tire manufacturer, tire line, complete tire size, or dot number. The contact stated that the fire originated in the wheel well of the vehicle and was not necessarily caused by the tire puncture. The fire department was contacted and was able to extinguish the fire. A fire report and a police report were filed. The vehicle was destroyed and towed from the scene. There were no injuries sustained. The dealer and the manufacturer were notified of the failure. The approximate failure mileage was 1,110.

- New Rochelle, NY, USA

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