2018 Mercedes-Benz GLC 300 Other or unknown Problems
- Complaints
- 20about this part
- Share
- 23%of 87 total for the year
- Median mileage
- 323miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 20 complaints about the other or unknown of the 2018 Mercedes-Benz GLC 300, 23% of the 87 complaints for this model year. Where a mileage was given, the median is 323 miles. 2 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My work heels got stuck between the carpet and gas pedal creating a driving hazard. There is a gap that is dangerous and after notifying the dealer and mb, they said that I should not wear work heels. I am a professional woman and wear business shoes. The heel got stuck causing me to drive with no shoes on the freeway.”
NHTSA complaint #11071995, filed 2018-02, 200 miles“My heel got stuck when pressing the gas pedal creating a safety hazard. My shoe was stuck and I had to drive barefoot. I took it to the mercedes calabasas dealership and they said there was nothing they could do and I should not wear heels when driving. I have driven for over 30 years with no issues.”
NHTSA complaint #11066706, filed 2018-02, 20 miles“Was driving down highway during clear sunny day on 12/21/18 at about 2:30 pm on I-10 east just outside of houston when my sunroof suddenly exploded outward. No signs of any debris being flung up or striking sunroof and there were no vehicles close to us at the time.”
NHTSA complaint #11163043, filed 2018-12, 10,500 miles“August 8, 2019 while parking my car in a gas station and going at a low rate of speed I experienced a sudden acceleration of my vehicle. I was unable to stop the car and as a result hit the side of a building. The car was towed and repaired. Mercedes corporate was notified and they sent a mechanic to check the car. On august 21, 2019 I was informed that mercedes found no evidence of a malfunction. I was also informed that I could not have the car evaluated by a third party. Around october of 2019 I had my vehicle returned to me from the collision center. …”
NHTSA complaint #11301580, filed 2020-01, 20,000 miles“Brought my GLC300 in for service once I received a recall letter from benz. I was told the recall service would take 2-3 hours. However, once I put the car in the shop (1/10/2019), I was told the unit will not update and a replacement unit was ordered. After days in the shop, I picked up my car but the new unit did not include android auto ( worked before ) which I paid for so I was told to leave the car overnight again to fix it. The next day, I called and no one knew what was going on and now, 3 days later, I still have not heard when my car is expected to be fixed. …”
NHTSA complaint #11170516, filed 2019-01, 323 milesRelated service bulletins
- 11035780Aug 4, 2026Complaint Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF 236.17 due to a global supply constraint. 236.17 ATF 1L and 5L…
- 11028809Feb 13, 2026Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the TIREFIT sealant bottle may not meet specifications. The…
- 10238424Jun 9, 2023In the MBUX weather app, the temperature is displayed in the wrong unit (Fahrenheit instead of °C, or vice versa). Temperature setting in Mmc mobile application settings…
- 10187785Jan 4, 2021The following complaints may be noted by the customer: - The MBUX multimedia system (A26/17) starts route guidance without user input and does not provide any audio notification…
- 10179966Jul 31, 2020Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 19% |
| 2024 | 3 | 14% |
| 2023 | 9 | 16% |
| 2022 | 7 | 11% |
| 2021 | 7 | 10% |
| 2020 | 15 | 22% |
| 2019 | 15 | 32% |
| 2018 | 20 | 23% |
| 2017 | 13 | 13% |
| 2016 | 21 | 16% |
Other parts of the 2018 Mercedes-Benz GLC 300
28 complaintsElectrical system
13 complaintsBody and structure
9 complaintsSeat belts
8 complaintsTransmission and drivetrain
8 complaintsFuel system
7 complaintsAir bags
6 complaintsBrakes
5 complaintsForward collision avoidance
3 complaintsSteering
3 complaintsVehicle speed control
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaints
← All problems reported for the 2018 Mercedes-Benz GLC 300
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology