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Mercedes-Benz GLC 300 4MATICModel year report

2023 Mercedes-Benz GLC 300 4MATIC Problems

Complaints
9filed with NHTSA
Median mileage
39,000miles, 1 complaints with mileage
Recalls
4campaigns on record
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA crash rating
—no overall rating published
EPA fuel economy
22 mpgcombined, 2.0L 4-cyl AWD · 20 city / 26 hwy

Sources: NHTSA records for the 2023 Mercedes-Benz GLC 300 4MATIC (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 9 consumer complaints for the 2023 Mercedes-Benz GLC 300 4MATIC. The part named most often is other or unknown, with 4 complaints (44% of the total), followed by brakes (2) and forward collision avoidance (2). 1 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 39,000 miles. Of all complaints, 2 an injury, according to the filers. NHTSA lists 4 recall campaigns and 162 technical service bulletins for this model year. Other or unknown complaints overlap with 6 technical service bulletins filed under the same part. Brakes complaints overlap with 2 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Other or unknown: “When loading groceries in my trunk, the door randomly closes on my head. The last time this door closed while we were loading, I tried stopping it with my hand, by holding it, so my spouse doesnt get smashed, and it will not stop at all. There needs to be a safety feature installed to stop this trunk from closing if a person is underneath it. I fear that a child or an elderly person wont be able to move fast enough and will be severely harmed by this.”

NHTSA complaint #11699574, filed 2025-11

Brakes: “The contact owns a 2023 Mercedes-Benz GLC 300 4MATIC. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the brake pedal felt as if it had released, and the vehicle failed to stop as needed. The contact stated that the failure was a recurring failure. The dealer was contacted but could not duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 39,000.”

NHTSA complaint #11752677, filed 2026-07, 39,000 miles

Forward collision avoidance: “The issue is regarding the “Traffic Sign Assist” (Owner’s Manual page 221) feature of the Adaptive Cruise Control System. Vehicle will be made available if requested. The function of the Traffic Sign Assist is to monitor roadside Speed Limit signs and the cruise control will increase or decrease speed to stay within the permissible legal speed limit. …”

NHTSA complaint #11732594, filed 2026-04

Body and structure: “The rear door randomly closes with force unexpectantly. We contacted the Mercedes dealer where the car was purchased and is serviced. They responded it can not be fixed and was an ongoing concern of many owners”

NHTSA complaint #11664589, filed 2025-06

Mileage when problems were reported

100% of the 1 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 39,000 and 39,000 miles.

0%0–100%10–25100%25–500%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (1 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 39,000 miles.

Complaints by year filed

This model year is less than 4 years old, so a trend is not meaningful yet.

202520265
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2023 Mercedes-Benz GLC 300 4MATIC version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
GLC300 4matic Coupe AWD2.0L 4-cyl9-speed automatic202622$3,750
GLC300 4matic AWD2.0L 4-cyl · hybrid9-speed automatic233126$3,150

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2023 Mercedes-Benz GLC 300 4MATIC → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 162 on record; the latest 10 are shown.

See all 162 bulletins →

Other model years of the Mercedes-Benz GLC 300 4MATIC

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
202665,7693—26—Too new
202510—3—26—Too new
2024831,1533—27—Too new
2023939,0004—22—Too new

All Mercedes-Benz GLC 300 4MATIC model years

Frequently asked questions

How many NHTSA complaints does the 2023 Mercedes-Benz GLC 300 4MATIC have?

NHTSA recorded 9 consumer complaints for the 2023 Mercedes-Benz GLC 300 4MATIC as of Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2023 Mercedes-Benz GLC 300 4MATIC is reported most often?

Other or unknown is named most often, in 4 complaints (44% of the total), followed by brakes with 2.

Has the 2023 Mercedes-Benz GLC 300 4MATIC been recalled?

NHTSA lists 4 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2023 Mercedes-Benz GLC 300 4MATIC get?

The EPA rates the 2023 Mercedes-Benz GLC 300 4MATIC (GLC300 4matic Coupe, 2.0L 4-cyl) at 22 mpg combined, 20 city and 26 highway, with an estimated annual fuel cost of $3,750 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2023 Mercedes-Benz GLC 300 4MATIC reported?

Among the 1 complaints that include a mileage, the median is 39,000 miles and the middle half falls between 39,000 and 39,000 miles; 100% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.