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Mercedes-Benz GLC 300 4MATICModel year report

2024 Mercedes-Benz GLC 300 4MATIC Problems

Compared with other Mercedes-Benz GLC 300 4MATIC years

Too new to compare

Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated

Complaints
8filed with NHTSA
Median mileage
31,153miles, 1 complaints with mileage
Recalls
3campaigns 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
27 mpgcombined, 2.0L 4-cyl · hybrid AWD · 24 city / 32 hwy

Sources: NHTSA records for the 2024 Mercedes-Benz GLC 300 4MATIC (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 8 consumer complaints for the 2024 Mercedes-Benz GLC 300 4MATIC. The part named most often is forward collision avoidance, with 4 complaints (50% of the total), followed by body and structure (3) and back-over prevention (2). 1 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 31,153 miles. Of all complaints, 1 an injury, according to the filers. NHTSA lists 3 recall campaigns and 144 technical service bulletins for this model year. Forward collision avoidance complaints overlap with 3 technical service bulletins filed under the same part. Body and structure complaints overlap with 1 recall campaign covering the roof and pillars and 8 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

Forward collision avoidance: “While carrying my carbon fiber bicycle on a rear hitch mounted bicycle carrier, the vehicle severely and violently applies the brakes and swerves either left or right or both. This catastrophic maneuver has put me and other drivers in a non avoidable highly calamity. This “AUTO” maneuver happens dozens of times in during a fifteen mile trip to local bicycle trails. Dealer replaced the Trailer Recognition Module 9-24-2025. As expected, dangerous situation remains. Happens every opportunity when carrying bicycles. First exhibited after purchase 6-29-2024 to current.”

NHTSA complaint #11690219, filed 2025-09

Body and structure: “The rear lift gate closes unexpectedly when standing behind the vehicle and loading or unloading the cargo area. The keyless soft close activates even though there is no foot movement, or when there is minimal movement. This happens without warning. On several occasions this has happened to me, and also to my wife. It has caused minor bruises, but more importantly we are both older and it has been difficult extricating ourselves and reaching the control to raise the gate again. …”

NHTSA complaint #11749171, filed 2026-07

Back-over prevention (rear camera): “New car was purchased from Rocklin Mercedes in California. Soon after the rear back up camera kept opening and closing when the car was in drive and at random times. The was then taken into Autobahn Motors in Belmont California to have the problem checked. I was told Mercedes was working on a software fix at which time the service tech never wrote up the problem. In 2025 the car again was taken into Mercedes for service at which time I brought up the same issue and was told most newer cars have this problem and there is NO fix, even the loaner they gave me had the same problem.”

NHTSA complaint #11716659, filed 2026-02

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 31,153 and 31,153 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: 31,153 miles.

Complaints by year filed

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

202520267
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 2024 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 AWD2.0L 4-cyl · hybrid9-speed automatic243227$3,050
GLC300 4matic Coupe AWD2.0L 4-cyl · hybrid9-speed automatic243026$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 2024 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. 144 on record; the latest 10 are shown.

See all 144 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 2024 Mercedes-Benz GLC 300 4MATIC have?

NHTSA recorded 8 consumer complaints for the 2024 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 2024 Mercedes-Benz GLC 300 4MATIC is reported most often?

Forward collision avoidance is named most often, in 4 complaints (50% of the total), followed by body and structure with 3.

Has the 2024 Mercedes-Benz GLC 300 4MATIC been recalled?

NHTSA lists 3 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2024 Mercedes-Benz GLC 300 4MATIC get?

The EPA rates the 2024 Mercedes-Benz GLC 300 4MATIC (GLC300 4matic, 2.0L 4-cyl · hybrid) at 27 mpg combined, 24 city and 32 highway, with an estimated annual fuel cost of $3,050 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2024 Mercedes-Benz GLC 300 4MATIC reported?

Among the 1 complaints that include a mileage, the median is 31,153 miles and the middle half falls between 31,153 and 31,153 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.