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Mercedes-Benz C300Model year report

2023 Mercedes-Benz C300 Problems

Complaints
22filed with NHTSA
Median mileage
3,900miles, 7 complaints with mileage
Recalls
9campaigns 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
25 mpgcombined, 2.0L 4-cyl RWD · 22 city / 31 hwy

Sources: NHTSA records for the 2023 Mercedes-Benz C300 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 22 consumer complaints for the 2023 Mercedes-Benz C300. The part named most often is forward collision avoidance, with 10 complaints (45% of the total), followed by brakes (5) and electrical system (5). 7 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 3,900 miles. Of all complaints, 2 involved a crash, 1 an injury, according to the filers. NHTSA lists 9 recall campaigns and 359 technical service bulletins for this model year. Forward collision avoidance complaints overlap with 6 technical service bulletins filed under the same part. Brakes complaints overlap with 6 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: “- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. …”

NHTSA complaint #11524034, filed 2023-05

Brakes: “First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. …”

NHTSA complaint #11523001, filed 2023-05

Electrical system: “The electrical wiring harness of my vehicle completely caught fire making my vehicle stopped working. Manufacture warranty refuses to acknowledge this as an ongoning issue with this models and forcing me to pay for my own repairs this is a danger to anyone driving this vehicle as the car entirely can be caught on fire at any given time.”

NHTSA complaint #11596594, filed 2024-06

Other or unknown: “While driving on the highway I had decided to tilt my sunroof open. When it opened the sunroof completely cracked/shattered discarding tiny particles of glass all over me. There were no previous compromising cracks nor did anything hit my pano sunroof causing this to happen”

NHTSA complaint #11606333, filed 2024-08

Mileage when problems were reported

100% of the 7 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 2,000 and 6,000 miles.

71%0–1014%10–2514%25–500%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (7 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 3,900 miles.

Complaints by year filed

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

20231020242025
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 C300 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
C300 Convertible RWD2.0L 4-cyl9-speed automatic212924$3,400
C300 Coupe RWD2.0L 4-cyl9-speed automatic223125$3,300
C300 RWD2.0L 4-cyl · hybrid9-speed automatic253629$2,850

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

See all 9 recalls for the 2023 Mercedes-Benz C300 → · 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. 359 on record; the latest 10 are shown.

See all 359 bulletins →

Other model years of the Mercedes-Benz C300

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
202411—3—30—Too new
2023223,9009—25—Too new
2022256,0009—2533 · FewerRising
20211486,0787527—Not enough data
20203328,7229—2542 · TypicalStable
20196922,62617—2547 · TypicalRising
20189950,0001852538 · TypicalRising
201721628,0001552677 · MoreRising
201629140,3001352872 · MoreRising
201538148,5001142886 · MoreStable
20149427,000552213 · FewerStable
201326280,000652239 · TypicalFalling
201226783,5006—2028 · FewerFalling
201148079,000642153 · TypicalFalling
201045365,3006—2166 · MoreFalling
200957670,0008—2184 · MoreFalling
200867278,8907—2169 · MoreStable

All Mercedes-Benz C300 model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 2023 Mercedes-Benz C300 have?

NHTSA recorded 22 consumer complaints for the 2023 Mercedes-Benz C300 as of Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2023 Mercedes-Benz C300 is reported most often?

Forward collision avoidance is named most often, in 10 complaints (45% of the total), followed by brakes with 5.

Has the 2023 Mercedes-Benz C300 been recalled?

NHTSA lists 9 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 C300 get?

The EPA rates the 2023 Mercedes-Benz C300 (C300 Coupe, 2.0L 4-cyl) at 25 mpg combined, 22 city and 31 highway, with an estimated annual fuel cost of $3,300 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2023 Mercedes-Benz C300 reported?

Among the 7 complaints that include a mileage, the median is 3,900 miles and the middle half falls between 2,000 and 6,000 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.