2024 Mercedes-Benz C300 Problems
Compared with other Mercedes-Benz C300 years
Too new to compare
- Model years are compared once their first three years of complaints are in; the 2024 can be compared from 2027.
- Most reported part: Electrical system (4 complaints).
- 3 recall campaigns on record. A VIN search at nhtsa.gov/recalls shows open recalls for a specific vehicle.
Nearby years with fewer complaints than typical and no open NHTSA investigation: 2022
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
- 11filed with NHTSA
- Median mileage
- —no mileage reported
- 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
- 30 mpgcombined, 2.0L 4-cyl · hybrid RWD · 26 city / 36 hwy
Sources: NHTSA records for the 2024 Mercedes-Benz C300 (complaints, recalls, investigations), EPA fuel economy. Report an error
NHTSA recorded 11 consumer complaints for the 2024 Mercedes-Benz C300. The part named most often is electrical system, with 4 complaints (36% of the total), followed by brakes (3) and other or unknown (3). Of all complaints, 2 involved a crash, according to the filers. NHTSA lists 3 recall campaigns and 314 technical service bulletins for this model year. Electrical system complaints overlap with 1 recall campaign covering the fuses and circuit breakers and 177 technical service bulletins filed under the same part. Brakes complaints overlap with 5 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.
- Electrical system4 36%
- Brakes3 27%
- Other or unknown3 27%
- Air bags2 18%
- Engine2 18%
- Seats1 9.1%
- Vehicle speed control1 9.1%
Example complaints
Electrical system: “I was driving and all of a sudden a loud sound started occurring and the sound appeared to come from my breaks as if they were about to give out. The car is currently at Mercedes getting looked at. I’m concerned for my safety as I have taken this car in for two other issues in the last couple of months.”
NHTSA complaint #11594999, filed 2024-06Brakes: “The vehicle appears to have experienced a braking system malfunction, possibly involving the brake-by-wire system, electronic stability control (ESC), or unintended acceleration event. When the brake pedal was fully depressed, the car suddenly and uncontrollably accelerated forward into a cinder block wall. After the incident, it was observed that only the left-side tires left skid marks, indicating an apparent brake imbalance or failure on the right side. The vehicle is available for inspection upon request. My safety and the safety of others were severely compromised. …”
NHTSA complaint #11677330, filed 2025-07Other or unknown: “The vehicle was in drive, as I was turning right, the vehicle shifted from p(park) to n(netural) on the roadway. The car would not allow me to shift back to drive. I had to literally turn the car off and then back on in the middle of the road in order to put it back in drive Thankfully, there was not a vehicle nearby at the time, which could have caused a major accident or lost of life. At the time there was not a warning message at the time. Three days later tire pressure warning with fluctuating numbers occurred. I have only had this vehicle, purchased new for under five months. …”
NHTSA complaint #11588272, filed 2024-05Air bags: “Issue: Post-Airbag Deployment PCM Lockout Description: I am reporting a critical safety concern regarding the 2024 Mercedes-Benz C300. After an airbag deployment, the vehicle's Powertrain Control Module (PCM) is designed to automatically lock, preventing the engine from being restarted. While this feature is intended to enhance safety, it poses significant risks in certain emergency situations. …”
NHTSA complaint #11610577, filed 2024-08Complaints by year filed
This model year is less than 4 years old, so a trend is not meaningful yet.
Fuel economy and running cost
EPA ratings for each 2024 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).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| C300 RWD | 2.0L 4-cyl · hybrid | 9-speed automatic | 26 | 36 | 30 | $2,750 |
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
- 25V253000May 2, 2025Seat belts › FrontCovers: Mercedes-Benz C300 2022–2025, AMG C43 2023–2024
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2025 C 300, and 2023-2024 AMG C 43 vehicles. The driver-side seat belt cover may not be properly installed on the seat belt tensioner, which can cause the seat belt anchor to come loose.
- 24V115000Feb 16, 2024Electrical system › Wiring › Fuses and circuit breakersCovers: Mercedes-Benz C300 2023–2024, EQS 450 2023–2024, Mercedes-Maybach S 580 4MATIC 2023–2024 +20 more
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C300, AMG C43, S580e, S580, Maybach S580, Maybach S680, AMG SL43, AMGSL63, GLC300, EQE350, EQE500, EQS450, EQS580, AMG EQS, 2023 S500, AMG SL55, AMG EQE, 2024 E350, E450, AMG C63e S, CLE300 Coupe…
- 23V880000Dec 21, 2023Fuel system, gasoline › Delivery › Fuel pumpCovers: Mercedes-Benz C300 2022–2024, AMG E53 2021–2023, GLE 350 2021–2023 +28 more
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2024 GLE, GLS, C-Class, E-Class, S-Class, SL, GLC, CLS, AMG GT, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, causing a loss of…
Recall details for the 2024 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. 314 on record; the latest 10 are shown.
- 11038188Sep 26, 2026Steering. Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see…
- 11038187Sep 26, 2026Transmission and drivetrain. Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G‑TRONIC automatic transmission facelift) For…
- 11038222Sep 25, 2026Electrical system. A software update will be performed that provides enhancements to the robustness and system stability of the communication module. The update is free of charge and runs in the background, which…
- 11037484Sep 25, 2026Visibility (wipers, defrost, mirrors). Complaint CEL illuminates and/or AC does not blow cold. Cause Potentially relevance to hardware and/or software Remedy Scenario 1: 1. If the AC does not blow cold air, replace compressor (if…
- 11038186Sep 22, 2026Brakes. Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is…
- 11037379Sep 18, 2026Transmission and drivetrain, Suspension, Visibility…. Dear Dealer Partners, The part numbers listed in the chart below should no longer be installed and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is…
- 11038175Sep 17, 2026Electrical system. Complaint Issue after OTA Update IC Odometer Reading blank("_ _ _ _") IC Maintanence data unavailable Cause OTA Update E61.0 Remedy In the IC Control Unit Log, please check the following…
- 11038174Sep 15, 2026Electrical system. Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change…
- 11038217Sep 14, 2026Body and structure. Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even…
- 11037987Sep 14, 2026Transmission and drivetrain. Complaint Only vehicles with a variable transfer case are affected. This can be identified through control unit N45 or N15/7 in the quick test. When accelerating with light load, vibrations or…
Other model years of the Mercedes-Benz C300
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2024 | 11 | — | 3 | — | 30 | — | Too new |
| 2023 | 22 | 3,900 | 9 | — | 25 | — | Too new |
| 2022 | 25 | 6,000 | 9 | — | 25 | 33 · Fewer | Rising |
| 2021 | 14 | 86,078 | 7 | 5 | 27 | — | Not enough data |
| 2020 | 33 | 28,722 | 9 | — | 25 | 42 · Typical | Stable |
| 2019 | 69 | 22,626 | 17 | — | 25 | 47 · Typical | Rising |
| 2018 | 99 | 50,000 | 18 | 5 | 25 | 38 · Typical | Rising |
| 2017 | 216 | 28,000 | 15 | 5 | 26 | 77 · More | Rising |
| 2016 | 291 | 40,300 | 13 | 5 | 28 | 72 · More | Rising |
| 2015 | 381 | 48,500 | 11 | 4 | 28 | 86 · More | Stable |
| 2014 | 94 | 27,000 | 5 | 5 | 22 | 13 · Fewer | Stable |
| 2013 | 262 | 80,000 | 6 | 5 | 22 | 39 · Typical | Falling |
| 2012 | 267 | 83,500 | 6 | — | 20 | 28 · Fewer | Falling |
| 2011 | 480 | 79,000 | 6 | 4 | 21 | 53 · Typical | Falling |
| 2010 | 453 | 65,300 | 6 | — | 21 | 66 · More | Falling |
| 2009 | 576 | 70,000 | 8 | — | 21 | 84 · More | Falling |
| 2008 | 672 | 78,890 | 7 | — | 21 | 69 · More | Stable |
All Mercedes-Benz C300 model years · Best and worst years by complaints
Frequently asked questions
How many NHTSA complaints does the 2024 Mercedes-Benz C300 have?
NHTSA recorded 11 consumer complaints for the 2024 Mercedes-Benz C300 as of Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2024 Mercedes-Benz C300 is reported most often?
Electrical system is named most often, in 4 complaints (36% of the total), followed by brakes with 3.
Has the 2024 Mercedes-Benz C300 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 C300 get?
The EPA rates the 2024 Mercedes-Benz C300 (C300, 2.0L 4-cyl · hybrid) at 30 mpg combined, 26 city and 36 highway, with an estimated annual fuel cost of $2,750 at 15,000 miles a year. Other engine and drive versions are rated differently.
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.