AI Damage2024 Mercedes-Benz C 300 4matic: common problems
Owners of the 2024 Mercedes-Benz C 300 4matic filed 3 complaints with NHTSA, most often about electrical system and suspension. The maker issued 112 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 3
- Technical service bulletins (TSB)
- 112
What fails most often
- 1 Electrical system 33% of all complaints
- 2 Suspension 33% of all complaints
- 3 Exterior lighting 33% of all complaints
- 4 Engine 33% of all complaints
- 5 Service brakes 33% of all complaints
- 6 Lane departure 33% of all complaints
- Electrical system: 1 complaints (33% of all); manufacturer bulletins for this component: 58.
- Suspension: 1 complaints (33% of all); manufacturer bulletins for this component: 8.
- Exterior lighting: 1 complaints (33% of all); manufacturer bulletins for this component: 5.
- Engine: 1 complaints (33% of all); manufacturer bulletins for this component: 3.
- Service brakes: 1 complaints (33% of all); manufacturer bulletins for this component: 2.
Symptoms owners describe
How many of the 3 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 1 | 0 | 58 |
| Suspension | 1 | 0 | 8 |
| Exterior lighting | 1 | 0 | 5 |
| Engine | 1 | 0 | 3 |
| Service brakes | 1 | 0 | 2 |
| Lane departure | 1 | 0 | 1 |
| Powertrain | 0 | 0 | 16 |
| Structure | 0 | 0 | 10 |
| Steering | 0 | 0 | 8 |
| Visibility | 0 | 0 | 8 |
| Seats | 0 | 0 | 4 |
| Air bags | 0 | 0 | 2 |
| Backover prevention | 0 | 0 | 2 |
| Fuel/propulsion system | 0 | 0 | 2 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Blackout screen while driving. Mileage incorrectly reading. Speed limit incorrectly reading while driving the Dashboard pick up the undercarriage camera. The electricity on the car keep popping up. I have been complaining over 1yr since I lease the vehicle they only offer to trade with me paying the expenses.
Defect 1 â Recurring Strut Assembly: Following an AC sensor replacement on February 11, 2026, a loud rattling noise emerged from the dashboard/strut area. The vehicle was retained 22 days without resolution. The strut plate was repaired, but the noise recurred.
Approaching the bridge my car started to jerk and pop up with all of these notification about âblind spot assistanceâ is down, âcar engine failure, please check user manualâ, âcar malfunctionâ with a engine battery symbol. All the while the engine light was on.
Comparison
By complaint count this model year ranks 17,150 of 36,656 model years in the NHTSA data (top 47% most complained about).
On average one model year of the C 300 4matic has 2 complaints (8 years in the data). This year has 3, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- A software update will be performed that provides enhancements to the robustness and system stability of…
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 takes about 8 minutes to…
- 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 with the door trim removed, then continue the diagnosis working towards the speaker and…
- 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 attached video. If necessary, apply lubricant to the sleeves.
- Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic…
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 faster, more effective and…
- 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 distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration…
- Complaint Issue after OTA Update IC Odometer Reading blank("_ _ _ _") IC Maintanence data unavailable…
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 information: Verify whether…
- 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 request is triggered, a temporary glitch is causing the Head Unit application to fail to overwrite…
- 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 jolting sensation may come from the drivetrain. It may be mistaken for a harsh shift. Cause…
- Complaint Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area…
Complaint Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area during cornering. (figure 1) On the above‑mentioned vehicles with a mileage up to 15,000 km (about 9,300 mi)…
- Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious…
Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("‑ ‑"). • Flashing when…
- Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G‑TRONIC automatic…
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 faster, more effective…
- Complaint The Apple Music app is no longer available in the head unit apps menu after updating the…
Complaint The Apple Music app is no longer available in the head unit apps menu after updating the software of the (A26/17 ‑ MBUX multimedia system + instrument cluster (head unit)) to E333.8 / A236 904 19 00. Cause…
NHTSA lists 112 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2024 Mercedes-Benz C 300 4matic?
Owner complaints to NHTSA most often mention: electrical system, suspension, exterior lighting. Total complaints: 3. The most frequent symptoms in complaint texts: driver assists: adaptive cruise, lane keeping (67%), brake failure (33%), A/C or heater (33%).
How many service bulletins (TSB) were issued for the 2024 Mercedes-Benz C 300 4matic?
NHTSA lists 112 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2024 Mercedes-Benz C 300 4matic from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2024 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.