The contact owns a 2026 Mercedes-Benz C300. The contact stated that there was white powder discovered inside the vehicle. The contact initially thought that it was mold. The contact stated that the heating system had caused the issue. The air bag dust was on the headliner and the driver's side A-pillar. The vehicle was taken to the local dealer, who was unable to determine the cause of the issue. The vehicle was then taken to another dealer, Mercedes-Benz Atlanta South Parts Department (3800 Royal S Pkwy, Atlanta, GA 30349), who was unable to determine the source of the white powder, and indicated that it was dust from outside. The contact located an article related to the air bag leaking. The vehicle with driven with the windows closed and the air conditioner on. The driver had previously vacuumed the dust. The Mercedes-Benz manufacturer was contacted on the main number. The approximate failure mileage was 1,729.
The worst 2026 Mercedes-Benz C300 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Acceleration1
- Airbags1
- Body1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Acceleration1
- Airbags1
- Body1
Recalls 1
Electrical system: instrument cluster/panel
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class, E-Class, SL, CLE, and GLC vehicles. The infotainment control unit may reset while the vehicle is in motion and cause the instrument panel display to go blank.
- Risk
- An instrument panel display that fails to show critical safety information, such as the speedometer and warning lights, increases the risk of a crash.
- Remedy
- Dealers will update the infotainment control unit software, free of charge. Owner notification letters were mailed June 29, 2026. MBUSA's number for this recall is 2026050004. Owners may contact MBUSA customer service at 1‑800‑367‑6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on beginning May 8, 2026.
Recall number 26V281000 · Recall details
Technical service bulletins for the 2026 Mercedes-Benz C300 91
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Issue Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, is launching an OTA update to the...
- Diverse functional limitations in the vehicle in combination with various warning and fault messages in...
- Wheezing noises/squeaking noises from the front shock absorbers when passing over surface undulations and...
- Issue A software update will be performed that provides enhancements to the robustness and system...
- Slight creaking noises when steering
- CEL illuminates and/or AC does not blow cold
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Dear Dealer Partners, The part numbers listed in the chart below should no longer be installed and any...
- Issue after OTA Update IC Odometer Reading blank("_ _ _ _") IC Maintanence data unavailable
- Radio station cover art does not refresh when switching stations
What 2026 Mercedes-Benz C300 owners say
Most recent owner complaints, unedited.
When driving 75mph in order to change my favorite radio station, I must go to the center tablet, scroll until I find the station desired and then must tap it in the center or it does not change. On my 2025 MB C model you could change the channels on the steering column. I asked MB to research this issue and I was told a third party wrote the 2026 software and did not include this option! Is it not a safety concern that when doing 75 mph you must take your eyes off the road to find and change a radio channel? No One cares at MB and I was told that I need to live with it !! Really that is the solution??
Compare the 2026 Mercedes-Benz C300
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Other model years
20102011201220132014201520162017201820192020202120222023202420252026
Questions about the 2026 Mercedes-Benz C300
Is the 2026 Mercedes-Benz C300 reliable?
Owners have filed 2 complaints about the 2026 Mercedes-Benz C300, fewer than a typical C300 model year.
What is the most common problem with the 2026 Mercedes-Benz C300?
Acceleration and speed control, with 1 complaint. Next is airbags (1).
How many recalls does the 2026 Mercedes-Benz C300 have?
1 recall, covering electrical system.
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