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2021 Mercedes-Benz C-Class

Problems, recalls and owner-reported issues

Engine is the leading concern among 15 owner complaints filed for this model year. This is the 23rd highest complaint count among 23 C-Class model years with reports.

Complaints by model year
  20. 15
Primary concernEngine8 reports · 53% of complaints
Owner complaints15Filed with NHTSA
Recall relationshipNo recalls on fileNHTSA campaign records

What owners report most often

  1. Engine8
  2. Air bags2
  3. Fuel/propulsion system2
  4. Power train2
  5. Back over prevention1
  6. Electrical system1
  7. Fuel system1
  8. Gasoline1

Recalls and investigations

No safety recalls on file.

Representative owner complaints: air bags

2 reports, newest first. Show all

  1. Suspension, Power train, Air bags, Dec 9, 2025

    Driving and something came from underneath the vehicle and cause me to swerve in all the airbags deployed

  2. Air bags, Feb 23, 2022

    The contact owns a 2021 Mercedes-Benz C300. The contact stated while driving at an unknown speed, there was a burning odor inside the vehicle. The contact stated the passenger side air bags was enabled warning light was illuminated. The contact also stated the vehicle made an abnormal noise. The contact took the vehicle to the local dealer but was unable to duplicate the failure. The manufacturer had not been informed of the failure. The failure mileage was unknown.