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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: fuel/propulsion system

2 reports, newest first. Show all

  1. Fuel/propulsion system, Nov 25, 2025

    My car had a coolant leak last year a hose broke and I have a 2021. My son’s mercedes sis the same thing on 11/23/2025. I have researched ma y others with this same issue. There should be a recall on that hose or whatever the problem Is.

  2. Fuel/propulsion system, Oct 6, 2025

    While driving car on Sunday 10/5, it suddenly failed to respond to gas pedal pressure. The car stopped accelerating and rather slowed to 15 MPH, almost causing a car from behind to hit me in the rear side.