2018 Mercedes-Benz C 300: Reliability Data

Source: NHTSA — 127 complaints
127
Total Complaints
50,000mi
Median Mileage
ENGINE
Top Issue
9
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

10,000 25th Percentile
50,000 Median Mileage
62,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE
34
UNKNOWN OR OTHER
19
STEERING
11
ELECTRICAL SYSTEM
10
FUEL/PROPULSION SYSTEM
9
STRUCTURE:BODY
7
STRUCTURE
5
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
4
AIR BAGS
4
COMMUNICATION
3

Severity Assessment

9
Crashes
0
Fires
2
Injuries
0
Deaths

Sample Complaint Reports

"I BROUGHT MY VEHICLE TO MERCEDES BENZ FOR A REAR TAIL LIGHT RECALL. WHEN I PICKED UP MY VEHICLE THE BRAKE PEDAL WENT TO THE FLOOR. NOTE: THIS WAS NOT HAPPENING PRIOR TO ME DROPPING THE CAR OFF TO THE DEALER. THE SERVICE MANAGER DROVE MY CAR BACK TO THE MECHANIC. I WAS THEN TOLD THAT, IRONICALLY..."
"I BROUGHT MY VEHICLE TO MERCEDES BENZ FOR A REAR TAIL LIGHT RECALL. WHEN I PICKED UP MY VEHICLE THE BRAKE PEDAL WENT TO THE FLOOR. NOTE: THIS WAS NOT HAPPENING PRIOR TO ME DROPPING THE CAR OFF TO THE DEALER. THE SERVICE MANAGER DROVE MY CAR BACK TO THE MECHANIC. I WAS THEN TOLD THAT, IRONICALLY..."
"TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ C300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 18V456000 (STRUCTURE); HOWEVER, THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR AS THE RECALL N..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28