2020 Mercedes-Benz C 300: Reliability Data

Source: NHTSA — 41 complaints
41
Total Complaints
12,000mi
Median Mileage
ENGINE
Top Issue
7
Crash Reports

When Do Complaints Happen?

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

3,000 25th Percentile
12,000 Median Mileage
34,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE
6
UNKNOWN OR OTHER
5
FUEL/PROPULSION SYSTEM
3
ELECTRICAL SYSTEM
2
STEERING
2
POWER TRAIN
2
VISIBILITY:SUN/MOON ROOF ASSEMBLY
2
BACK OVER PREVENTION
2
AIR BAGS
2
FORWARD COLLISION AVOIDANCE: WARNINGS
2

Severity Assessment

7
Crashes
0
Fires
7
Injuries
0
Deaths

Sample Complaint Reports

"TL* THE CONTACT OWNS A 2020 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT A HIGH RATE OF SPEED, THE VEHICLE WOULD ABRUPTLY SLOW DOWN ONCE THE TRAFFIC SIGN READER FEATURE ACTIVATED INDEPENDENTLY WITHOUT WARNING. THE CONTACT STATED THAT ONCE A TRAFFIC SIGN ON THE ROAD WOULD INDICATE A ..."
"TL* THE CONTACT OWNS A 2013 MERCEDES-BENZ C300. THE CONTACT STATED THAT THE DOOR HANDLE WAS FRACTURED INTERNAL AND UNABLE TO BE OPENED FROM INSIDE OF THE VEHICLE. THE CONTACT STATED THAT HER SON WAS LOCKED INSIDE THE VEHICLE AND UNABLE TO EXIT. THE CONTACT INFORMED HER SON TO USE THE KEY FOB TO EXIT..."
"MY 2016 C300 (IN-LINE 4 TURBO, "PETROL" WITH 241HP) AT 55K MILES HAD 1ST CYLINDER CRACKED WHILE DRIVING ON HIGHWAY, AND MY CAR IS OUT OF WARRANTY. I TALKED TO MY DEALERSHIP AND THE CORPORATE SEPARATELY. THE DEALERSHIP WOULD COVER THE COST OF THE PARTS WHETHER THE ENGINE NEEDS REPLACEMENT OR NOT, ..."

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