"How reliable is the 2014 Mercedes-Benz C300?"

"Based on 119 NHTSA complaints, the 2014 Mercedes-Benz C300 has a median complaint mileage of 34683 miles. The most common issue is AIR BAGS."

"What are common problems with the 2014 Mercedes-Benz C300?"

"The most frequently reported component in NHTSA complaints for the 2014 Mercedes-Benz C300 is AIR BAGS, accounting for a significant portion of the 119 total complaints filed."

2014 Mercedes-Benz C300: Reliability Data

Source: NHTSA — 119 complaints

119

Total Complaints

34,683mi

Median Mileage

AIR BAGS

Top Issue

Crash Reports

When Do Complaints Happen?

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

14,000 25th Percentile

34,683 Median Mileage

48,561 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

AIR BAGS

STEERING

SUSPENSION

UNKNOWN OR OTHER

ELECTRICAL SYSTEM

STRUCTURE:BODY

VEHICLE SPEED CONTROL

ENGINE

SERVICE BRAKES

SEATS

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"RE: CONTINENTAL PROCONTACT (FRONT) 225 45 R17 AND (REAR)245 40 17- ON SEPTEMBER 11, 2014 AT 306 MILES TIRE DISPLAYED BULGE NEXT TO "C" OF CONTINENTAL OF FRONT PASSENGER SIDE TIRE. THE CAR WAS SITTING FOR A WEEK NOT BEING DRIVEN WHEN THE BULGE APPEARED. I WAS NOT GOING TO DRIVE ON A MAJOR HIGHWAY ..."

"TL* THE CONTACT OWNS A 2014 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT UNKNOWN SPEED, THE VEHICLE DECELERATED AFTER THE CHECK ENGINE AND TRACTION LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT THE ELECTRONIC MODULE NEEDED TO BE REPAIRED. THE ..."

"R/F TIRE BUBBLE IN SIDEWALL. AT 1959 MILES A BUBBLE APPEARED IN THE R/F TIRE. I DISCOVERED THE BUBBLE WHILE WASHING THE CAR . THIS APPEARED ABOUT TWO MONTH AFTER PURCHASE. AUGUST 19 20014 THE DEALER RELUNCTANTLY REPLACE THE TIRE. I HAVE NOT SEEN ANY BUBBLES SINCE THAT DATE. I AM NOT SATISFIED WI..."

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

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

AIR BAGS 51 complaints

25th: 23,500 mi Median: 27,000 mi 75th: 37,500 mi

STEERING 13 complaints

25th: 45,785 mi Median: 47,582 mi 75th: 65,000 mi

UNKNOWN OR OTHER 8 complaints

Median: 11,000 mi

ELECTRICAL SYSTEM 8 complaints

Median: 47,582 mi

Where Are Complaints Coming From?

Top states by complaint count.

NJ: 15 NY: 14 MA: 11 VA: 8 FL: 7 OH: 6 IL: 5 MD: 5 MI: 5 PA: 5

Who Files Complaints?

1.7%

Original Owners

98.3%

Second+ Owners

Mercedes-Benz C300 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2010	590	67,000	AIR BAGS	26
2011	584	80,000	AIR BAGS	20
2012	331	90,000	AIR BAGS	6
2013	340	80,000	AIR BAGS	15
2015	505	40,000	ENGINE	11
2016	355	38,500	ENGINE	14
2017	281	28,500	ENGINE	17

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