Vehicle Data Hub

2015 Mercedes-Benz C300 problems

NHTSA has received 516 complaints about the 2015 Mercedes-Benz C300, and 25% of them involve engine. Next are fuel system (14%) and body & structure (12%).

At a glance

Complaints
516 filed with NHTSA
Most reported
Engine 25% of complaints
Crashes and fires
14 and 1
Injuries and deaths
9 and 0
Typical mileage
44,000 miles 213 complaints with mileage

Source: NHTSA owner complaints

Where the complaints are

Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.

When problems show up

Complaints by mileage, 2015 Mercedes-Benz C300 Complaints by odometer reading in 20,000-mile steps. The median is about 44,000 miles. 0k to 20k miles: 58 complaints 20k to 40k miles: 42 complaints 40k to 60k miles: 45 complaints 60k to 80k miles: 30 complaints 80k to 100k miles: 16 complaints 100k to 120k miles: 13 complaints 120k to 140k miles: 6 complaints 140k to 160k miles: 1 complaints 160k to 180k miles: 2 complaints 180k to 200k miles: 0 complaints 200k+ miles: 0 complaints 040k80k120k160k200k miles Typical: 44,000 miles
Based on 213 complaints that include mileage. 68% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles58
20k to 40k miles42
40k to 60k miles45
60k to 80k miles30
80k to 100k miles16
100k to 120k miles13
120k to 140k miles6
140k to 160k miles1
160k to 180k miles2
180k to 200k miles0
200k+ miles0

What the data shows

Of the 213 complaints that include odometer readings, half describe a problem before roughly 44,000 miles. For engine specifically, the median reported mileage is about 53,000 miles (36 complaints with mileage).

Safety-related details: 14 complaints mention a crash; 1 complaint mentions a fire; 9 injuries reported. Its complaints are less severe on average than those of 88% of model years in our database.

Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2015 ranks 2nd most-complained-about out of 15 model years of the Mercedes-Benz C300 with enough data (209 complaints in that window). It is also covered by 11 safety recall campaigns.

What owners wrote

A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.

Tl* the contact owns a 2015 mercedes-benz c-300. The contact stated that while driving approximately 30 MPH. A police officer had pulled over another vehicle ahead on the right side of the road. The vehicle in front made a complete stop. As a result, in transitioning the far left lane the contact rear ended the vehicle in an attempt to avoid the police officer as he was going down to complete an inspection on the underbelly of the dump truck.

Reported at 99,000 miles, July 2019 CrashInjury

I was driving my car was sputtering or trying to shut off while I press the gas and I let go of the gas and it catches and stayed on. I took it to the dealership and they said they found nothing wrong. May 3rd around 12pm im driving on the freeway and as im getting on the express lane going 60 it dies and I couldn't move the steering wheel and I slammed into a guardrail.

May 2026 CrashInjury

Collusion prevention system inoperative. Causes car to slow slow down and or stop while on the road. Poses a severe life threatening driving condition for me and other drivers. Many other mercedes benz owners across the USA, canada, and japan are complaining of the same error message and issues. My mbusa advisor stated her vehicle is doing the same thing. My service advisor at the dealership stated its mice that are eating the wires.

Reported at 18,000 miles, July 2016

The contact owns a 2015 Mercedes C300. The contact stated that the driver's side rear brakes and rotors were rusted. The contact stated that when the brakes were applied, they were slow to respond. The TPMS warning light was illuminated. The vehicle was taken to a braking center, which declined the warranty for the aftermarket parts. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The approximate failure mileage was 176,000.

Reported at 176,000 miles, April 2026

Other model years of the C300

Best and worst years for the Mercedes-Benz C300