2018 Mercedes-Benz C300 problems
NHTSA has received 130 complaints about the 2018 Mercedes-Benz C300, and 27% of them involve engine. Next are body & structure (11%) and steering (9%).
At a glance
- Complaints
- 130 filed with NHTSA
- Most reported
- Engine 27% of complaints
- Crashes and fires
- 9 and 0
- Injuries and deaths
- 2 and 0
- Typical mileage
- 51,000 miles 30 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
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 11 |
| 20k to 40k miles | 1 |
| 40k to 60k miles | 8 |
| 60k to 80k miles | 6 |
| 80k to 100k miles | 3 |
| 100k to 120k miles | 1 |
| 120k to 140k miles | 0 |
| 140k to 160k miles | 0 |
| 160k to 180k miles | 0 |
| 180k to 200k miles | 0 |
| 200k+ miles | 0 |
What the data shows
Of the 30 complaints that include odometer readings, half describe a problem before roughly 51,000 miles.
Safety-related details: 9 complaints mention a crash; 2 injuries reported.
Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2018 ranks 9th most-complained-about out of 15 model years of the Mercedes-Benz C300 with enough data (97 complaints in that window). It is also covered by 18 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.
While driving in a curved onramp connecting from one street to another the vehicle experienced a complete loss of steering ability which resulted in the vehicle continuing to move straight, off the pavement, and into a wall. The vehicle bounced off of the wall and loss of steering ability continued and the vehicle could not be controlled, crossed the road, went over a guardrail, and down an embankment until it came to a stop (approx 100ft).
I was driving on highway 1, at about 45 MPH, on my way to work in a light rain. I may have just transitioned into the #1 lane of traffic as I was about 500 feet from the red left turn signal light where I make my normal turn. I just remember my car suddenly hydroplaned across the double yellow line into the oncoming lanes of traffic and hitting the opposite shoulder of the road. My car ended up in a ditch. Luckily it happened at about 0630 in the morning and no one was injured as this is a busy roadway.
Tl* the contact owns a 2018 mercedes-benz c300w. However, the air bag warning indicator illuminated after the repair. The dealer was made aware of the failure. The vehicle was not repaired a second time. The manufacturer was made aware of the failure. The failure mileage was 10,000.
Date: april 13, 2021. Model: c300 year : 2018 milage: 16,000. Time: 2.30 p.m. Whether: sunny. Road condition: smooth problem: while driving on 405 south at speed of approx 65 to 70 MPH for no apparent reason , the car uddenly , unexpectedly, and forcefully slammed on the brakes ( 65 to 0 MPH) in matter of seconds, and locked its wheels. Left me stock on the fwy. The most scariest experience as you don't know what is going on or what is going to happen to .