Total Complaints
2 filings
MERCEDES-BENZ SLC 300 · model year
2019 MERCEDES-BENZ SLC 300
2 NHTSA complaints, and 2 active recalls for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2019MERCEDES-BENZSLC 300 carries 2 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2019 SLC 300 is engine with 1 filings, followed by fuel/propulsion system (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability. This model year has 2 active recall campaigns, which means the manufacturer is obligated to remedy the covered defect at no charge for the life of the vehicle — the full NHTSA campaign numbers are listed below.
NHTSA currently has 15 investigation files overlapping the 2019 SLC 300. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
2
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| ENGINE | 1 |
| FUEL/PROPULSION SYSTEM | 1 |
Recalls (2)
22V36500020/05/2022
ELECTRICAL SYSTEM:SOFTWARE
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model de
21V05800005/02/2021
ELECTRICAL SYSTEM:SOFTWARE
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle mod
Recent Complaints
20250401ENGINE
The check engine light is on in my 2019 SLC (only 42K miles) and the car is emitting a lot of smoke from the exhaust pipe and it is hesitating while driving it. I almost got rear ended. I took it to the dealership and the fault code comes back as: P052E71 - The valve crankcase ventilation has a malfunction. The actuator is blocked. I searched online and this appears to be a very common and expensive issue on all Mercedes models. It goes out often in them and the dealer says it is NOT covered under the MB warranty. As it is an emissions issue, I understand that my car will not pass smog check without it and I reside in California where it has to pass smog inspection to register it. Even after I get it repaired, the propensity for it to have to be replaced again in the future is high. Please issue a safety recall issue for this problem.
20250401FUEL/PROPULSION SYSTEM
The check engine light is on in my 2019 SLC (only 42K miles) and the car is emitting a lot of smoke from the exhaust pipe and it is hesitating while driving it. I almost got rear ended. I took it to the dealership and the fault code comes back as: P052E71 - The valve crankcase ventilation has a malfunction. The actuator is blocked. I searched online and this appears to be a very common and expensive issue on all Mercedes models. It goes out often in them and the dealer says it is NOT covered under the MB warranty. As it is an emissions issue, I understand that my car will not pass smog check without it and I reside in California where it has to pass smog inspection to register it. Even after I get it repaired, the propensity for it to have to be replaced again in the future is high. Please issue a safety recall issue for this problem.
Compare 2019MERCEDES-BENZSLC 300 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 2019 MERCEDES-BENZ SLC 300 have?▼
The 2019 MERCEDES-BENZ SLC 300 has 2 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
Are there any recalls for the 2019 MERCEDES-BENZ SLC 300?▼
Yes, the 2019 MERCEDES-BENZ SLC 300 has 2 recall(s). The most common affected component is ELECTRICAL SYSTEM:SOFTWARE. Recalls are issued by NHTSA and manufacturers must provide a free remedy.
What are the most common problems with the 2019 MERCEDES-BENZ SLC 300?▼
The most-complained component for the 2019 MERCEDES-BENZ SLC 300 is ENGINE with 1 complaints. Other frequently reported areas include FUEL/PROPULSION SYSTEM.
Is the 2019 MERCEDES-BENZ SLC 300 safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.