AutoUtility currently tracks 253 official NHTSA owner defect complaints for the 2017 Mercedes-Benz C-Class. Engine & Cooling issues are the most frequently reported category, appearing in 74 complaints (29.2% of submitted records). Among these NHTSA complaint records, 12 filings cite a crash, 3 cite a fire, 13 report one or more injuries. The 2017 Mercedes-Benz C-Class belongs to the 4th Generation (W205) platform.
Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records
74 owner complaints submitted to NHTSA ODI for this subsystem.
41 owner complaints submitted to NHTSA ODI for this subsystem.
35 owner complaints submitted to NHTSA ODI for this subsystem.
35 owner complaints submitted to NHTSA ODI for this subsystem.
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"The convertible roof gets stuck partially in open or closed position. It has to be forced closed. The vehicle is always garaged and the convertible was used very carefully but still has been troublesome from the beginning"
"2017 Mercedes c300 the switchover valve in the diagnostic module of the evaporative emission control system is jammed open. This issue was called for recall for models 2018 or later, but 2017 was not part of it."
"The contact owns a 2017 Mercedes-Benz C300. While driving at approximately 15 mph, the contact observed smoke emanating from under the hood. The vehicle was driven to her work location and parked. Upon exiting the vehicle and opening the hood, she observed orange flames coming from the engine..."
"strong evident fuel/ gas smell when driving and when the car is in park after driving."
"Check engine light for P052E which has been coming and going off for years now. Now the check engine light is there permanently. I spoke to Mercedes Benz customer service and requested for them to fix the problem now that the light is on permanently but they refuse to fix it because the car has..."
Reported defect complaint volume across sibling model years (2015–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Mercedes-Benz C-Class | 441 | 11 | 14 | View 2015 Problems → |
| 2016 Mercedes-Benz C-Class | 315 | 7 | 14 | View 2016 Problems → |
| 2017 Mercedes-Benz C-Class Current Page | 253 | 12 | 17 | Current |
| 2018 Mercedes-Benz C-Class | 0 | 0 | 19 | View 2018 Problems → |
| 2019 Mercedes-Benz C-Class | 75 | 3 | 16 | View 2019 Problems → |
| 2020 Mercedes-Benz C-Class | 46 | 5 | 12 | View 2020 Problems → |
| 2021 Mercedes-Benz C-Class | 16 | 0 | 7 | View 2021 Problems → |
| 2022 Mercedes-Benz C-Class | 26 | 1 | 9 | View 2022 Problems → |
| 2023 Mercedes-Benz C-Class | 25 | 2 | 10 | View 2023 Problems → |
| 2024 Mercedes-Benz C-Class | 15 | 2 | 3 | View 2024 Problems → |
| 2025 Mercedes-Benz C-Class | 4 | 0 | 2 | View 2025 Problems → |
| 2026 Mercedes-Benz C-Class | 0 | 0 | 1 | View 2026 Problems → |
Complete distribution of consumer defect reports across all 61 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| Engine NHTSA category: ENGINE | 51 | 0 | 0 | 0 | 0 |
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 25 | 0 | 1 | 4 | 0 |
| Seat Belts NHTSA category: SEAT BELTS | 20 | 0 | 0 | 0 | 0 |
| Fuel & Propulsion System NHTSA category: FUEL/PROPULSION SYSTEM | 19 | 0 | 0 | 0 | 0 |
| Structure & Body NHTSA category: STRUCTURE | 17 | 0 | 0 | 0 | 0 |
| Air Bags NHTSA category: AIR BAGS | 9 | 4 | 0 | 4 | 0 |
| ELECTRICAL SYSTEM,ENGINE | 9 | 0 | 0 | 0 | 0 |
| Steering NHTSA category: STEERING | 8 | 1 | 0 | 2 | 0 |
| ENGINE,FUEL/PROPULSION SYSTEM | 7 | 0 | 0 | 0 | 0 |
| Visibility / Glass NHTSA category: VISIBILITY | 7 | 0 | 0 | 2 | 0 |
| Powertrain NHTSA category: POWER TRAIN | 5 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ENGINE | 5 | 0 | 0 | 0 | 0 |
| Wheels & Hubs NHTSA category: WHEELS | 5 | 0 | 0 | 0 | 0 |
| Electrical System NHTSA category: ELECTRICAL SYSTEM | 4 | 0 | 1 | 0 | 0 |
| Service Brakes NHTSA category: SERVICE BRAKES | 4 | 0 | 0 | 1 | 0 |
| Tires NHTSA category: TIRES | 4 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,AIR BAGS | 2 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,COMMUNICATION | 2 | 0 | 0 | 0 | 0 |
| Fuel System NHTSA category: FUEL SYSTEM, GASOLINE | 2 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM | 2 | 0 | 0 | 0 | 0 |
| Seats & Restraints NHTSA category: SEATS | 2 | 0 | 0 | 0 | 0 |
| STEERING,SUSPENSION | 2 | 0 | 0 | 0 | 0 |
| STRUCTURE,UNKNOWN OR OTHER | 2 | 0 | 0 | 0 | 0 |
| UNKNOWN OR OTHER,ENGINE | 2 | 0 | 0 | 0 | 0 |
| Visibility & Wipers NHTSA category: VISIBILITY/WIPER | 2 | 0 | 0 | 0 | 0 |
| AIR BAGS,SEAT BELTS | 1 | 1 | 0 | 1 | 0 |
| AIR BAGS,SEAT BELTS,STRUCTURE | 1 | 1 | 0 | 2 | 0 |
| AIR BAGS,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| AIR BAGS,VEHICLE SPEED CONTROL,SERVICE BRAKES | 1 | 1 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,AIR BAGS,SEAT BELTS | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,AIR BAGS,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,ENGINE,VISIBILITY/WIPER | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,EXTERIOR LIGHTING | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,STRUCTURE | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,STRUCTURE,ENGINE | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,UNKNOWN OR OTHER | 1 | 1 | 0 | 0 | 0 |
| Engine & Cooling NHTSA category: ENGINE AND ENGINE COOLING | 1 | 0 | 0 | 0 | 0 |
| ENGINE AND ENGINE COOLING,ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| ENGINE,FUEL/PROPULSION SYSTEM,LANE DEPARTURE | 1 | 0 | 0 | 0 | 0 |
| Forward Collision Avoidance NHTSA category: FORWARD COLLISION AVOIDANCE | 1 | 0 | 0 | 0 | 0 |
| FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM,ENGINE | 1 | 0 | 1 | 0 | 0 |
| POWER TRAIN,ELECTRICAL SYSTEM,ENGINE | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ELECTRONIC STABILITY CONTROL (ESC),ENGINE | 1 | 0 | 0 | 0 | 0 |
| SEAT BELTS,ENGINE | 1 | 0 | 0 | 0 | 0 |
| SEAT BELTS,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| SEAT BELTS,STRUCTURE | 1 | 0 | 0 | 0 | 0 |
| STEERING,ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| STEERING,ELECTRICAL SYSTEM,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| STEERING,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL | 1 | 1 | 0 | 0 | 0 |
| STEERING,POWER TRAIN,ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| STEERING,UNKNOWN OR OTHER | 1 | 1 | 0 | 1 | 0 |
| STRUCTURE,FORWARD COLLISION AVOIDANCE | 1 | 0 | 0 | 0 | 0 |
| STRUCTURE,VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC) | 1 | 1 | 0 | 0 | 0 |
| SUSPENSION,AIR BAGS,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| SUSPENSION,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| SUSPENSION,ELECTRICAL SYSTEM,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| VEHICLE SPEED CONTROL,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| VISIBILITY,STRUCTURE | 1 | 0 | 0 | 0 | 0 |
| WHEELS,UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
Cross-reference safety recalls, crash test safety ratings, and EPA fuel economy for this model year
Key performance indicators, EPA fuel economy specs, powertrain variants, and summary ratings.
Official recall campaigns, safety defect descriptions, and manufacturer free remedy instructions.
NHTSA 5-Star NCAP crash test results, driver assistance systems, and rollover resistance ratings.
EPA fuel economy ratings, electric range, and annual energy cost benchmarks.
Direct, deterministic answers synthesized from verified United States government databases for the 2017 Mercedes-Benz C-Class
In official NHTSA consumer records, the most frequently cited issue area for the 2017 Mercedes-Benz C-Class is Engine & Cooling, appearing in 74 records (29.2% of submitted filings).
Secondary reported categories include Air Bags & Restraints (41) and Fuel & Propulsion System (35).
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 253 consumer defect complaints and 17 safety recall campaigns for the 2017 Mercedes-Benz C-Class.
Reviewing documented component complaint distributions, recall remedy notices, and active federal investigations provides an objective, evidence-based view of the vehicle's historical safety and defect record.
Among consumer complaint records on file with NHTSA for the 2017 Mercedes-Benz C-Class, 12 filings cite a crash, 3 cite smoke or fire, and 13 report one or more injuries.
Incident entries represent consumer descriptions at the time of submission to federal authorities and do not establish mechanical causation or legal liability.
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database under 49 CFR Part 576.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.