The 2017 Mercedes-Benz SLC is associated with 4 official NHTSA owner defect complaints and 2 safety recall campaigns in the federal safety database. The most frequently reported component area is ELECTRICAL SYSTEM,COMMUNICATION, accounting for 1 reports (25% of total complaints). EPA testing covers 2 certified vehicle configurations spanning 2l 4-cyl and 3l 6-cyl configurations. Gasoline and hybrid variants deliver 23 to 27 MPG combined. Detailed NHTSA crash-test ratings are not available in the current AutoUtility dataset for this model year.
Key Data Findings
- • NHTSA Owner Complaints: 4 reports
- • Safety Recall Campaigns: 2 campaigns
- • Top Reported Defect Area: ELECTRICAL SYSTEM,COMMUNICATION (1 / 25%)
- • NHTSA Overall Safety Rating: Not rated by NHTSA
- • EPA Efficiency: 23–27 MPG (2 variants)
Data Note: Compiled directly from official NHTSA Office of Defects Investigation (ODI), NHTSA 5-Star Safety Ratings, and EPA FuelEconomy.gov databases.
| Variant | Engine | Drivetrain | Transmission | City | Highway | Combined | EV Range | Est. Annual Fuel Cost |
| SLC300 | 2L 4-Cyl | Rear-Wheel Drive | Automatic 9-spd | 25 MPG | 32 MPG | 27 MPG | — | $2,800 / yr |
| AMG SLC43 | 3L 6-Cyl | Rear-Wheel Drive | Automatic 9-spd | 20 MPG | 29 MPG | 23 MPG | — | $3,300 / yr |
Data Boundary Note: EPA specifications are shown by certified vehicle configuration. NHTSA complaints and recall totals are recorded at the model-year level across all configurations.
| Tested Drivetrain / Cab Variant | Overall Rating | Frontal Crash | Side Crash | Rollover Rating | Rollover Risk |
| -Class C RWD | Not Rated | Not Rated | Not Rated | Not Rated | — |
Active Driver Assistance Systems (NHTSA Recorded): Forward Collision Warning (FCW) is documented as Optional and Lane Departure Warning (LDW) is documented as Optional in official NHTSA records for tested 2017 Mercedes-Benz SLC models.
View complete 2017 Mercedes-Benz SLC crash test & safety breakdown →
Top Reported Problem Categories
Ranked by total consumer complaint submissions recorded by NHTSA
Data Attribution & Context: Complaints are self-reported by vehicle owners to NHTSA and represent unverified consumer submissions. Complaint volume does not equal a statistically controlled failure rate and is not adjusted for total vehicles sold or cumulative mileage driven.
View all 2017 Mercedes-Benz SLC problems & component breakdown (4 categories) →
Affected Component: ELECTRICAL SYSTEM:SOFTWARE
Defect Summary: 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 model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
Free Manufacturer Remedy: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025.
Affected Component: ELECTRONIC STABILITY CONTROL (ESC)
Defect Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2015 SLK 250, 2016 SLK 350, 2016-2017 SLC 300, and 2017 SLC 43 AMG vehicles. In these vehicles, the electronic stability control (ESC) system software may incorrectly keep the brakes slightly applied.
Free Manufacturer Remedy: MBUSA will notify owners, and dealers will update the software for the ESC system, free of charge. The recall began June 9, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
View all 2017 Mercedes-Benz SLC recalls & campaign history (2 campaigns) →