The 2020 Mercedes-Benz SL is associated with 2 official NHTSA owner defect complaints and 1 safety recall campaign in the federal safety database. The most frequently reported component area is ELECTRICAL SYSTEM,COMMUNICATION, accounting for 1 reports (50% of total complaints). EPA testing covers 4 certified vehicle configurations spanning 2l 4-cyl, 3l 6-cyl, and 4.7l 8-cyl configurations. Gasoline and hybrid variants deliver 20 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: 2 reports
  • • Safety Recall Campaigns: 1 campaign
  • • Top Reported Defect Area: ELECTRICAL SYSTEM,COMMUNICATION (1 / 50%)
  • • Safety Incident Signals: 1 crash / 0 fire / 1 injury reports
  • • NHTSA Overall Safety Rating: Not rated by NHTSA
  • • EPA Efficiency: 20–27 MPG (4 variants)
Data Note: Compiled directly from official NHTSA Office of Defects Investigation (ODI), NHTSA 5-Star Safety Ratings, and EPA FuelEconomy.gov databases.
Fuel Economy
20–27MPG
4 EPA certified variants (2l 4-cyl, 3l 6-cyl, and 4.7l 8-cyl configurations)
Reported Complaints
2
2 submitted owner reports
Safety Recalls
1
1 official NHTSA recall
NCAP Safety Rating
Not rated by NHTSA

What is the fuel economy and range of the 2020 Mercedes-Benz SL?

Official EPA laboratory test ratings, electric driving range, and annual energy cost estimates by certified vehicle variant

Variant Engine Drivetrain Transmission City Highway Combined EV Range Est. Annual Fuel Cost
SLC300 2L 4-Cyl Rear-Wheel Drive Automatic 9-spd 23 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
SL450 3L 6-Cyl Rear-Wheel Drive Automatic 9-spd 20 MPG 28 MPG 22 MPG — $3,450 / yr
SL550 4.7L 8-Cyl Rear-Wheel Drive Automatic 9-spd 17 MPG 25 MPG 20 MPG — $3,800 / 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.

What are the crash test safety ratings for the 2020 Mercedes-Benz SL?

Official 5-Star Safety Ratings evaluated by the National Highway Traffic Safety Administration

NHTSA 5-Star NCAP laboratory crash evaluations are not currently on file for the 2020 Mercedes-Benz SL.

Active Driver Assistance Systems (NHTSA Recorded): Forward Collision Warning (FCW) is documented as Not Specified and Lane Departure Warning (LDW) is documented as Not Specified in official NHTSA records for tested 2020 Mercedes-Benz SL models.
View complete 2020 Mercedes-Benz SL crash test & safety breakdown →

What defect complaints are reported for the 2020 Mercedes-Benz SL?

Summary of 2 verified consumer defect submissions filed with the NHTSA Office of Defects Investigation (ODI)

Total Complaints
2
Crash Reports
1
Fire Reports
0
Complaints w/ Injury
1
Total Injuries
1

Top Reported Problem Categories

Ranked by total consumer complaint submissions recorded by NHTSA

ELECTRICAL SYSTEM,COMMUNICATION 1 complaint
POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE 1 complaint (1 crash)

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 2020 Mercedes-Benz SL problems & component breakdown (2 categories) →

Are there open safety recalls on the 2020 Mercedes-Benz SL?

Manufacturer safety recall campaigns monitored and recorded by NHTSA

NHTSA Campaign #21V058000 Active Recall
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.
View all 2020 Mercedes-Benz SL recalls & campaign history (1 campaigns) →
Official US Government Data Provenance

The specifications, safety ratings, defect reports, and recall campaigns published on this page are retrieved directly from official United States Government agency databases:

  • NHTSA Office of Defects Investigation (ODI): Consumer complaints and defect reports.
  • NHTSA New Car Assessment Program (NCAP): Frontal, side, and rollover 5-Star crash safety test ratings.
  • U.S. EPA / FuelEconomy.gov: Standardized multi-cycle dynamometer fuel economy, MPGe, and electric driving range ratings.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.