2020 Mercedes-benz Sl-class
The Verdict
The 2020 Mercedes-benz Sl-class has 2 owner complaints filed with NHTSA. The most reported issues are electrical (1 complaints) and engine (1 complaints). With a Klunk Score of 100/100, it earns a "Smooth Ride" rating. If you're shopping for a Mercedes-benz Sl-class, consider the 2016 model year which has 50% fewer complaints.
Safe Bet
The 2016 has 50% fewer complaints
View the 2016 Mercedes-benz Sl-class dashboard →
Klunk Score: Smooth Ride
This vehicle year has significantly fewer complaints than average. A reliable choice.
How is this calculated?
The Klunk Score ranks this vehicle year against all others in our database based on total owner complaints filed with NHTSA. 100 = fewest complaints (top tier), 0 = most complained-about. Scores above 60 are better than average; below 40 means more problems than most.
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Under the Hood
Each number is a complaint. Darker = bigger problem.
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Worst Problems
Complaints
I do Own a Mercedes-Benz 2020 SL-550. On August 27, 2025, I was stopped at the curb adjacent to my house at [XXX] . When I gently tried to go right into driveway of my house, the tire hit the curb. When I gently again tried to release the tire from the curb, the car all of the sudden jump into the air with high speed, and hit the corner of my garrage destroying the roll-up door. I could not control the car and the car was deemed to be a total loss. My position is that the incident happened due to malfunction of the Engine & Power Train which is a "Product-Defect" issue, causing me substantial damages. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
TL* THE CONTACT OWNS A 2020 MERCEDES-BENZ SL450. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 21V058000 (COMMUNICATION, ELECTRICAL SYSTEM) THAT STATED THAT THE REMEDY WAS AVAILABLE. THE CONTACT NOTIFIED JAMES MOTOR COMPANY MERCEDES-BENZ (2440 RICHMOND RD, LEXINGTON, KY 40502) HOWEVER, THE DEALER INFORMED THAT THEY WERE NOT AWARE OF THE RECALL SINCE THE REMEDY WAS TO BE PERFORMED OVER THE AIR. THE CONTACT INFORMED THE MANUFACTURER OF THE RECALL NOTICE AND WAS INFORMED THAT THEY WERE NOT AWARE OF THE RECALL. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. ## VIN PASSED ## MERCEDES-BENZ 2020 ##