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2020 Mercedes-benz Sl-class
Limited data: few reports on file, read the verdict loosely
Too few owner complaints are on file to affirm this car. Treat it as unproven, not endorsed, and lean hard on a professional pre-purchase inspection.
2 owner complaints · 0 recalls · data verified July 14, 2026 · source: NHTSA
What the record shows so far
Only 2 owner complaints on file for this exact model year, too few to judge long-term reliability. Treat this as unproven, not endorsed, and lean on a professional inspection.
The math, shown
Full methodology →How it crashes
NHTSA’s own crash tests, separate from the reliability score above.
NHTSA crash-tested this model year but didn’t publish an overall star rating for it.
Source: nhtsa.gov/ratings. Star ratings compare vehicles within the same class and size, not across every car on the road.
The road ahead
What breaks on a 2020 Mercedes-benz Sl-class, plotted where owners report it happening.
Transmission & drivetrain
50%1 complaints · 1 in the last 2 years
“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…”
Speed control
50%1 complaints · 1 in the last 2 years
“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…”
Engine
50%1 complaints · 1 in the last 2 years
“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…”
Electrical system
50%1 complaints
“TL* THE CONTACT OWNS A 2020 MERCEDES-BENZ SL450. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 21V058000 (COMMUNICATION, ELECTRICAL SYSTEM) THAT STATED T…”
Recalls (0)
No recall campaigns on file for this model year.
Before you hand over money
Check the VIN for open recalls
NHTSA’s free lookup shows whether this exact car had its recall remedies completed.
Free NHTSA VIN check ↗Get a pre-purchase inspection
A $150 to $250 independent inspection of this exact 2020 Mercedes-benz SL-CLASS beats every score on the internet, including ours.
What to ask forNot set on the 2020? See how every Sl-class model year scores →
Cross-shopping? Compare the 2020 Mercedes-benz Sl-class against another car →
What owners say
Real owners of this exact model-year, shown separately from the NHTSA score. If they disagree, that’s worth knowing.