2020 Mercedes-Benz SL-Class
The 2020 Mercedes-Benz SL-Class is sold in the U.S. as a gas sports car with 2 EPA-rated configurations. The most efficient version, the SL450, is EPA-rated at 22 mpg combined. NHTSA lists 3 recall campaigns for this model year, 1 rated critical, which gives it a Safety Signal grade of C. Owners have filed 2 complaints, most often about the electrical system.
Specs & fuel economy
Source: EPA fueleconomy.gov| Configuration | Powertrain | Drive | Engine / motor | City | Hwy | Comb | Annual fuel* |
|---|---|---|---|---|---|---|---|
| SL450 | Gas | RWD | 3.0L 6-cyl turbo | 20 | 28 | 22 | $3,500 |
| SL550 | Gas | RWD | 4.7L 8-cyl turbo | 17 | 25 | 20 | $3,900 |
*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 41790, 41789.
Factory warranty running out?
The 2020 Mercedes-Benz SL-Class is in the years where transmission, electronics and drivetrain repairs land on the owner. Compare extended-coverage quotes in about two minutes.
Compare coverage →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Recalls (3)
Source: NHTSA recall databaseFuel System, Gasoline
2022030003Electrical System
2021020025Owner complaints
Source: NHTSA complaint database1 involved a crash · 0 a fire · 1 injuries · 0 deaths reported
Filed per year: 2021: 1 · 2026: 1
Most-cited components
What owners describe
Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.
Crash ratings
Source: NHTSA NCAPNHTSA has not published 5-Star crash ratings for this model year.
Other SL-Class model years
2027 Mercedes-Benz SL-Class
0 recalls · 0 complaints
A2026 Mercedes-Benz SL-Class
1 recalls · 0 complaints
A2025 Mercedes-Benz SL-Class
1 recalls · 0 complaints
C2024 Mercedes-Benz SL-Class
2 recalls · 0 complaints
F2023 Mercedes-Benz SL-Class
5 recalls · 1 complaints
D2022 Mercedes-Benz SL-Class
4 recalls · 8 complaints
C2019 Mercedes-Benz SL-Class
4 recalls · 0 complaints
B2018 Mercedes-Benz SL-Class
2 recalls · 2 complaints
A2017 Mercedes-Benz SL-Class
1 recalls · 4 complaints
A2016 Mercedes-Benz SL-Class
1 recalls · 1 complaints
Sources & method
Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). Floor 35. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Complaint counts and NHTSA crash ratings are shown separately and are not blended into the grade.
EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed weekly.