Complaints by model year
* Complaints compared with the median SL450 year at the same age, so new and old years are judged fairly. How this works.
Most common Mercedes-Benz SL450 problems
Latest Mercedes-Benz SL450 recalls
Communication › Auto crash notification
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details.
Remedy: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022.
Communication › Auto crash notification
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.
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.
Power train › Axle assembly
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019 SL450, SL63 AMG, and SL550 vehicles. Over time, the bolt connection at the front-left mounting point on the rear axle carrier casting may fail, possibly affecting the vehicle's handling.
Remedy: MBUSA will notify owners, and dealers will inspect the front-left mounting point of the rear axle carrier. If a defect in the bolt connection of the rear axle carrier is found, MBUSA will contact the owner and offer a…
Air bags › Frontal › Passenger side › Inflator module
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2018 SL65 AMG, 2019 SL63 AMG and 2018-2019 SL450 and SL550 vehicles. The front passenger air bag may have been improperly sewn, allowing the seam to tear during deployment.
Remedy: MBUSA will notify owners, and dealers will replace the passenger air bag, free of charge. The recall began December 13, 2019. Owners may contact MBUSA customer service at 1-800-367-6372.
Frequently asked questions
What years of the Mercedes-Benz SL450 should you avoid?
None of the Mercedes-Benz SL450 years has an unusually high number of complaints compared with the others at the same age.
What are the most common Mercedes-Benz SL450 problems?
Across all years, owners report the most problems with the electrical system (1) and equipment & accessories (1). Electrical complaints peak in the 2020 model year.
How many recalls has the Mercedes-Benz SL450 had?
4 recalls across 2018–2020. The model year with the most is 2019. See all Mercedes-Benz SL450 recalls by year.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.