Most common 2014 Mercedes-Benz SL550 problems
Share of the 4 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz SL550 complaints by model year
Best SL550 years: 2018, 2019, 2015. Years to avoid: 2013. Compare all years →
2014 Mercedes-Benz SL550 recalls (4)
Communication
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location.
Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge.
Electrical system › Software
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles, 2008-2014 C300 vehicles, 2013-2014 C300 4Matic and ML350 4Matic vehicles, 2009 C350 vehicles, 2014 CLS550, E350 4Matic, E350 Coupe 4Matic, E350 Wagon 4Matic, GLK350 and…
Remedy: MBUSA will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
Steering › Electric power assist system
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2013-2015 SL550, 2013-2014 SL63 AMG, 2014-2016 E350, 2014 E350 Cabriolet, E350 Coupe, 2014-2015 S550, 2015 E350 Bluetec, 2015-2016 E400, 2016 E550 Coupe, and Maybach S600 vehicles manufactured August 23, 2012, to August 14, 2015.
Remedy: MBUSA will notify owners, and dealers will replace the electric power steering control unit, free of charge. The recall began October 13, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
Air bags
Mercedes-Benz USA, LLC (Mercedes-Benz) is recalling certain model year 2014 SLK 250, SLK 350, SLK 55 AMG, SL 550, SL 63 AMG, and SL 65 AMG vehicles manufactured March 19, 2014, through May 5, 2014. Due to an air bag assembly error, the front passenger air bag may not deploy properly.
Remedy: Mercedes-Benz will notify owners, and dealers will replace the front passenger air bag, free of charge. Mercedes-Benz distributed an interim letter to owners on July 17, 2014.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2014 Mercedes-Benz SL550:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
2014 Mercedes-Benz SL550 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 4.7L 8-cyl turbo | 7-speed automatic | RWD | 18 / 24 / 20 |
EPA ratings. Class: Sports car.
Frequently asked questions
Is the 2014 Mercedes-Benz SL550 a good car?
Based on 4 owner complaints filed with NHTSA, the 2014 SL550 rates better than average: 43% fewer complaints than a typical year of the SL550 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2014 Mercedes-Benz SL550?
The wheels & tires — 2 complaints, 50% of all complaints for this model year, most often about rim. Next are the air bags (1) and body & structure (1).
How many recalls does the 2014 Mercedes-Benz SL550 have?
There are 4 recalls for the 2014 Mercedes-Benz SL550, the most recent from November 1, 2019 (communication). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Mercedes-Benz SL550?
The best years by complaints, compared at the same age, are 2018, 2019 and 2015. Years to avoid or approach with caution: 2013. See the full Mercedes-Benz SL550 years comparison.
At what mileage do 2014 Mercedes-Benz SL550 problems happen?
The median mileage reported in complaints is about 21,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
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.