SL-Class (R230)
Reliability Score
Complaints by Engine Code
5.0-V8-Gas
5.0L 8-cyl / 302 hpView details
Complaint Breakdown
5.5-V8-Gas
5.5L 8-cyl / 493 hpView details
Complaint Breakdown
Mercedes-Benz SL-Class Unidentified Engine
View details
Complaint Breakdown
Show 5 additional engine variants with limited data
5.5-V12-Gas
5.5L 12-cyl / 493 hpView details
Complaint Breakdown
3.2-V6-Gas
3.2L 6-cyl / 215 hpView details
Complaint Breakdown
6.0-V12-Gas
6.0L 12-cyl / 604 hpView details
Complaint Breakdown
5.0-V12-Gas
5.0L 12-cyl / 315 hpView details
Complaint Breakdown
6.2-V8-Gas
6.2L 8-cylView details
Complaint Breakdown
Owner Complaints by System
Complaints owners filed with NHTSA about the Mercedes-Benz SL-Class, counted across every engine. A complaint can name more than one system.
What to check on a used 2003-2012 Mercedes-Benz SL-Class
On a used 2003-2012 Mercedes-Benz SL-Class, the systems with the most NHTSA owner complaints are the suspension (75), the brakes (68) and the electrical system (45). Each one has an inspection step below, with counts as of 2026-10-12. A complaint is an owner report, not a confirmed defect, and counts rise with sales.
- Drive over a speed bump and a rough patch at 15 to 20 mph with the radio off.Safety. NHTSA has 75 owner complaints on the 2003-2012 Mercedes-Benz SL-Class about the suspension.
- On an empty road, brake firmly from 40 mph with a light grip on the wheel.Safety. NHTSA has 68 owner complaints on the 2003-2012 Mercedes-Benz SL-Class about the brakes.
- Switch on every electrical item in turn: lights, windows, locks, wipers, climate fan, screen and power outlets.Costly repair. NHTSA has 45 owner complaints on the 2003-2012 Mercedes-Benz SL-Class about the electrical system.
- Let the engine idle for five minutes, walk around the car and smell for fuel.Safety. NHTSA has 39 owner complaints on the 2003-2012 Mercedes-Benz SL-Class about the fuel system, all engines combined.
- Accelerate gently through every gear, then once at full throttle. Shift into Reverse and back to Drive.Costly repair. NHTSA has 17 owner complaints on the 2003-2012 Mercedes-Benz SL-Class about the transmission and drivetrain, all engines combined.
Recalls (2)
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2010 E350, 2014 G550, 2008-2009 C300, 2008 C350, 2009 CLK550, 2007 SL550, SLK280, and 2008 SLK350 vehicles. Various control units may have been updated with incorrect software configuration during a service repair. This can result in various system failures, such as loss of drive power, reduced exterior lighting, or loss of dynamic control functions, including stability and traction control.
MERCEDES BENZ IS RECALLING 4,564 MY 2001-2006 CL-CLASS (MODEL 215), MY 2002-2006 S-CLASS (MODEL 220), MY 2003-2007 SL-CLASS (MODEL 230), MY 2007-2008 CL-CLASS (MODEL 216), AND MY 2007 S-CLASS (MODEL 221)PASSENGER VEHICLES EQUIPPED WITH ACTIVE BODY CONTROL (ABC) ACCELERATION SENSORS ON THE FRONT STRUTS. THESE SENSORS MEASURE ACCELERATION AROUND THE Z-AXIS OF THE VEHICLE AND ASSURE AN AUTOMATIC ADAPTATION OF THE FRONT STRUTS TO MAINTAIN A RELATIVELY LEVEL BODY POSITION. VARIATIONS IN THE SOLDERING PROCESS RESULTED IN SOLDERING POINTS ON THE BOARD OF THE ABC SENSORS WHICH MAY NOT BE WITHIN DESIGN TOLERANCES. SIGNALS FROM THE AFFECTED SENSORS MEASURING THE ACCELERATION MAY NOT BE ACCURATELY TRANSMITTED TO THE ENGINE CONTROL UNIT.
All Generations
Alternatives in Roadster
Frequently Asked Questions
What are the most common 2003-2012 Mercedes-Benz SL-Class complaints?
Owners have filed 252 complaints with NHTSA about the 2003-2012 Mercedes-Benz SL-Class. The systems they name most often are the suspension, the brakes and the electrical system.
Is the 2003-2012 Mercedes-Benz SL-Class a good used car?
That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 252 complaints with NHTSA about the 2003-2012 Mercedes-Benz SL-Class. Check which systems they name most often and whether a recall is still open on that car.
How many NHTSA complaints does the 2003-2012 Mercedes-Benz SL-Class have?
NHTSA has 252 owner complaints on file for the 2003-2012 Mercedes-Benz SL-Class as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.
What recalls affect the 2003-2012 Mercedes-Benz SL-Class?
NHTSA lists 2 recalls covering some 2003-2012 Mercedes-Benz SL-Class vehicles. Which ones apply depends on the VIN: enter it at nhtsa.gov/recalls to see the open campaigns on a specific car.
What should I check before buying a used Mercedes-Benz SL-Class?
Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the suspension, the brakes and the electrical system, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.
Does the SL-Class have NHTSA crash test ratings?
NHTSA has not published crash test ratings for the 2003-2012 Mercedes-Benz SL-Class. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.
Data from NHTSA federal complaints database. 252 complaints analyzed. Data confidence: high. Last updated: 2026-10-12.