Mercedes Benz SL CLASS problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
21 owner complaints analyzed
6 distinct recall campaigns
23,000 mi median reported failure mileage
Scope: 1996 to 2009 model years. Data snapshot: . 13 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Service Brakes, Hydraulic is the most frequently named component, appearing in 4 of 21 complaints (19.0%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 5 | 23.8% |
| Electrical and battery issues | 3 | 14.3% |
| Fuel system concerns | 2 | 9.5% |
| Transmission and shifting | 1 | 4.8% |
| Engine operation | 1 | 4.8% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes, Hydraulic | 4 |
| Suspension | 3 |
| Air Bags:Frontal | 2 |
| Engine And Engine Cooling | 2 |
| Suspension:Front | 2 |
| Tires | 2 |
| Vehicle Speed Control | 2 |
| Air Bags | 1 |
Service Brakes, Hydraulic: 4; Suspension: 3; Air Bags:Frontal: 2; Engine And Engine Cooling: 2; Suspension:Front: 2; Tires: 2; Vehicle Speed Control: 2; Air Bags: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 8 |
| 25,000 to 49,999 | 3 |
| 50,000 to 74,999 | 2 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 8; 25,000 to 49,999: 3; 50,000 to 74,999: 2; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (8). 8 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2000 | 1 |
| 2003 | 4 |
| 2004 | 3 |
| 2005 | 4 |
| 2007 | 2 |
| 2008 | 3 |
| 2009 | 1 |
| 2010 | 1 |
| 2012 | 1 |
| 2013 | 1 |
2000: 1; 2003: 4; 2004: 3; 2005: 4; 2007: 2; 2008: 3; 2009: 1; 2010: 1; 2012: 1; 2013: 1
Pattern summary
Service Brakes, Hydraulic leads the component reports. Braking behavior appears in 5 complaint narratives. Electrical and battery issues appears in 3 complaint narratives. Fuel system concerns appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10011478 · 2003-03-27 (March 27, 2003)
THE BRAKE SYSTEM VACUUM BOOSTER DID NOT HOLD THE VACUUM AND CAUSED A HISSING NOISE WHEN THE BRAKES WERE APPLIED. THE BRAKE WARNING LIGHT NEVER ILLUMINATED TO INDICATE A PROBLEM. THE CONSUMER REQUESTED A REFUND FOR A PORTION OF THE REPAIR COST. PH *NLM
Owner-reported narrative. 24,870 miles reported. Look up ODI 10011478 at NHTSA ↗
Owner report 10086211 · 2004-08-05 (August 5, 2004)
HYDRAULIC BRAKE FAILURE, TOTALLY UNEXPECTED. CAR IS A MARCEDES BENZ SL500, 2003. ONLY 8,500 K. ON 6-24-04, MB ISSUED A SAFETY BULLETIN (NHTSA CAMPAIGN ID NO. 04V296000)MB HAS NOT NOTIFIED OWNERS LIKE ME. I RUN A 4-WAY STOP SIGN AND A LARGE PICK-UP TRUCK WAS WITHIN 1 OR 2 FEET FROM HITTING ME ON THE DRIVERS' SIDE. IWAS ABLE TO STOP THE CAR ABOUT 50 YARDS AFTER THE STOP SIGN. MESSAGGE --IN RED LETTERS IN THE DASHBOARD-- WICH SAID "REDUCED BRAKE EFFECT. VISIT WORKSHOP".. I WAS NOT INJURED PHYSICALLY, BUT THIS WAS A NEAR DEATH EXPERIENCE. THIS H…
Owner-reported narrative. 8,000 miles reported. Look up ODI 10086211 at NHTSA ↗
Owner report 10198184 · 2007-08-01 (August 1, 2007)
1996 MERCEDES BENZ SL 600 WIRING HARNESS FAILURE AUTHORIZED DEALER REPORTS THAT THIS IS A TYPICAL FAILURE OF AN OLDER MERCEDES WITH ONLY 60,000 MILES. THIS FAILURE IS KNOW THROUGH OUT THE INDUSTRY BUT IT HAS NEVER BEEN RECOGNIZED BY MB CONSEQUENTLY NO RECALL. THE CAR RUNS SLUGGISHLY AND I HAVE BEEN WARNED THAT IT IS A FIRE HAZARD. COST OF REPAIR IS ESTIMATED AT $3100????? *JB
Owner-reported narrative. Look up ODI 10198184 at NHTSA ↗
Owner report 10031228 · 2003-08-15 (August 15, 2003)
THE HEATER MOTOR HAD BLOWN OUT. THE VEHICLE BOX CAUGHT ON FIRE. *AK THE FIRE MELTED THE MELTED THE WIRING HARNESS. *SCC *JB
Owner-reported narrative. 2,600 miles reported. Look up ODI 10031228 at NHTSA ↗
Owner report 10225603 · 2008-04-24 (April 24, 2008)
NO INCIDENT. WAS DRIVING AND AS I PULLED INTO MY DRIVEWAY, HEARD BUMPING SOUND FROM CAR. ASKED MERCEDES WHAT IT WAS, THEY SAID LOOSE BAFFLE IN GAS TANK. SOUNDS LIKE MANUFACTURING DEFECT. CHECKED ONLINE AND FOUND MANY OTHERS WITH SAME PROBLEM. IT IS A COSTLY REPAIR JUST OUTSIDE OF WARRANTY PERIOD. *TR
Owner-reported narrative. 43,300 miles reported. Look up ODI 10225603 at NHTSA ↗
Owner report 10442669 · 2012-01-06 (January 6, 2012)
SOMETHING CALLED AN ABC PUMP AND BLOCK HAS FAILED AND CAR DROPS DOWN ON FRAME. SPENT $3200 ON THE PUMP TO DRIVE 2 MONTHS BEFORE THEY WANT $3800 TO REPAIR THE VALVE BLOCK. BOTH TIMES THE VEHICLE DROPS AND IS DANGEROUS TO DRIVE. THIS IS IN ADDITION TO A BAFFLE COMING LOOSE IN THE GAS TANK THAT HAS METAL BASHING METAL INSIDE THE GAS CELL. *TR
Owner-reported narrative. Look up ODI 10442669 at NHTSA ↗
Owner report 10095713 · 2004-10-13 (October 13, 2004)
THE VEHICLE (2003 MB SLK320) WAS PURCHASED ON 4/14/2004 IN AZ AND BEGAN NOTICING PROBLEMS ON THE DRIVE BACK TO NM. THE MOST SIGNIFICANT SAFETY PROBLEM INVOLVES THE TRANSMISSION, WHICH HAS BEEN SERVICED BY THE MANUFACTURER 8 TIMES WITHOUT RESOLUTION. THE VEHICLE SLIPS IN AND OUT OF GEAR AT HIGHWAY SPEEDS. THE VEHICLE HAS SPENT A TOTAL OF OVER 68 DAYS IN THE SHOP FOR UNSATISFACTORY REPAIRS IN A ONE-YEAR PERIOD. TO THIS DATE, THE MANUFACTURER HAS BEEN UNCOOPERATIVE IN RESOLVING THESE PROBLEMS FORCING ME TO SEEK LEGAL SERVICES.*AK
Owner-reported narrative. 9,132 miles reported. Look up ODI 10095713 at NHTSA ↗
Owner report 10046516 · 2003-11-06 (November 6, 2003)
WHILE DRIVING AT 45 MPH, THE VEHICLE STALLED. THE DRIVER TRIED TO RESTART THE VEHICLE. THE DRIVER TOOK THE VEHICLE TO THE DEALER FOR ANALYSIS. THE MECHANIC REPLACED GASKET AND OTHER PARTS.
Owner-reported narrative. Look up ODI 10046516 at NHTSA ↗
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 0 |
| 2002 | 0 |
| 2003 | 3 |
| 2004 | 3 |
| 2005 | 1 |
| 2006 | 1 |
| 2009 | 1 |
1996: 2; 1997: 1; 1998: 0; 2002: 0; 2003: 3; 2004: 3; 2005: 1; 2006: 1; 2009: 1