2003 Mercedes-Benz Sl500 problems
Verdict · NHTSA data
One of the years to avoid
With 108 complaints filed to NHTSA — about 12.0 times the median Sl500 year — the 2003 model ranks #1 of 15 Sl500 years for complaint volume. It lands on the years-to-avoid list.
Suspension leads the complaint categories with 34 reports (32% of the total).
108
NHTSA complaints
0
Recalls
1
Investigations
2
Crash-involved
8
Fires reported
1
Injuries
0
Deaths
—
NCAP overall
How does 2003 compare to other Sl500 years?
What are the most common 2003 Mercedes-Benz Sl500 problems?
| Component | Complaints | Share | vs prior year |
|---|---|---|---|
| Suspension | 34 | 31% | new |
| Fuel System | 20 | 19% | ▲ up |
| Electrical System | 15 | 14% | ▲ up |
| Brakes | 14 | 13% | ▲ up |
| Steering | 6 | 6% | ▲ up |
| Engine | 6 | 6% | ▲ up |
| Airbags | 4 | 4% | — flat |
| Transmission | 4 | 4% | ▲ up |
| Body & Structure | 3 | 3% | ▲ up |
| Other | 1 | 1% | — flat |
| Seat Belts | 1 | 1% | ▼ down |
Consumer complaints filed with NHTSA
Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.
“TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SL500. WHILE DRIVING INTO THE GARAGE, THE ABC PUMP WARNING INDICATOR ILLUMINATED AND THE CONTACT NOTICED SMOKE INSIDE THE VEHICLE. IN ADDITION, THE CONTACT NOTICED A LARGE AMOUNT OF HYDRAULIC FLUID ON THE GARAGE FLOOR. THE VEHICLE WAS TOWED TO A DEALER…”
“TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SL500. WHILE DRIVING INTO THE GARAGE, THE ABC PUMP WARNING INDICATOR ILLUMINATED AND THE CONTACT NOTICED SMOKE INSIDE THE VEHICLE. IN ADDITION, THE CONTACT NOTICED A LARGE AMOUNT OF HYDRAULIC FLUID ON THE GARAGE FLOOR. THE VEHICLE WAS TOWED TO A DEALER…”
“To who may this concerned, I have a 2003 Mercedes SL500 and recently found my battery control module caught on fire and burnt a section of my car. I have tried reaching out to Mercedes directly first and they said the car is 20 years ago and it could have not be a manufactured defect. Please I need…”
“TL* THE CONTACT OWNS A 2003 MERCEDES BENZ SL500. THE CONTACT STATED THAT WHILE DRIVING 25 MPH, SHE SMELLED SMOKE COMING FROM THE ENGINE. THE CONTACT STATED THAT THE ABC AND STOP VEHICLE TOO LOW WARNING LIGHTS ILLUMINATED. THE CONTACT MENTIONED THAT WHILE DRIVING, THE FRONT END OF THE VEHICLE…”
“TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SL500. WHILE DRIVING INTO THE GARAGE, THE ABC PUMP WARNING INDICATOR ILLUMINATED AND THE CONTACT NOTICED SMOKE INSIDE THE VEHICLE. IN ADDITION, THE CONTACT NOTICED A LARGE AMOUNT OF HYDRAULIC FLUID ON THE GARAGE FLOOR. THE VEHICLE WAS TOWED TO A DEALER…”
2003 Mercedes-Benz Sl500 — common questions
Is the 2003 Mercedes-Benz Sl500 reliable?
NHTSA data argues against it: 108 complaints put the 2003 model at #1 of 15 Sl500 years. It is one of the Sl500 years to avoid.
What are the most common 2003 Sl500 problems?
According to NHTSA complaint data, the leading problem areas are suspension (34 complaints), fuel system (20 complaints), electrical system (15 complaints).
Does the 2003 Mercedes-Benz Sl500 have recalls?
No. NHTSA lists no recall campaigns for the 2003 Mercedes-Benz Sl500.
Is the 2003 Mercedes-Benz Sl500 under NHTSA investigation?
NHTSA opened one investigation into this model year; all are now closed.
Which Mercedes-Benz Sl500 years should you avoid?
Based on complaint rates and open investigations, the Sl500 years to avoid are 2003, 2004, 1995. The cleanest record among Sl500 years belongs to 2000.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.