AI Damage2007 Mercedes-Benz SL 550: common problems
Owners of the 2007 Mercedes-Benz SL 550 filed 16 complaints with NHTSA, most often about service brakes and electrical system. Details by component below, with sources.
Key figures
- Owner complaints
- 16
What fails most often
- 1 Service brakes 50% of all complaints
- 2 Electrical system 19% of all complaints
- 3 Powertrain 13% of all complaints
- 4 Suspension 13% of all complaints
- 5 Air bags 6% of all complaints
- 6 Engine 6% of all complaints
- 7 Steering 6% of all complaints
- 8 Structure 6% of all complaints
- Service brakes: 8 complaints (50% of all).
- Electrical system: 3 complaints (19% of all).
- Powertrain: 2 complaints (13% of all).
- Suspension: 2 complaints (13% of all).
- Air bags: 1 complaints (6% of all).
Symptoms owners describe
How many of the 16 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Service brakes | 8 | 0 | 0 |
| Electrical system | 3 | 0 | 0 |
| Powertrain | 2 | 0 | 0 |
| Suspension | 2 | 0 | 0 |
| Air bags | 1 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Steering | 1 | 0 | 0 |
| Structure | 1 | 0 | 0 |
| Visibility | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The battery Warning light was on and the radio was not working either. I had the vehicle inspected by the Mercedes dealer and was told the batteries were being drained because the BCM (Battery Control Module) I was told there was nothing they can do because Mercedes discontinued the replacement parts.
The vehicle started shuddering significantly and lost traction and stability control. The contact veered to the side of the road. The contact was able to continue driving at slower speeds. The vehicle was taken to the dealer where it was diagnosed that the rear suspension shocks and ABC system needed to be replaced.
In mid-october, 2018 driving about 15 mph my brake light came on and then within approximately 5 seconds alarms started sounding and I totally lost all braking power. Mercedes of denver repaired. On december 17 same exact thing happened at an even slower speed but this time the loss of brakes was instantaneous.
This vehicle caught fire on its own while parked in a locked garage. The fire was in the trunk and involved various electrical and mechanical components and wiring harnesses. The car filled with dense smoke which coated everything with thick soot.
While driving 35 mph, the contact experienced catastrophic brake failure. The brake pedal traveled to the floorboard when depressed. The contact had to coast the vehicle off the road and apply extreme force to the brake pedal to stop the vehicle.
Complete failure of the instrument cluster... Fuel gauge / odometer / speed / tachometer / turning signals / temperature
Consumer writes in regards to several attempts to reach out to dealerships to repair vehicle engine failure. The spark plugs, valve, engine, transmission mounts and cam plugs on the left cylinder head were all replaced. However, two days later, the vehicle exhibited the same shake as before.
Frequently and intermittently (not every time) when I start my car's engine, the srs malfunction warning light and "take car to service facility" message display appear on the instrument panel.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 9,040 of 36,656 model years in the NHTSA data (top 25% most complained about).
On average one model year of the SL 550 has 5 complaints (13 years in the data). This year has 16, above average.
What to check before buying
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
Other years of this model
Questions and answers
What are the most common problems with the 2007 Mercedes-Benz SL 550?
Owner complaints to NHTSA most often mention: service brakes, electrical system, powertrain. Total complaints: 16. The most frequent symptoms in complaint texts: brake failure (19%), smoke, burning smell, fire (19%), warning lights, check engine (19%).
How many service bulletins (TSB) were issued for the 2007 Mercedes-Benz SL 550?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2007 Mercedes-Benz SL 550 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2007 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.