Owners have filed 251 complaints on the Mercedes-Benz SL-Class, covering 2003–2020. The system named most often is Electrical System (2 reports). Worst years by volume: 2003, 2004, 2005; cleanest: 2016, 2018, 2020. 13 reports describe a crash, 15 a fire, 1 a death. On average the car was 9.2 years old when the problem happened.
What breaks on Mercedes-Benz SL-Class
Grouped by the system owners named — percentages are shares of all 251 SL-Class complaints. Open any row for the full reports in owners' own words.
Electrical System 2 Read
The contact owns a 2020 mercedes-benz sl450. The contact received notification of NHTSA campaign number: 21V058000 (communication, electrical system) that stated that the remedy was available. The contact notified james motor company mercedes-benz (2440 richmond rd, lexington, ky 40502) however, the dealer informed…
2017 mercedes benz sl 550. Consumer writes in regards to defective pre safe option on vehicle. *ld the consumer states the safety belts tighten restricting and distracting the driver when it is unnecessary to do so. The failure occurs in one particular spot where two metal plates overlap in the street
Steering 1 Read
Steering wheel stuck in up position. It would not adjust to the preset upon entering the vehicle. Found a fix online turned off the easy entry/exit feature and had to slap the wheel downward to get it unstuck. If this happens in motion it could lead to loss of control and driving with the wheel in full up position…
Service Brakes 1 Read
2007 mercedes benz sl500. Consumer writes in regard to brake failure. The consumer stated while approaching a stop sign the brakes failed to engage. The vehicle rolled through the stop sign. The vehicle experienced a catastrophic failure of the sensotronic braking control. The vehicle fault codes were 5611, c26de,…
Power Train 1 Read
When pulling into an intersection after stopping at a 3-way stop the car unexpectedly went into neutral gear. An oncoming car had to stop suddenly to avoid a collision. I was able to shift the car back to drive and got it home. Now the car will not start and there's a warning message on the dash saying to get the car…
SL-Class years to avoid — and the clean ones
Complaints per model year. More reports usually means more cars on the road as well as more trouble, so read the crash and fire columns alongside the count.
| Model year | Complaints | Top system | Crashes | Fires |
|---|---|---|---|---|
| 2020 | Electrical System,communication | — | — | |
| 2018 | Unknown Or Other | — | — | |
| 2017 | Electrical System | — | — | |
| 2016 | Tires | — | — | |
| 2015 | Engine | — | — | |
| 2014 | Air Bags | — | — | |
| 2013 | Electrical System,exterior Lighting | 1 | — | |
| 2011 | Air Bags,structure,engine | 1 | — | |
| 2009 | Electrical System | — | 1 | |
| 2008 | Engine And Engine Cooling | — | — | |
| 2007 | Air Bags,service Brakes,visibility/wiper | — | 3 | |
| 2006 | Electrical System | — | — | |
| 2005 | Air Bags | 3 | 2 | |
| 2004 | Electrical System | 4 | 3 | |
| 2003 | Air Bags | 4 | 6 |
The same model year, different builds
Every complaint carries the first 11 characters of the VIN — plant, year, body and engine. That is a production series, and complaints are spread across them very unevenly.
| Measure | Value |
|---|---|
| Distinct production series | 116 |
| Average complaints per series | 2.2 |
| Worst single series | 11 complaints |
| Average age at failure | 9.2 years |
A model average of 2.2 hides a worst series at 11. Enter a VIN above to see the numbers for that exact build instead of the model as a whole.
Owners reported these. Find out if yours is one of them.
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How we count
Every figure here comes from complaints owners filed with NHTSA — 1,100,006 of them, covering 1,982 models built between 1981 and 2026.
A complaint is an unverified report: someone wrote down what happened to their car. It is not a confirmed defect and not a recall. What makes the volume useful is the pattern — when thousands of owners of the same build describe the same failure, that is a signal no marketing brochure will give you.
Two things we do that the source does not. First, we compute the age of the car at the moment of failure from the incident date and the model year. Second, we group complaints by the first 11 characters of the VIN — the production series — so a bad plant run does not disappear into a model-wide average.
Frequently asked questions
What are the worst years for the SL-Class?
By complaint volume, 2003, 2004, 2005 drew the most owner reports. Bear in mind that popular years put more cars on the road, so check the crash and fire columns too.
Which SL-Class years are the cleanest?
2016, 2018, 2020 have the fewest complaints on file. For recent years that can simply mean the cars are young.
How many complaints does the Mercedes-Benz SL-Class have?
251 owner complaints filed with NHTSA, covering 2003–2020. Of those, 13 describe a crash and 15 a fire.
Are these complaints verified?
No. They are unverified reports from owners. NHTSA publishes them as filed and investigates only a fraction. The value is in the pattern, not in any single report.
Can I check complaints for one specific car?
Yes — enter its VIN above. We match the first 11 characters, which identify the plant, year, body and engine, so you get complaints on that exact production series rather than the whole model.