What breaks most · 1998 to 2004 model years
Mercedes-Benz SLK230 problems by year
Owners have filed 150 safety complaints with NHTSA about the Mercedes-Benz SLK230 across model years 1998 to 2004. Three years stand out: 1999 for visibility complaints, 1998 for exterior lighting complaints and 2001 for exterior lighting complaints.
- Years to check closely: 1999, 1998, 2001
- Complaints on file
- 1501998 to 2004, all trims
- Worst year
- 199959 complaints
- Crashes reported
- 45 fires · 3 injuries · 0 deaths
- Typical failure mileage
- 61kMedian where owners gave mileage
- Recall campaigns
- 0Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 34 | 0 | 0 | Exterior lighting (14) | |
| 59 | 2 | 0 | Visibility (22) | |
| 22 | 1 | 0 | Exterior lighting (9) | |
| 31 | 1 | 0 | Exterior lighting (10) | |
| 4 | 0 | 0 | Electrical system (2) |
What fails on the 1999 Mercedes-Benz SLK230
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| VisibilityMirrors and glass | 37% |
22 | 1 | Shop all visibility parts, not filtered to this vehicle |
| Exterior lightingHeadlights, tail lights and bulbs | 27% |
16 | 0 | Shop exterior lighting parts for the 1999 Mercedes-Benz SLK230 |
| Electrical systemAlternators, starters and ignition | 24% |
14 | 1 | Shop electrical system parts for the 1999 Mercedes-Benz SLK230 |
| Unknown or other | 5% |
3 | 0 | — |
| Fuel systemFuel pumps and injectors | 5% |
3 | 0 | Shop fuel system parts for the 1999 Mercedes-Benz SLK230 |
| Equipment and infotainment | 3% |
2 | 0 | — |
| EngineEngine gaskets and seals | 3% |
2 | 0 | Shop engine parts for the 1999 Mercedes-Benz SLK230 |
| Powertrain and transmissionTransmission parts | 3% |
2 | 2 | Shop all powertrain and transmission parts, not filtered to this vehicle |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
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Rear view mirror ( donnelly #010486) is blurry and has three different shades of tinting. I can barely tell if a vehicle is behind me and there is no way to determine its distance.
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Rear brake light will stop working periodically due to melted socket. Owned the car since new and dealer replace sockets twice while under warranty. Since warranty expired i replaced the socket twice more on each side at a cost of $20. *jb
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Consumer complaint concerning 2001 benz slk230 safety recall #2006-08005. *ts the consumer was informed his vehicle identification number was not included in the recall. *jb
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Mercedes-Benz SLK230 years have the most problems?
By NHTSA complaint volume, 1999, 1998, 2001 carry the most filings on the Mercedes-Benz SLK230. The 1999 alone has 59 complaints, led by visibility.
What is the most common Mercedes-Benz SLK230 problem?
On the 1999 model year, the most-reported component is visibility with 22 complaints. The table above lists the top components for every year.
At what mileage do Mercedes-Benz SLK230 problems start?
The median mileage at failure across all Mercedes-Benz SLK230 complaints that include mileage is about 61,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.