2005 Mercedes-Benz Slk350 problems
Verdict · NHTSA data
One of the years to avoid
With 36 complaints filed to NHTSA — about 9.0 times the median Slk350 year — the 2005 model ranks #1 of 9 Slk350 years for complaint volume. It lands on the years-to-avoid list. Complainants reported 11 injuries in total across these filings.
No single system dominates the record — complaints spread across other (6), transmission (6), and suspension (5), which usually points to general build quality rather than one defect.
36
NHTSA complaints
0
Recalls
0
Investigations
5
Crash-involved
3
Fires reported
11
Injuries
0
Deaths
—
NCAP overall
How does 2005 compare to other Slk350 years?
What are the most common 2005 Mercedes-Benz Slk350 problems?
| Component | Complaints | Share | vs prior year |
|---|---|---|---|
| Transmission | 6 | 17% | new |
| Other | 6 | 17% | new |
| Suspension | 5 | 14% | new |
| Brakes | 5 | 14% | new |
| Engine | 4 | 11% | new |
| Fuel System | 3 | 8% | new |
| Electrical System | 2 | 6% | new |
| Visibility & Wipers | 1 | 3% | new |
| Lighting | 1 | 3% | new |
| Speed Control | 1 | 3% | new |
| Steering | 1 | 3% | new |
| Body & Structure | 1 | 3% | new |
Consumer complaints filed with NHTSA
Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.
“transmission lines popping off popped off at 60 miles per hour tensed me up it stared smoking pushed the safety hazzard lights on and was able to limp it off the highway its happened 3 times after i repaired them afraid to even drive it now.no no no”
“THE EMERGENCY BRAKE LINE CAUGHT FIRE UNDERNEATH THE ARM REST COMPARTMENT. TRACED THE LINE BACK TO REAR TIRES AND NOTHING ELECTRICAL COULD BE SEEN TOUCHING BRAKE CABLE LINE. SO NO OBVIOUS REASON WHY CABLE WOULD IGNITE. I WAS PARKED IN CAR PORT STALL AFTER A SHORT TRIP TO A FRIENDS HOUSE.”
“The brake lines are rusted from the rear sub Frame that was rusted And caused an accident. They told me the sub frame was the only item covered but that they could only bolt it and not weld if and then the exhaust and brake lines (rusted too bad to describe) werenât covered and since I couldnât…”
“THE EMERGENCY BRAKE LINE CAUGHT FIRE UNDERNEATH THE ARM REST COMPARTMENT. TRACED THE LINE BACK TO REAR TIRES AND NOTHING ELECTRICAL COULD BE SEEN TOUCHING BRAKE CABLE LINE. SO NO OBVIOUS REASON WHY CABLE WOULD IGNITE. I WAS PARKED IN CAR PORT STALL AFTER A SHORT TRIP TO A FRIENDS HOUSE.”
“TL*THE CONTACT OWNS A 2005 MERCEDES BENZ SLK350. THE CONTACT STATED THAT THE VEHICLE SUDDENLY SHUT OFF TWICE WHILE DRIVING 40 MPH. THERE WAS PLENTY OF FUEL IN THE VEHICLE DURING BOTH FAILURES. THE VEHICLE COULD NOT BE RESTARTED ONCE IT SHUT OFF. DURING THE SECOND FAILURE, THE VEHICLE CAME TO A…”
2005 Mercedes-Benz Slk350 — common questions
Is the 2005 Mercedes-Benz Slk350 reliable?
NHTSA data argues against it: 36 complaints put the 2005 model at #1 of 9 Slk350 years. It is one of the Slk350 years to avoid.
What are the most common 2005 Slk350 problems?
According to NHTSA complaint data, the leading problem areas are other (6 complaints), transmission (6 complaints), suspension (5 complaints).
Does the 2005 Mercedes-Benz Slk350 have recalls?
No. NHTSA lists no recall campaigns for the 2005 Mercedes-Benz Slk350.
Which Mercedes-Benz Slk350 years should you avoid?
Based on complaint rates and open investigations, the Slk350 years to avoid are 2005, 2012, 2007, 2008, 2014, 2015, 2013, 2016. The cleanest record among Slk350 years belongs to 2006.
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.