Total Complaints
1 filings
MERCEDES-BENZ SLK320 · model year
2004 MERCEDES-BENZ SLK320
1 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2004MERCEDES-BENZSLK320 carries 1 consumer safety complaint in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2004 SLK320 is power train with 1 filings. Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2004 SLK320. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
1
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| POWER TRAIN | 1 |
Recent Complaints
20141020POWER TRAIN
AFTER PULLING CAR INTO GARAGE FOUND THAT SHIFTER WOULD NOT MOVE PAST NEUTRAL FROM DRIVE POSITION. THOUGH IGNITION KEY COULD BE TURNED FAR ENOUGH COUNTER-CLOCKWISE FOR ENGINE SHUTDOWN IT STOPPED SHORT OF BEING ABLE TO BE REMOVED. AFTER PROBLEM DIAGNOSED REPAIR REQUIRED COMPLETE REPLACEMENT OF ELECTRONIC SHIFTER MODULE COSTING OVER $1,000. I FOUND MULTIPLE COMPLAINTS FOR SAME PROBLEM ON GOOGLE FROM OTHER MERCEDES OWNERS. FORTUNATE THAT FAILURE HAPPENED IN MY GARAGE. IF EPISODE HAPPENED ON OPEN ROAD MAJOR INCIDENT COULD HAVE OCCURRED. I DID CONTACT MERCEDES CAC (CUSTOMER ASSISTANCE CENTER) TO REPORT PROBLEM BOTH BY PHONE & LETTER. THEIR REPRESENTATIVE OFFERED ONLY EXCUSES & INDICATED FAILURE WAS RESULT OF 'NORMAL WEAR & TEAR' THAT SHOULD BE EXPECTED IN VEHICLE 10 YEARS OLD REGARDLESS OF HOW WELL MAINTAINED. AT AGE 63 I HAVE OWNED MANY CARS IN MY LIFETIME & NONE EVER HAD SUCH A FAILURE. I AM ORIGINAL OWNER OF THIS VEHICLE PURCHASED NEW & WELL MAINTAINED. *TR
Mileage: 69,000
Compare 2004MERCEDES-BENZSLK320 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 2004 MERCEDES-BENZ SLK320 have?▼
The 2004 MERCEDES-BENZ SLK320 has 1 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2004 MERCEDES-BENZ SLK320?▼
The most-complained component for the 2004 MERCEDES-BENZ SLK320 is POWER TRAIN with 1 complaints. Other frequently reported areas include various components.
Is the 2004 MERCEDES-BENZ SLK320 safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.