Total Complaints
2 filings
MERCEDES-BENZ SL400 · model year
2015 MERCEDES-BENZ SL400
2 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2015MERCEDES-BENZSL400 carries 2 consumer safety complaints 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 2015 SL400 is wheels with 2 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 2015 SL400. 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.
2
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 |
|---|---|
| WHEELS | 2 |
Recent Complaints
20210802WHEELS
Multiple wheel rims (4) have cracked while driving under normal driving conditions. The last wheel rim crack occurred while on the highway leading to a flat tire upon arriving at destination. The rim was found cracked in two places.
20201214WHEELS
MY SL400 SEEMED TO HAVE A SLOW LEAK SINCE I BOUGHT IT, PARTICULARLY ON ONE TIRE. FINALLY WHILE OUT FOR A DRIVE THE TIRE DRAMATICALLY LOST TIRE PRESSURE AND IT LED ME TO GET SERVICE, WHERE I FOUND THAT THE RIM WAS CRACKED. I HAD THE RIM REPLACED FOR OVER USD$1000 IN OCTOBER. THEN IN DECEMBER, SAME SYMPTOM, SLOW LEAK, THEN DRAMATIC LOSS OF PRESSURE. CAR WAS TAKEN TO DEALERSHIP FOR SERVICE AND THEY FOUND THE SAME SYMPTOM, CRACKED RIM, AND INSPECTED THE OTHERS AND FOUND ANOTHER. THREE (3) CRACKED RIMS IN LESS THAN 3 MONTHS. I MAY ADD THAT THE CHANGE FROM SLOW LEAK TO DRASTIC LOSS COMES QUICKLY. I AM UNCOMFORTABLE FOR THE SAFETY OF MY VEHICLE. THE DEALER KNEW TO INSPECT THE OTHER WHEELS. EACH OF THESE RIMS COSTS MORE THAN USD$1000, AND THE DEALER TRIES TO PUSH A "TIRE & RIM WARRANTY". THE CAR HAS BEEN DRIVEN LIGHTLY BY ME AND LESS THAN 3000 MILES PER YEAR FOR THE LAST 2 YEARS. TO HAVE SUCH DRAMATIC FAILURES LEADS ME TO BELIEVE THAT THIS IS A DESIGN OR MANUFACTURING DEFICIENCY, AND CAUSE FOR
Mileage: 48,000
Compare 2015MERCEDES-BENZSL400 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 2015 MERCEDES-BENZ SL400 have?▼
The 2015 MERCEDES-BENZ SL400 has 2 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2015 MERCEDES-BENZ SL400?▼
The most-complained component for the 2015 MERCEDES-BENZ SL400 is WHEELS with 2 complaints. Other frequently reported areas include various components.
Is the 2015 MERCEDES-BENZ SL400 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.