Total Complaints
1 filings
INFINITI M · model year
1 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2009INFINITIM 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 2009 M 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 7 investigation files overlapping the 2009 M. 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.
Total Complaints
1 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| POWER TRAIN | 1 |
I RECENTLY BOUGHT A 2009 INFINITI M35. MY VEHICLE AND PROBABLY MANY OTHER 2009 INFINITIS WITH THE 7-SPEED TRANSMISSION HAS THE FOLLOWING ISSUES: 1) HARSH DOWNSHIFTS: THE VEHICLE SUDDENLY DOWNSHIFTS AND THIS ACTION BRAKES THE VEHICLE SIGNIFICANTLY WITHOUT THE DRIVER'S WILL. IF THERE IS ANOTHER VEHICLE FOLLOWING CLOSELY IT MIGHT CRASH THE INFINITI FROM BEHIND. 2) LAG OF POWER: SOMETIMES THE CAR IS "SEARCHING" FOR THE RIGHT GEAR, RESULTING IN A LAG OF POWER. THIS IS VERY DANGEROUS ESPECIALLY WHILE MERGING INTO HIGHWAYS SINCE THE CAR SOMETIMES DELAYS/REFUSES TO ACCELERATE. 3) DOWNSHIFTS AT WRONG TIME: I WILL DESCRIBE THIS ISSUE USING AN EXAMPLE. ASSUME YOU MAKE A FULL STOP AT A STOP SIGN. THE CAR STILL HAS 2ND OR 3RD GEAR EVEN IF THE CAR HAS STOPPED COMPLETELY. WHEN YOU BEGIN ACCELERATING THE CAR DOWNSHIFTS TO 1ST GEAR, WHICH PUSHES THE CAR FORWARD IN A VERY HARSH WAY. VERY DANGEROUS IN CITY DRIVING. (IMAGINE WHAT HAPPENS WHEN YOU DOWNSHIFT FORM 3RD OR 2ND GEAR TO 1ST GEAR WHI
Complete loss of motive power due to engine failure
Occupant Classification System Failure
Improper Frontal Air Bag Deployment
Steering column separation
Collision Mitigation System Malfunction
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.