Total Complaints
1 filings
INTERNATIONAL 9900I · model year
1 NHTSA complaints, and 3 active recalls for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2006INTERNATIONAL9900I 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 2006 9900I is suspension:rear:springs:leaf spring assembly:hanger/bracket 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. This model year has 3 active recall campaigns, which means the manufacturer is obligated to remedy the covered defect at no charge for the life of the vehicle — the full NHTSA campaign numbers are listed below.
NHTSA currently has 22 investigation files overlapping the 2006 9900I. 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 |
|---|---|
| SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:HANGER/BRACKET | 1 |
ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
ON CERTAIN 4X2 AND 6X4 HEAVY DUTY TRUCKS, THE POSITIVE BATTERY CABLE BETWEEN THE BATTERIES AND THE STARTER MAY RUB AGAINST AN ELECTRICAL GROUND CABLE BETWEEN THE STARTER AND FRAME RAIL.
EXTERIOR LIGHTING:BACK UP LIGHTS
Navistar, Inc. (Navistar) is recalling certain 2000-2003 International 8100, 2001-2003 International 9100i, 2001-2007 International 9400i, 2001-2010 International 9200i, 2002-2007, 2009 International 8500, 2003-2007, 2013 International 9900i, 2003-2018 International 8600, 2004, 2007 International 99
ENGINE AND ENGINE COOLING
NAVISTAR IS RECALLING CERTAIN MODEL YEAR 2003 THROUGH 2008 HEAVY TRUCKS MANUFACTURED BETWEEN APRIL 1, 2003 AND DECEMBER 21, 2007, EQUIPPED WITH CATERPILLAR C15 ENGINES. THE VARIABLE VALVE ACTUATION (VVA) OIL LINE MAY WEAR AGAINST THE P-CLIPS RETAINING THE OIL LINE, CAUSING AN OIL LEAK.
SPRING HANGERS ON OUR INTERNATIONAL 9900I TRUCKS, ON THE REAR DRIVE AXLES HAVE BEEN CRACKING AND BREAKING INTO TWO PIECES. WE HAVE HAD 2 OR 3 SO FAR THAT HAVE BROKEN. IF THEY ARE NOT CAUGHT IN TIME THE AXLES COULD MOVE OUT OF ALIGNMENT AND CAUSE THE TRUCK TO DOG WALK OUT OF THEIR LANE OF TRAVEL. *TR
Mileage: 345,000
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.