INFINITI Q45 · model year

1999 INFINITI Q45

10 NHTSA complaints, 3 crash reports for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 1999INFINITIQ45 carries 10 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 3 crashes, 0 fires, 1 injury, 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 1999 Q45 is tires with 3 filings, followed by wheels (2) and structure:body (1). 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 1999 Q45. 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.

10
Complaints
3
Crashes
0
Fires
1
Injuries
0
Deaths

Total Complaints

10 filings

Crashes Reported

3 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
TIRES3
WHEELS2
STRUCTURE:BODY1
VEHICLE SPEED CONTROL1
STRUCTURE:BODY:HOOD:HINGE AND ATTACHMENTS1
SUSPENSION1
STEERING1

Recent Complaints

20140409CrashSUSPENSION

LEFT FRONT STRUT SPRING BROKE WHILE IN TRAFFIC, SENDING BROKEN SPRING END INTO TIRE RIPPING THE ENTIRE SIDEWALL OF THE TIRE OUT. BLOWOUT CAUSED LOSS OF STEERING WHILE IN THE PROCESS SENT VEHICLE INTO ONCOMING TRAFFIC. *TR

Mileage: 114,000

20140409CrashSTEERING

LEFT FRONT STRUT SPRING BROKE WHILE IN TRAFFIC, SENDING BROKEN SPRING END INTO TIRE RIPPING THE ENTIRE SIDEWALL OF THE TIRE OUT. BLOWOUT CAUSED LOSS OF STEERING WHILE IN THE PROCESS SENT VEHICLE INTO ONCOMING TRAFFIC. *TR

Mileage: 114,000

20070508STRUCTURE:BODY:HOOD:HINGE AND ATTACHMENTS

WHILE CHECKING THE OIL IN THE 1999 Q45 INFINITI THE HOOD SUDDENLY FELL AND SLAMMED CLOSED. THIS HAPPENED IN JANUARY 2007 ,AND AGAIN MARCH 2007. ALL THREE TIMES I HAD TURNED AWAY MOMENTARILY AND WAS NOT INJURED. SINCE THE EXPERIENCE IN APRIL I NOW CARRY A PROP STICK AS A PRECAUTION. THE PROBLEM APPEARED INTERMITTENT AND DEPEND ON THE AMBIENT TEMPERATURE. THE COOLER IT WAS THE MORE LIKELY IT WOULD HAPPEN. SINCE THIS FIRST OCCURRENCE I HAVE SEARCHED FOR AFTER MARKET PARTS TO REPLACE THE LIFT SUPPORTS, BUT WAS UNABLE TO FIND ANY RESOURCE. THE AFTERMARKET PARTS WERE ONLY AVAILABLE FOR Q45 HOODS UP TO AND INCLUDING 1996 MODELS. I DID NOT KNOW IF DEALER PARTS WERE AVAILABLE BECAUSE MY SEARCHES HAVE NOT BEEN ABLE TO FIND A DEALER SOURCE FOR THAT PARTICULAR PART. I BELIEVE THIS WAS A MAJOR SAFETY PROBLEM THAT COULD LEAD TO SERIOUS INJURY OR DEATH IF A HOOD SLAMMED DOWN ON SOMEONE WHILE WORKING UNDER THE HOOD. A TECHNICAL SERVICE BULLETIN (TSB) WOULD ALERT ALL OWNERS OF THIS AUTOM

Mileage: 127,000

20060802TIRES

DT*: THE CONTACT STATED THE DRIVER'S SIDE REAR TIRE BLEW OUT WHILE DRIVING ON THE FREEWAY AT 20 MPH. THE CONTACT STATED THE TIRES WERE MAINTAINED WELL AT 35PSI. THERE WERE NO PROBLEMS WITH THE STEERING PRIOR TO THE INCIDENT.

Mileage: 78,650

20060110WHEELS

1999 INFINITY Q-45 WHEELS HAVE A CASTING DEFECT THAT DEVELOPS CRACKS WHEN THE VEHICLE IS DRIVEN. *TS THE WHEELS ARE THE SAME AS THE 2000 Q45 WHICH WAS RECALLED (03V-098). THE CONSUMER CONTACTED THE MANUFACTURER BUT SINCE THE VEHICLE WAS OVER 100000 MILES THEY REFUSED TO PROVIDE ASSISTANCE. *NM

20050907CrashTIRES

MY CAR A 1999 INFINITI Q45 HAS 4 CONTINENTAL TIRES. THESE WERE PURCHASED LAST YEAR AND HAS BEEN USED FOR ABOUT 6000 MILES. ON TUESDAY AUGUST 30 THE RIGHT REAR TIRE BLEW OUT CAUSING THE VEHICLE TO SLIDE ON THE RIGHT SIDE AND EVENTUALLY OVERTURN. IS IT NORMAL WITH A STEEL BELTED RADIAL FOR THE THREAD SURFACE TO COME COMPLETELY OFF THE SIDEWALL. THE AFFECTED TIRE IS IN 3 PIECES WITH THE WALLS ON THE RIM AND THE TREAD COMPLETELY CUT OFF BUT STILL IN A CIRCLE. *NM

20050504WHEELS

CAR HAS RECALLED WHEELS, BUT CAR ITSELF IN NOT ON RECALL LIST. MANUFACTURER REFUSED TO REPLACE WHEELS.*AK

20020917VEHICLE SPEED CONTROL

CONSUMER STATED THAT THE GAS PEDAL WOULD NOT ENGAGE READILY, WHEN PRESSING THE GAS PEDAL FROM A STOPPED POSITION, THE VEHICLE WOULD NOT MOVE, THEN MORE FORCE WOULD BE USED ON THE GAS PEDAL AND VEHICLE WOULD LURCH FORWARD, THE DEALER CLEANED THE THROTTLE CHAMBER. *SLC

20020731TIRES

A SET OF FOUR FALCON TIRES, (235/45HR17 ZIEX), WERE PURCHASED BY CONSUMER ON SEPT 27,2001, TIRES WERE PUT ON AND BALANCED. CONSUMER WENT BACK TO MAECHANIC BECAUSE TIRES WERE STILL OUT OF BALANCE. CONSUMER WAS INFORMED TO HAVE THE ALIGNMENT CHECKED. DOING SO THE TIRES WERE STILL NOT BALANCED. CONSUMER TOOK VEHICLE TO HAVE ANOTHER TIRE SERVICE BALANCE WITH A HIGH SPEED BALANCER AND INITIALLY THE TIRES WERE BETTER FOR FOUR MONTHS WHEN THEY GOT PROGRESSIVELY WORSE. TAKING THE VEHICLE BACK TO HAVE THEM BALANCED AGAIN, CONSUMER WAS INFORMED THEY WERE BADLY CUPPED TO BE PROPERLY BALANCED. THE TIRES HAVE IMPROPER WEAR PATTERN DUE TO MIS ALIGNMENT OR RUNNING THEM AGAINST THE RECOMMENDED ROTATION PATTERN. CONSUMER IS WILLING TO TRY A NEW SET OF FALCONS OR A REFUND OF MONIES PAID. *JG

20000706STRUCTURE:BODY

THE PAINT SCRATCHES AND FLAKES OFF SO EASILY AND HAS TO BE TOUCHED UP REPEATEDLY. NLM

Compare 1999INFINITIQ45 to Similar Vehicles

NHTSA Investigations

View all investigations

Frequently Asked Questions

How many complaints does the 1999 INFINITI Q45 have?
The 1999 INFINITI Q45 has 10 NHTSA complaints, 3 crashes, 0 fires, 1 injuries, and 0 deaths reported.
What are the most common problems with the 1999 INFINITI Q45?
The most-complained component for the 1999 INFINITI Q45 is TIRES with 3 complaints. Other frequently reported areas include WHEELS and STRUCTURE:BODY.
Is the 1999 INFINITI Q45 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.