IllustrationTHE ACCELERATOR STARTED NOT SWITCHING GEARS AS I WAS MERGING ONTO THE FREEWAY. THEN, THE TRANSMISSION GAVE OUT. THE FLUID FROM THE TRANSMISSION LEAKED INTO THE RADIATOR AND BOTH NEED TO BE REPLACED. IT IS ESTIMATED TO COST $4,000 TO GET FIXED.
2006 Nissan Xterra
Owner reports · Recalls · Investigations
More warning signs than most Xterra years
Owner complaints for the 2006 Nissan Xterra are substantially higher than the model-year median of 78.
About this comparison →How this year compares
Owner complaints by model year
Compare all Xterra years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
380–25K
13625–50K
14750–75K
14775–100K
191100–150K
61150K+
720 reports with mileage · 60 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Power Train. Review the 268 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 237 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 106 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
12 crash reports3 fire reports11 injury reports
Engine complaints
104 reportsTHE FIRST INCIDENT WAS A COUPLE MONTHS AGO WHEN MY CAR JUST DECIDED TO STOP IN TRAFFIC ALL THE SUDDEN. JUST SHUT DOWN. THEN YESTERDAY I WAS DRIVING TO WORK AND A CAR IN FRONT OF ME DECIDED TO SLOW DOWN. WHEN I HIT THE BREAKS TO SLOW DOWN THE CAR WOULD NOT ACCELERATE BACK UP IT DECREASED. I COULD NOT GET IT TO GO. I RESTARTED THE…
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THE FIRST INCIDENT WAS A COUPLE MONTHS AGO WHEN MY CAR JUST DECIDED TO STOP IN TRAFFIC ALL THE SUDDEN. JUST SHUT DOWN. THEN YESTERDAY I WAS DRIVING TO WORK AND A CAR IN FRONT OF ME DECIDED TO SLOW DOWN. WHEN I HIT THE BREAKS TO SLOW DOWN THE CAR WOULD NOT ACCELERATE BACK UP IT DECREASED. I COULD NOT GET IT TO GO. I RESTARTED THE CAR AND IT TURNED ON AND WENT AGAIN. I LOOKED AT THIS WEBSITE AND SAW ALL THE COMPLAINTS.I HAVE HAD ALL THE SAME ISSUES WITH STALLING, NOT STARTING, AND NO ACCELERATION. I TOOK IT TO A TRANSMISSION SHOP AND THEY COULD NOT DETECT ANYTHING WRONG AS NO CODES AND OF COURSE IT DID NOT DO IT FOR THEM WHEN THEY TEST DROVE IT. I TOOK MY CAR TO THE NISSAN DEALERSHIP SHOWED THEM THE PRINT OUT FROM THIS SITE AND TOLD THEM I AM HAVING ALL THOSE PROBLEMS WITHIN THE LAST COUPLE MONTHS. THEY TOLD ME SINCE MY VIN WAS NOT INCLUDED IN THE RECALL THEY BASICALLY COULD NOT HELP WITHOUT CHARGING ME $900 FOR A RADIATOR PLUS THE ENGINE CONTROL MODULE $78. I HAD TO PAY $100 JUST FOR THEM TO LOOK AT IT. THEY TOLD ME A WHOLE NEW TRANSMISSION WOULD BE $9000. THIS IS A HORRIBLE PROBLEM THIS VEHICLE IS HAVING AND IS VERY DANGEROUS FOR YOUR CAR TO JUST TURN OFF WHILE DRIVING. I HAVE A SMALL CHILD IN THE CAR WITH ME. VERY SCARY WOULD COULD HAPPEN. I DO NOT CARE WHAT THE MILEAGE IS ON THE VEHICLE. NISSAN NEEDS TO INCLUDE ALL XTERRA'S NO MATTER WHAT THE VIN IS FOR THE TIME FRAME! ALL THESE COMPLAINTS NEED ACTION. I LITTLE TO QUINKY DINK THEY ARE ALL HAPPENING NOW! NISSAN DEALERSHIP TOLD ME THEY WOULD RECOMMEND: ECM RELAY $78, RADIATOR $740, PLUS SOME OTHER MAINTENANCE STUFF. WHEN I WENT TO LEAVE AFTER HAVING THEM REPLACE THE. ECM I HAD A LOVELY LETTER STATING THEY DID A COMPLIMENTARY APPRAISAL OF MY VEHICLE. THEY DID EVERYTHING TO CONFIRM IT IS THE PROBLEM, BUT OFFERED NO HELP UNLESS I FORK OUT THE $$$$$.
I WAS DRIVING TO A LOCAL CITY POOL AND THE CAR APPEARED TO LOSE POWER. I RESTARTED THE CAR AND REACHED THE POOL. WHEN I WENT TO START THE CAR, IT WOULDNT START. THINKING IT MIGHT BE THE BATTERY, I HAD SOMEONE TRY TO JUMP START IT BUT NOTHING HAPPENED. HAD MY CAR TOWED TO A LOCAL MECHANIC THE FOLLOWING MORNING AND LEARNED THA…
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I WAS DRIVING TO A LOCAL CITY POOL AND THE CAR APPEARED TO LOSE POWER. I RESTARTED THE CAR AND REACHED THE POOL. WHEN I WENT TO START THE CAR, IT WOULDNT START. THINKING IT MIGHT BE THE BATTERY, I HAD SOMEONE TRY TO JUMP START IT BUT NOTHING HAPPENED. HAD MY CAR TOWED TO A LOCAL MECHANIC THE FOLLOWING MORNING AND LEARNED THAT THE TRANSMISSION WOULD NEED TO BE REPLACED AS THE RADIATOR FLUID HAD MIXED WITH THE TRANSMISSION FLUID DUE TO A FAULTY SENSOR. NOW I HAVE A PERFECTLY NICE VEHICLE THAT WONT RUN UNLESS I PAY TO HAVE THE TRANSMISSION AND RADIATOR REPLACED. I JUST BOUGHT IT IN FEBRUARY 2014. IT IS NOT COVERED UNDER THE CLASS ACTION SUIT BECAUSE IT HAS 144,000 MILES ON IT.
CRACKED RADIATOR HOSE CAUSED COOLANT TO MIX WITH TRANSMISSION FLUID THEREBY RUINING THE TRANSMISSION. COST INCLUDED RADIATOR AND TRANSMISSION (USED) REPLACEMENT. THIS ISSUE WOULD HAVE BEEN PROACTIVELY REPAIRED / REPLACED THE RADIATOR PRIOR TO THE ISSUE OCCURRING HAD NISSAN NOTIFIED ME OF IT. INSTEAD, IT COST AN EXTRA $3500 T…
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CRACKED RADIATOR HOSE CAUSED COOLANT TO MIX WITH TRANSMISSION FLUID THEREBY RUINING THE TRANSMISSION. COST INCLUDED RADIATOR AND TRANSMISSION (USED) REPLACEMENT. THIS ISSUE WOULD HAVE BEEN PROACTIVELY REPAIRED / REPLACED THE RADIATOR PRIOR TO THE ISSUE OCCURRING HAD NISSAN NOTIFIED ME OF IT. INSTEAD, IT COST AN EXTRA $3500 TO REPLACE BOTH RADIATOR AND TRANSMISSION. A TOTALLY PREVENTABLE SITUATION, NEVER MIND THE POTENTIALLY HAZARDOUS SITUATION HAD THE TRANSMISSION FAILED AT HIGHWAY SPEEDS. NO EXCUSE FOR NISSAN.
WHILE DRIVING AND TRYING TO ENTER A MAJOR HIGHWAY AT ABOUT 40 MPH AND TRYING TO ACCELERATE, I HAD TO PULL OUT TO THE SHOULDER BECAUSE THE TRUCK WOULDN'T SHIFT TO A HIGHER GEAR...I HAD TO GET OUT OF THE HIGHWAY BECAUSE THE TRUCK WASN'T ABLE TO ACCELERATE AND REMAINED ON 1ST SHIFT STRUGGLING TO GET TO 2ND AND THEN 3RD....I GOT HOM…
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WHILE DRIVING AND TRYING TO ENTER A MAJOR HIGHWAY AT ABOUT 40 MPH AND TRYING TO ACCELERATE, I HAD TO PULL OUT TO THE SHOULDER BECAUSE THE TRUCK WOULDN'T SHIFT TO A HIGHER GEAR...I HAD TO GET OUT OF THE HIGHWAY BECAUSE THE TRUCK WASN'T ABLE TO ACCELERATE AND REMAINED ON 1ST SHIFT STRUGGLING TO GET TO 2ND AND THEN 3RD....I GOT HOME AND HEARD THE ENGINE OR RADIATOR MAKE BUBBLING NOISE....AFTER 3 OR 4 HOURS I OPENED THE RADIATOR AND SAW ALL SORTS OF GUNK LIKE BUBBLEGUM...IT WAS STILL WARM AND IT OOZED OUT FALLING ALL OVER MY DRIVEWAY...I PAYED A MECHANIC $300 TO CHANGE THE RADIATOR THINKING IT WAS THE PROBLEM ...ONLY TO FIND OUT IT WAS MUCH MORE AND MORE MONEY ALSO....I LOOKED FOR ANOTHER MECHANIC AND HE SAID IT WOULD COST $4000 TO FIX EVERYTHING... I'VE WASTED MORE THAN $3000 TRYING TO FIGURE OUT WHAT THE PROBLEM IS.. NOW THE MECHANIC SAYS THAT A NEW TRANSMISSION MODULE VALVE IS NEEDED ....HOW MANY MORE TRUCKS BREAKING DOWN OR COMPLAINTS UNTIL THIS ISSUE IS RESOLVED.... I WAS LUCKY THAT WHEN I WAS ON THE HIGHWAY NO CARS WERE COMING FULL SPEED...BECAUSE WITHOUT BEING ABLE TO ACCELERATE I WOULD OF CAUSED AN ACCIDENT AND GOTTEN KILLED...I LOVED MY TRUCK AND MISS RIDING IT...PLEASE LOOK INTO THIS... THANK YOU..
AS I CAME UP TO STOP AT A RED LIGHT, THE XTERRA BEGAN TO SHUDDER AND THE TACHOMETER STARTED RISING AND FALLING UNTIL I FINALLY STOPPED, THEN THE TACHOMETER DROPPED BELOW 500 RPM AND THE TRUCK TURNED OFF. RESTARTED IT FINE, BUT IT STALLED AGAIN. I QUICKLY FIGURED OUT THAT ALTHOUGH IT IS AN AUTOMATIC, I NEEDED TO DRIVE IT LIKE A M…
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AS I CAME UP TO STOP AT A RED LIGHT, THE XTERRA BEGAN TO SHUDDER AND THE TACHOMETER STARTED RISING AND FALLING UNTIL I FINALLY STOPPED, THEN THE TACHOMETER DROPPED BELOW 500 RPM AND THE TRUCK TURNED OFF. RESTARTED IT FINE, BUT IT STALLED AGAIN. I QUICKLY FIGURED OUT THAT ALTHOUGH IT IS AN AUTOMATIC, I NEEDED TO DRIVE IT LIKE A MANUAL. SO I PUT IT IN NEUTRAL, STARTED IT AGAIN, IT DID NOT STALL, THEN I REVVED THE ENGINE TO 2,000 RPM AND PUT IT INTO DRIVE. OFF I WENT, AND IT DID NOT DO IT AGAIN THAT DAY. HOWEVER, OVER THE NEXT MONTH IT BECAME A GROWING PROBLEM, UNTIL IT FINALLY WAS OCCURRING EVERY SINGLE TIME I STOPPED UNLESS I PUT IT IN NEUTRAL. I TOOK IT TO THE MECHANIC WHO SPENT 4 HOURS DIAGNOSING IT TO BE CERTAIN OF THE PROBLEM. WHICH THEY SAID WAS A FAILING TORQUE CONVERTOR AND PLATE. IT FAILED DUE TO COOLANT LEAKING INTO THE TRANSMISSION FROM A BROKEN HOUSING COMING OFF OF THE RADIATOR (APPARENTLY A VERY COMMON PROBLEM FOR WHICH NISSAN REFUSES TO TAKE RESPONSIBILITY). NOT HARD TO VERIFY THEIR FINDINGS DUE TO THE PRESENCE OF PINK MILKSHAKE LOOKING LIQUID IN THE RADIATOR. FINAL VERDICT, AT BEST IT NEEDS A NEW TORQUE CONVERTOR AND PLATE, BUT WITH THE AMOUNT OF EFFORT TO INSTALL THOSE AND UNKNOWN FURTHER DAMAGE FROM THE COOLANT LEAK, A NEW TRANSMISSION WAS RECOMMENDED.
TIMING CHAINS ISSUES. SPECIFICALLY TIMING CHAIN GUIDES AND TENSIONERS STOPPED FUNCTIONING. REPAIR COST $985. CRANKSHAFT POSITION SENSOR STOPPED FUNCTIONING. REPAIR COST $590. *TR
RADIATOR, WHICH WAS RECALLED AND I WAS NEVER NOTIFIED ABOUT, CRACKED LEAKING COOLANT INTO THE TRANSMISSION ULTIMATELY CAUSING THE TRANSMISSION TO FAIL. *TR
THE CAR SUDDENLY STALLED WITHOUT ANY WARNING. TOTAL LOSS OF ABILITY REGARDING STEERING AND BRAKING WAS ENCOUNTERED. THE IGNITION KEY LOCK SWITCH FUNCTIONS BECOME UNRESPONSIVE FOLLOWING THE STALLING ENGINE. MEANING THAT WHEN THE KEY WAS TURNED THE ENGINE WOULD TURN OVER BUT, THE ENGINE WOULD NOT REMAIN ON. *TR
DRIVER WAS HEADING AT APPROXIMATELY 45 MPH, AND ENGINE DIED. HAD TOWED TO NISSAN MECHANIC. THE ISSUE WAS DIAGNOSED AS A TIMING CHAIN FAILURE, WHICH LED TO CATASTROPHIC/UN-REPAIRABLE ENGINE FAILURE. NEEDED COMPLETE ENGINE REPLACEMENT. *TR
Official recalls
310V517000 · Engine And Engine Cooling
Oct 28, 2010
NISSAN IS RECALLING CERTAIN MODEL YEAR 2004-2006 ARMADA, TITAN, INFINITI QX56 AND MODEL YEAR 2005-2006 FRONTIER, PATHFINDER AND XTERRA VEHICLES. THE INTELLIGENT POWER DISTRIBUTION MODULE (IPDM) ASSEMBLY CONTAINS AN ENGINE CONTROL MODULE (ECM) RELAY THAT HAS A DIODE FOR ELECTRICAL CURRENT NOISE REDUCTION. THE ECM RELAY MAY ALLOW SILICON VAPOR TO FORM AND, OVER TIME, THE SILICON EVAPORATES FROM THE DIODE MOLDING WHICH CAUSES SILICON OXIDE TO DEVELOP ON THE ECM RELAY CONTACT DUE TO ARCING.
Consequence & remedy
Consequence: THIS COULD CAUSE ENGINE STALLING INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE ECM RELAY INSIDE THE IPDM ASSEMBLY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON DECEMBER 6, 2010. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
10V075000 · Fuel System, Gasoline:storage:auxillary Tank
Mar 3, 2010
NISSAN IS RECALLING CERTAIN MODEL YEAR 2006 AND MODEL YEAR 2008 FRONTIER, XTERRA AND PATHFINDER VEHICLES. THE MOLDED FUEL TANK SHELLS CAN DEFORM, CAUSING THE FUEL SENDER FLOAT ARM TO CONTACT AN EMBOSSMENT MOLDED INTO THE TANK SHELL CAUSING THE INSTRUMENT PANEL FUEL GAUGE TO SHOW THAT THE VEHICLE HAS APPROXIMATELY ONE QUARTER TANK WHEN THE FUEL TANK IS EMPTY.
Consequence & remedy
Consequence: THIS COULD CAUSE THE VEHICLE TO RUN OUT OF GAS AND STALL IN TRAFFIC, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE FUEL LEVEL SENDING UNIT INSIDE THE FUEL TANK WITH A NEW ONE THAT HAS A MODIFIED FLOAT ARM. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OR BEFORE MARCH 22, 2010. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
08V690000 · Air Bags:frontal
Dec 29, 2008
NISSAN IS RECALLING 242,720 MY 2005-2009 PATHFINDER, FRONTIER AND XTERRA VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA. IN THOSE AREAS OF THE COUNTRY WHICH USE HEAVY CONCENTRATIONS OF ROAD SALT IN THE WINTER, A MIXTURE OF SNOW/WATER AND SALT CAN ENTER INTO THE FRONT CRASH ZONE SENSOR (CZS) HOUSING. IF THIS OCCURS, THE CZS MAY INTERNALLY RUST RESULTING IN A SIGNAL INTERRUPTION. IF THIS HAPPENS, THE RED AIR BAG WARNING LIGHT WILL ILLUMINATE TO ALERT THE VEHICLE OPERATOR.
Consequence & remedy
Consequence: THIS ISSUE COULD RESULT IN THE NON-DEPLOYMENT OF THE DRIVER AND PASSENGER FRONT AIR BAGS IN A CRASH, INCREASING THE RISK OF PERSONAL INJURY.
Remedy: DEALERS WILL REPLACE THE FRONT CZS WITH A REDESIGNED SENSOR. THE RECALL BEGAN ON JANUARY 26, 2009. OWNERS IN THE OTHER STATES WILL RECEIVE EXTENDED WARRANTY COVERAGE FOR THE SENSOR TO 10 YEARS. THESE OWNERS WILL BE NOTIFIED OF THE WARRANTY EXTENSION BY MAIL AND WILL RECEIVE A STICKER TO PLACE IN THEIR WARRANTY BOOKLET EXPLAINING THE EXTENDED WARRANTY COVERAGE. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1DP12004 · Transmission Failures
Opened Jun 11, 2012 · Closed Oct 22, 2016
Status: closed (inferred from source dates) · Power Train; Power Train:automatic Transmission; Power Train:automatic Transmission:control Module (tcm/pcm/tecm); Power Train:automatic Transmission:cooling Unit And Lines; Power Train:automatic Transmission:torque Converter
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Additional source detail variants (5)
Power Train:automatic Transmission:control Module (tcm/pcm/tecm)
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train:automatic Transmission:cooling Unit And Lines
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train:automatic Transmission
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train:automatic Transmission:torque Converter
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.