← New search

2008 Nissan Frontier

Owner reports · Recalls · Investigations

More warning signs than most Frontier years

Owner complaints for the 2008 Nissan Frontier are substantially higher than the model-year median of 64.

About this comparison →

When problems were reported

Mileage at the reported incident

108 reports with mileage · 28 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 54 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 26 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 21 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports2 fire reports3 injury reports

Power Train complaints

54 reports
Clear category filter
86,000 miles · Sep 26, 2022
Engine And Engine CoolingPower Train

The contact owns a 2008 Nissan Frontier. The contact stated that while driving at speeds over 40 MPH, the vehicle would shake and vibrate. The vehicle was taken to the local mechanic who diagnosed that the radiator fluid had leaked into the transmission causing severe damage to the transmission. The contact was informed that the…

Read full complaint

The contact owns a 2008 Nissan Frontier. The contact stated that while driving at speeds over 40 MPH, the vehicle would shake and vibrate. The vehicle was taken to the local mechanic who diagnosed that the radiator fluid had leaked into the transmission causing severe damage to the transmission. The contact was informed that the transmission and radiator needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure but no assistance was offered. The failure mileage was 86,000.

NHTSA ODI #11486366

Mileage unknown · Jul 23, 2022
Power Train

The transmission cooler integrated into the radiator failed damaging the transmission by cross contamination of fluids. Loss of power on a narrow country mountain road was not safe. I learned that this problem is very common. I feel that Nissan should have replaced the radiator before thousands in transmission damage occurre…

Read full complaint

The transmission cooler integrated into the radiator failed damaging the transmission by cross contamination of fluids. Loss of power on a narrow country mountain road was not safe. I learned that this problem is very common. I feel that Nissan should have replaced the radiator before thousands in transmission damage occurred.

NHTSA ODI #11475452

Mileage unknown · Jul 19, 2022
EnginePower Train

Transmission fluid cooler integrated in the radiator that allowed engine coolant to mix with and contaminate the automatic transmission fluid causing damage to the transmission. Radiator had to be replaced along with flushing out of the trans fluid at a service station costing a few thousand of dollars. Months later the check en…

Read full complaint

Transmission fluid cooler integrated in the radiator that allowed engine coolant to mix with and contaminate the automatic transmission fluid causing damage to the transmission. Radiator had to be replaced along with flushing out of the trans fluid at a service station costing a few thousand of dollars. Months later the check engine light went on and found out that the transmission is slipping caused by the fluid contamination.

NHTSA ODI #11474744

130,138 miles · Jan 12, 2021
Power Train

TRANSMISSION FAILURE DUE TO COOLANT IN TRANS OIL CONTAMINATING TRANS COMPONENTS. TOTAL TRANS REBUILD/REPLACE RADIATOR AND TRANS COOLER. 130K MILES ON VEHICLE - LOW MILES FOR A 2008 FRONTIER. THE VEHICLE SHUDDERED, HESITATED, WOULD NOT PICK UP SPEED AS IT SHOULD, WAS HAVING DIFFICULTY SHIFTING THRU GEARS AS IT TRANSITIONED FROM…

Read full complaint

TRANSMISSION FAILURE DUE TO COOLANT IN TRANS OIL CONTAMINATING TRANS COMPONENTS. TOTAL TRANS REBUILD/REPLACE RADIATOR AND TRANS COOLER. 130K MILES ON VEHICLE - LOW MILES FOR A 2008 FRONTIER. THE VEHICLE SHUDDERED, HESITATED, WOULD NOT PICK UP SPEED AS IT SHOULD, WAS HAVING DIFFICULTY SHIFTING THRU GEARS AS IT TRANSITIONED FROM STOP TO MOVING, TYPICALLY AROUND 30-40 MPH UNDER LOAD (ACCELERATING). WE HAVE SINCE FOUND OUT THIS IS A KNOWN PROBLEM. EXPENSIVE REPAIR!

NHTSA ODI #11387773

180,000 miles · Aug 10, 2020
EngineFuel/propulsion SystemPower Train

DRIVING ON STREET TRUCK BEGAN TO SHAKE AND VIBRATE I LOSS POWER AND CAR COULDN'T SHIFT INTO GEAR IT SEEMED I PULLED OVER AND STOPPED AND SHUT OFF. CAR I STARTED IT BEGAN TO DRIVE AND IT WUDNT GO OVER 30MPH I STOPPED AND NOTICED LEAKING UNDER THE TRUCK TOWARDS THE ENGINE AND WHEN I PRESSED ON GAS IT WOULDN'T GO STILL SO I STOPPE…

Read full complaint

DRIVING ON STREET TRUCK BEGAN TO SHAKE AND VIBRATE I LOSS POWER AND CAR COULDN'T SHIFT INTO GEAR IT SEEMED I PULLED OVER AND STOPPED AND SHUT OFF. CAR I STARTED IT BEGAN TO DRIVE AND IT WUDNT GO OVER 30MPH I STOPPED AND NOTICED LEAKING UNDER THE TRUCK TOWARDS THE ENGINE AND WHEN I PRESSED ON GAS IT WOULDN'T GO STILL SO I STOPPED AND GOT TOWED

NHTSA ODI #11348447

98,800 miles · Aug 8, 2020
Power Train

FIRST LONG TRIP SINCE I BOUGHT THE USED TRUCK, A TRIP TO OAKRIDGE, 90 MILE ROUND TRIP FROM HOME. THE TRUCK MADE IT BACK TO OUR DRIVEWAY, THEN WHEN I PUT ON THE BREAK FOR MY HUSBAND TO GET OUT, IT WOULD NOT MOVE AND ALL THE DASH LIGHTS CAME ON. I COULDN'T BUDGE THE TRUCK. IT WAS LOCKED UP. COULDN'T MOVE THE STICK. THE ENGINE QUIT…

Read full complaint

FIRST LONG TRIP SINCE I BOUGHT THE USED TRUCK, A TRIP TO OAKRIDGE, 90 MILE ROUND TRIP FROM HOME. THE TRUCK MADE IT BACK TO OUR DRIVEWAY, THEN WHEN I PUT ON THE BREAK FOR MY HUSBAND TO GET OUT, IT WOULD NOT MOVE AND ALL THE DASH LIGHTS CAME ON. I COULDN'T BUDGE THE TRUCK. IT WAS LOCKED UP. COULDN'T MOVE THE STICK. THE ENGINE QUIT. FORCED IT INTO PARK AND TRIED TO RESTART, BUT NOT A SOUND. THE NEIGHBOR CAME OVER WITH HIS CODE READER. IT SAID P1000. BATTERY CHECKED GOOD, GOT A NEW ONE ANYWAY BECAUSE ITS AGE. GROUNDS WERE GOOD, BUT CLEANED ANYWAY. HAD IT TOWED TO DEALER. THEY PUT A NEW TRANSMISSION IN.

NHTSA ODI #11344042

160,000 miles · May 22, 2020
EnginePower TrainUnknown Or Other

THE ANTIFREEZE AND TRANSMISSION FLUID GOT MIXED TOGETHER IN MY TRUCK AND I AM NOW TOLD THAT THE MANUFACTURER KNEW THAT THE TRUCK WOULD AT LEAST GIVE ME 100,000 MILES BEFORE THAT WOULD ACTUALLY HAPPEN. *TR

NHTSA ODI #11325611

80,969 miles · Apr 1, 2020
Power Train

RADIATOR THAT CONTROLS THE TRANSMISSION COOLANT LET GO CAUSING THE TRANSMISSION COOLANT TO MIX WITH THE ENGINE COOLANT. I HAD THE TRANSMISSION REPAIRED AT NEW RIVER NISSAN BACK IN 2018. BEFORE I HAD NISSAN REPAIR IT I HAD TAKEN IT TO A TRANSMISSION SHOP WHERE IT WAS FLUSHED OUT AND A SMALL RADIATOR ADDED TO THE TRUCK BECAUSE OF…

Read full complaint

RADIATOR THAT CONTROLS THE TRANSMISSION COOLANT LET GO CAUSING THE TRANSMISSION COOLANT TO MIX WITH THE ENGINE COOLANT. I HAD THE TRANSMISSION REPAIRED AT NEW RIVER NISSAN BACK IN 2018. BEFORE I HAD NISSAN REPAIR IT I HAD TAKEN IT TO A TRANSMISSION SHOP WHERE IT WAS FLUSHED OUT AND A SMALL RADIATOR ADDED TO THE TRUCK BECAUSE OF THE RADIATOR GOING BAD . THE TRUCK HAD LESS THAN 80,000 MILES ON IT AND LESS THAN A 9 YEARS. AS THE RECALL WAS ADDED TO THAT AFTER ALL THE PROBLEMS FROM THE RADIATOR. I FILL LIKE I SHOULD BE REIMBURSED FOR EVERYTHING THAT I PAID OUT WHICH WAS ABOUT 3500.00 TOTAL. BUT NOW IT'S STILL MIXING COOLANT AFTER BEING SERVICED BY A NISSAN DEALER.

NHTSA ODI #11319973

136,911 miles · Oct 13, 2019
Electrical SystemElectronic Stability Control (esc)Power Train

I WAS DRIVING MY VEHICLE IN A PARKING LOT, BUT IT SEEMED LIKE IT WASN'T GETTING POWER. SO, I SHUT IT OFF AND WHEN I TRIED STARTING IT AGAIN THE FANS AND LIGHTS CAME ON BUT NOTHING ELSE. I TOOK IT TO FIRESTONE AND THEY SAID IT WAS THE STARTER. THEY REPLACED THE STARTER AND THAT DIDN'T FIX THE PROBLEM. THEY CHANGED THE ATECU FUS…

Read full complaint

I WAS DRIVING MY VEHICLE IN A PARKING LOT, BUT IT SEEMED LIKE IT WASN'T GETTING POWER. SO, I SHUT IT OFF AND WHEN I TRIED STARTING IT AGAIN THE FANS AND LIGHTS CAME ON BUT NOTHING ELSE. I TOOK IT TO FIRESTONE AND THEY SAID IT WAS THE STARTER. THEY REPLACED THE STARTER AND THAT DIDN'T FIX THE PROBLEM. THEY CHANGED THE ATECU FUSE. IT STARTED AND RAN FOR THREE MINUTES AND THEN DIED AGAIN. THEN I TOOK IT TO AN ELECTRICAL SHOP. THEY COULDN'T FIND ANYTHING WRONG. THEN I TOOK IT TO THE NISSAN DEALER AND THEY SAID IT WAS THE BRAIN ECM. THEY FIXED THAT AND IT STILL WOULDN'T START THE CAR. THEN THEY SAID IT WAS THE ECU AND TRANSMISSION. THEY SAID THE TRANSMISSION WAS NO GOOD DUE TO CROSS CONTAMINATION (RADIATOR FLUID INTO THE TRANSMISSION). THIS IS A NISSAN DEFECTIVE RADIATOR AND THEY CHARGED $5500 FOR A MISTAKE THAT WASN'T MY FAULT.

NHTSA ODI #11268170

136,911 miles · Oct 13, 2019
Electrical SystemElectronic Stability Control (esc)Power Train

I WAS DRIVING MY VEHICLE BUT IT SEEM LIKE IT WASN'T GETTING POWER. I SHUT IT OFF AND THEN IT WOULD NOT START. ADD THE STARTER REPLACED STILL AND START THE ATE UP FUSE WAS BLOWN.TICKET TO ELECTRICAL SHOP THEY COULD NOT FIND ANYTHING WRONG WITH IT. TOOK IT TO THE DEALER THEY SAID IT WAS THE BRAIN ECU AND THEN THEY SAID THAT IT WAS…

Read full complaint

I WAS DRIVING MY VEHICLE BUT IT SEEM LIKE IT WASN'T GETTING POWER. I SHUT IT OFF AND THEN IT WOULD NOT START. ADD THE STARTER REPLACED STILL AND START THE ATE UP FUSE WAS BLOWN.TICKET TO ELECTRICAL SHOP THEY COULD NOT FIND ANYTHING WRONG WITH IT. TOOK IT TO THE DEALER THEY SAID IT WAS THE BRAIN ECU AND THEN THEY SAID THAT IT WAS THE BRAIN AND THE TRANSMISSION AND THE TRANSMISSION WAS NO GOOD COST $5500 TO FIX

NHTSA ODI #11268165

Official recalls

5

23V067000 · Air Bags:frontal

Feb 10, 2023

Nissan North America, Inc. (Nissan) is recalling certain 2008-2011 Titan, Frontier, Xterra, Pathfinder, Armada, and 2008-2009 Quest vehicles. The resin emblem on the driver's air bag cover may develop cracks and detach during air bag deployment.

Consequence & remedy

Consequence: A detached emblem can become a projectile during air bag deployment, increasing the risk of injury to vehicle occupants.

Remedy: Dealers will replace the driver’s airbag cover. Owner letters were mailed December 8, 2023. Owners may contact Nissan's customer service at 1-800-867-7669. Nissan's number for this recall are PC944, PC945, and PC946.

10V401000 · Equipment:electrical:navigational System(global Positioning System)

Sep 10, 2010

NISSAN IS RECALLING CERTAIN VEHICLES THAT WERE EQUIPPED WITH A GARMIN NUVI MODEL 750 NAVIGATION SYSTEM. THE BATTERIES CONTAINED IN THE AFFECTED GPS UNITS CAN OVERHEAT.

Consequence & remedy

Consequence: OVERHEATED BATTERIES COULD RESULT IN A FIRE.

Remedy: NISSAN WILL NOTIFY OWNERS AND THE REPAIRS WILL BE PERFORMED BY GARMIN TECHNICIANS BY REPLACING THE BATTERY AND INSERTING A SPACER ON TOP OF THE BATTERY FREE OF CHARGE. THE SAFETY RECALL BEGAN ON SEPTEMBER 16, 2010. OWNERS MAY CONTACT GARMIN DIRECTLY AT 1-866-957-1981 OR 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.

08V045000 · Equipment:other:labels

Jan 25, 2008

NISSAN IS RECALLING 5,523 MY 2008 TITAN, FRONTIER AND XTERRA VEHICLES FOR FAILING TO COMPLY TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, 'TIRE SELECTION AND RIMS FOR MOTOR VEHICLES.' THE TIRE PLACARD LISTS AN INCORRECT VEHICLE CAPACITY WEIGHT.

Consequence & remedy

Consequence: THIS STANDARD SPECIFIES REQUIREMENTS FOR TIRE SELECTION TO PREVENT OVERLOADING.

Remedy: NISSAN WILL MAIL A CORRECT TIRE PLACARD AND INSTALLATION INSTRUCTIONS TO OWNERS OF THE AFFECTED VEHICLES. THE RECALL BEGAN ON FEBRUARY 25, 2008. 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

1

DP12004 · 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.