← New search

2003 Toyota 4 Runner

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2003 Toyota 4 Runner do not stand out strongly from the model-year median of 96.5.

About this comparison →

When problems were reported

Mileage at the reported incident

89 reports with mileage · 79 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.

  • Engine And Engine Cooling. Review the 75 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Seats. Review the 17 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

1 crash reports0 fire reports8 injury reports

Engine And Engine Cooling complaints

75 reports
Clear category filter
Mileage unknown · Jun 10, 2005
Engine And Engine Cooling

EXHAUST SYSTEM EMITS A SULPHUR SMELL THAT COMES INTO THE SEATING AREA

NHTSA ODI #10124959

Mileage unknown · Feb 21, 2005
Engine And Engine Cooling

I BOUGHT A NEW TOYATO 4 RUNNER AND THE VEHICLE SMELL CONSTANTLY. I SPOKE WITH TOYOTA AND THEY ASK ME TO CHANGE MY GAS TYPE TO A MORE EXPENSIVE ONE. THIS IS RIDICULOUS THAT I HAVE TO BE DRIVING MY FAMILY AROUND IN A SMELLY TRUCK. HELP

NHTSA ODI #10111886

34,115 miles · Jan 25, 2005
Engine And Engine Cooling

AT CERTAIN TIMES I HAVE A SULFUR/EXHAUST SMELL THAT ENTERS THE VEHICLE. IT IS INTERMITTENT, I THOUGHT MAYBE IT WAS EXHAUST FROM VEHICLES IN FRONT OF ME EMITTING BAD FUMES, BUT IT HAS ALSO HAPPENED WHEN NO OTHER VEHICLES ARE AROUND ME. IT HASN'T LASTED LONG 30 SECONDS TO A MINUTE AND IT'S GONE. BUT WHEN THE SMELL COMES IT'S VERY …

Read full complaint

AT CERTAIN TIMES I HAVE A SULFUR/EXHAUST SMELL THAT ENTERS THE VEHICLE. IT IS INTERMITTENT, I THOUGHT MAYBE IT WAS EXHAUST FROM VEHICLES IN FRONT OF ME EMITTING BAD FUMES, BUT IT HAS ALSO HAPPENED WHEN NO OTHER VEHICLES ARE AROUND ME. IT HASN'T LASTED LONG 30 SECONDS TO A MINUTE AND IT'S GONE. BUT WHEN THE SMELL COMES IT'S VERY OVERPOWERING, MAKING ME WANT TO GAG AT TIMES. *NM

NHTSA ODI #10107881

Mileage unknown · Oct 18, 2004
Engine And Engine Cooling

MY HUSBAND PURCHASE A 2003 4 RUNNER FOR ME AND WHILE DRIVING I HAVE HAD A STRONG SMELL OF ROTTEN EGGS IN THE CAR WHICH HAS CAUSE HEADACHES;STOMACHACHES AS WELL AS BLUR OF VISION. IT NOT ONLY COMES THROUGH THE WINDOWS WHILE DOWN BUT ALSO THROUGH THE VENTSAND MORE SO WHILE MY AIR CONDITIONER IS ON . *AK

NHTSA ODI #10095938

Mileage unknown · Oct 11, 2004
Engine And Engine Cooling

I OWN A 2003 TOYOTA 4RUNNER AND HAVE BEEN EXPERIENCING THE SULFUR/ROTTEN EGG SMELL FOR SEVERAL MONTHS. IT IS INTERMITTENT AND SEEMS TO OCCUR MOST FREQUENTLY UPON ACCELERATION. THE SMELL CAN GET QUITE BAD AT TIMES, AND HAS CAUSED MY EYES TO BURN AND OTHER PASSENGERS TO FEEL NAUSEOUS. MY 3 YEAR OLD SON HAS COMPLAINED SEVERAL TI…

Read full complaint

I OWN A 2003 TOYOTA 4RUNNER AND HAVE BEEN EXPERIENCING THE SULFUR/ROTTEN EGG SMELL FOR SEVERAL MONTHS. IT IS INTERMITTENT AND SEEMS TO OCCUR MOST FREQUENTLY UPON ACCELERATION. THE SMELL CAN GET QUITE BAD AT TIMES, AND HAS CAUSED MY EYES TO BURN AND OTHER PASSENGERS TO FEEL NAUSEOUS. MY 3 YEAR OLD SON HAS COMPLAINED SEVERAL TIMES THAT IT MAKES HIS TUMMY HURT. TAKING IT IN TO TOYOTA HAS NOT HELPED - THEY STATE THAT TOYOTA IS AWARE OF THE PROBLEM AND IS TAKING A LOOK AT IT. HOPEFULLY THEY WILL LOOK QUICKER AND FIND A SOLUTION. I HAVE OWNED SEVERAL TOYOTAS (THIS IS MY SECOND 4RUNNER IN A ROW) AND HAVE ALWAYS FOUND THE CARS AND SERVICE TO BE EXCEPTIONAL. HOWEVER, THIS HAS SOURED ME ON MY WONDERFUL 4RUNNER AND I WILL MOST DEFINITELY LOOK AT OTHER SUVS - PERHAPS SOONER RATHER THAN LATER NOW. *NM

NHTSA ODI #10093942

500 miles · Oct 7, 2004
Engine And Engine Cooling

ROTTEN EGG SULFUR SMELL IN MY 2003 TOYOTA 4 RUNNER. VERY BAD WHEN ANY WINDOW IS DOWN, JUST BAD WHEN ALL WINDOWS ARE UP. DEALER SUGGESTED DIFFERENT GAS(DIDN'T WORK), AND REPLACED CATALYTIC CONVERTER (DIDN'T WORK). THIS PROBLEM IS GIVING ME AND MY FAMILY HEADACHES WHILE RIDING IN THE VEHICLE. *NM

NHTSA ODI #10093754

Mileage unknown · Sep 7, 2004
Engine And Engine Cooling

LTR FM CHRISTINE IDLAND (NJ) RE A PROBLEM WITH HER 2003 TOYOTA 4-RUNNER, IT EMITS A PUNGENT ODOR WHEN SHE PRESSES THE ACCELERATOR; REPLY ATTN DEREK DECOSMO/HADDON HEIGHTS OFFICE. *NM THE NJ OEP RAN TEST ON THE VEHICLE WHICH DETERMINED THAT WHEN THE CONSUMER ACCELERATED THE CARBON MONOXIDE LEVELS INSIDE THE VEHICLE BECAME ELEVA…

Read full complaint

LTR FM CHRISTINE IDLAND (NJ) RE A PROBLEM WITH HER 2003 TOYOTA 4-RUNNER, IT EMITS A PUNGENT ODOR WHEN SHE PRESSES THE ACCELERATOR; REPLY ATTN DEREK DECOSMO/HADDON HEIGHTS OFFICE. *NM THE NJ OEP RAN TEST ON THE VEHICLE WHICH DETERMINED THAT WHEN THE CONSUMER ACCELERATED THE CARBON MONOXIDE LEVELS INSIDE THE VEHICLE BECAME ELEVATED. THIS OCCURRED WHETHER THE WINDOWS WERE OPENED OR CLOSED. *NM

NHTSA ODI #10091444

1 miles · Jun 18, 2004
Engine And Engine CoolingInjury

ROTTEN EGG SULFUR SMELL WITH CARBON MONOXIDE (CO) IN THE CABIN IS MAKING PASSENGERS SICK! (POISONED) I JUST DID A LITTLE RESEARCH ON THIS PROBLEM AND HAVE LEARNED THAT 60 COMPLAINTS HAVE BEEN SUBMITTED TO THE NHTSA FOR THIS SULFUR SMELL. HOWEVER WHAT EVERYONE IS FOCUSING ON IS THE SMELL OF ROTTEN EGG. THIS IS DISGUSTING AND PO…

Read full complaint

ROTTEN EGG SULFUR SMELL WITH CARBON MONOXIDE (CO) IN THE CABIN IS MAKING PASSENGERS SICK! (POISONED) I JUST DID A LITTLE RESEARCH ON THIS PROBLEM AND HAVE LEARNED THAT 60 COMPLAINTS HAVE BEEN SUBMITTED TO THE NHTSA FOR THIS SULFUR SMELL. HOWEVER WHAT EVERYONE IS FOCUSING ON IS THE SMELL OF ROTTEN EGG. THIS IS DISGUSTING AND POTENTIALLY DANGEROUS BUT THAT IS IT IS NOT WHAT WILL KILL YOU. THE CARBON MONOXIDE(CO)IS THE REAL DANGER BECAUSE IT IS WITHOUT ODOR AND DEADLY IT IS ALSO GETTING INTO THE CAR BY THE SAME MEANS AS THE OBVIOUS EGG SMELL. I WAS SO CONCERNED THAT I CONTACTED A ENVIROMENTAL COMPANY WHO CAME FOR A RIDE ALONG IN MY 2003 SR5 4RUNNER. THIS RIDE PROVED TO ME THAT(CO)IS INDEED ENTERING THE CABIN AND ALARMED THE TECH WHO CAME ALONG WITH A (CO)TESTER. AT ONE POINT HE YELLED "CLOSE THE F@#%@%& REAR WINDOW". I SAW THE READINGS GO OFF THE CHARTS DEPENDING ON THE CONFIGURATION OF THE WINDOWS. I DID NOT PAY FOR THIS TEST AS THEY WERE BEING KIND ENOUGH TO JUST SEE IF I HAD ANY (CO)ENTERING THE CABIN. THIS WAS ENOUGH FOR ME! I HAVE SINCE CONTACTED TOYOTA CUSTOMER SERVICE AND I AM WAITING TO HEAR FROM THE REGIONAL REP FROM FL. ANOTHER OPTION FOR PEOPLE TO FIND OUT ON THEIR OWN IS TO GO TO THE HOME DEPOT AND BUY A (CO) TESTER. THIS CAN BE PLUGGED INTO THE 110 OUTLET IN THE GLOVE BOX. I DID AND I DO NOT DRIVE WITH THE REAR WINDOW DOWN AT ALL ANY LONGER AND HAVE POSTPONED TRIPS OF LONGER THAN 50 MILES TO REDUCE EXPOSER TO THIS HARMFUL CHEMICAL. THIS IS A SERIOUS PROBLEM THAT MAY BE CORRECTED BY CHANGING THE LOCATION OF THE TAIL PIPE TO VENT TO THE SIDE OF THE VEHICLE. I HOPE THIS WILL GET THE PEOPLE (NHTSA) WHO ARE SUPPOSED TO BE PROFESSIONALS THAT PROTECT US "TO WAKE UP." IF SOMEONE ELSE COULD DO A SIMILAR TEST IN THEIR STATE WE COULD HAVE MORE AMMUNITION TO FIGHT TOYOTA. I HAVE FOUND OUT THAT THE EPA COMPANY WOULD DO A COMPLETE TEST WITH REPORT AND ALL FOR AROUND $340.00. I AM GOING TO SEE IF THE SERVICE REP WOULD DO THIS BUT I DOUBT IT. *AK

NHTSA ODI #10078435

1 miles · Jun 18, 2004
Engine And Engine CoolingInjury

ROTTEN EGG (SULFUR) SMELL WITH CARBON MONOXIDE (CO) IN THE CABIN IS MAKING PASSENGERS SICK! (POISONED) I JUST DID A LITTLE RESEARCH ON THIS PROBLEM AND HAVE LEARNED THAT 60 COMPLAINTS HAVE BEEN SUBMITTED TO THE NHTSA FOR THIS SULFUR SMELL. HOWEVER WHAT EVERYONE IS FOCUSING ON IS THE SMELL OF ROTTEN EGG. THIS IS DISGUSTING AND …

Read full complaint

ROTTEN EGG (SULFUR) SMELL WITH CARBON MONOXIDE (CO) IN THE CABIN IS MAKING PASSENGERS SICK! (POISONED) I JUST DID A LITTLE RESEARCH ON THIS PROBLEM AND HAVE LEARNED THAT 60 COMPLAINTS HAVE BEEN SUBMITTED TO THE NHTSA FOR THIS SULFUR SMELL. HOWEVER WHAT EVERYONE IS FOCUSING ON IS THE SMELL OF ROTTEN EGG. THIS IS DISGUSTING AND POTENTIALLY DANGEROUS BUT THAT IS IT IS NOT WHAT WILL KILL YOU. THE CARBON MONOXIDE(CO)IS THE REAL DANGER BECAUSE IT IS WITHOUT ODOR AND DEADLY IT IS ALSO GETTING INTO THE CAR BY THE SAME MEANS AS THE OBVIOUS EGG SMELL. I WAS SO CONCERNED THAT I CONTACTED A ENVIROMENTAL COMPANY WHO CAME FOR A RIDE ALONG IN MY 2003 SR5 4RUNNER. THIS RIDE PROVED TO ME THAT(CO)IS INDEED ENTERING THE CABIN AND ALARMED THE TECH WHO CAME ALONG WITH A (CO)TESTER. AT ONE POINT HE YELLED "CLOSE THE F@#%@%& REAR WINDOW". I SAW THE READINGS GO OFF THE CHARTS DEPENDING ON THE CONFIGURATION OF THE WINDOWS. I DID NOT PAY FOR THIS TEST AS THEY WERE BEING KIND ENOUGH TO JUST SEE IF I HAD ANY (CO)ENTERING THE CABIN. THIS WAS ENOUGH FOR ME! I HAVE SINCE CONTACTED TOYOTA CUSTOMER SERVICE AND I AM WAITING TO HEAR FROM THE REGIONAL REP FROM FL. ANOTHER OPTION FOR PEOPLE TO FIND OUT ON THEIR OWN IS TO GO TO THE HOME DEPOT AND BUY A (CO) TESTER. THIS CAN BE PLUGGED INTO THE 110 OUTLET IN THE GLOVE BOX. I DID AND I DO NOT DRIVE WITH THE REAR WINDOW DOWN AT ALL ANY LONGER AND HAVE POSTPONED TRIPS OF LONGER THAN 50 MILES TO REDUCE EXPOSER TO THIS HARMFUL CHEMICAL. THIS IS A SERIOUS PROBLEM THAT MAY BE CORRECTED BY CHANGING THE LOCATION OF THE TAIL PIPE TO VENT TO THE SIDE OF THE VEHICLE. I HOPE THIS WILL GET THE PEOPLE (NHTSA) WHO ARE SUPPOSED TO BE PROFESSIONALS THAT PROTECT US "TO WAKE UP." IF SOMEONE ELSE COULD DO A SIMILAR TEST IN THEIR STATE WE COULD HAVE MORE AMMUNITION TO FIGHT TOYOTA. I HAVE FOUND OUT THAT THE EPA COMPANY WOULD DO A COMPLETE TEST WITH REPORT AND ALL FOR AROUND $340.00. I AM GOING TO SEE IF THE SERVICE REP WOULD DO THIS BUT I DOUBT IT. *AK

NHTSA ODI #10078432

35 miles · Jun 8, 2004
Engine And Engine Cooling

MY 2003 TOYOTA 4 RUNNER HAS AN EXTREMELY STRONG SMELL OF SULPHUR IN THE CABIN WHEN I DRIVE WITH THE WINDOWS OPEN. I HAVE REPORTED THIS 3 TIMES TO MY DEALER, AND ON THE THIRD TIME, THEY ACKNOWLEDGED THAT THE SMELL WAS FROM THE FUEL. I HAVE OWNED MANY CARS, AND NEVER EXPERIENCED SUCH A SMELL, AND I HAVE COMPARED TO OTHER 4RUNNE…

Read full complaint

MY 2003 TOYOTA 4 RUNNER HAS AN EXTREMELY STRONG SMELL OF SULPHUR IN THE CABIN WHEN I DRIVE WITH THE WINDOWS OPEN. I HAVE REPORTED THIS 3 TIMES TO MY DEALER, AND ON THE THIRD TIME, THEY ACKNOWLEDGED THAT THE SMELL WAS FROM THE FUEL. I HAVE OWNED MANY CARS, AND NEVER EXPERIENCED SUCH A SMELL, AND I HAVE COMPARED TO OTHER 4RUNNER OWNERS, ALL OF WHOM HAVE THE SAME SITUATION. THE SMELL IS IMMEDIATELY NOTICEABLE. *AK

NHTSA ODI #10074983

Official recalls

0

No recalls in this snapshot.

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

0

No exact-year investigations in this snapshot.