There are 6 stored owner reports matching the engine leading-label group for the 2003 Lexus GX in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 6 of 6 matching reports.
Open the full vehicle complaint log (all categories)WHEN HARD ACCELERATING SULFUR SMELL ENTERS CABIN MAKES ME NAUSEATED... WONDER IF CARBON MONOXIDE IS ENTERING CABIN ALSO . WHEN STOPPING OR STOPPED DRIVE SHAFT BUMPS HARD LIKE SOMEONE HITTING BACK OF VEHICLE. *JB
A SULFUR ODOR OR ROTTEN EGG ODOR, IS PRESENT IN THE CAR WHEN ACCELERATING. I COMPLAINED ABOUT THE SMELL AT MY 1,000 MILE CHECK UP AND WAS TOLD THAT THE SMELL WOULD BE GONE BY MY 5,000 MILE CHECK UP. THE CAR STILL HAS THE ODOR AT THE 5,000 MILE CHECK UP. NOW I'M TOLD BY THE DEALER "SULFUR SMELL HAS NOT BEEN UNCOMMON DUE TO HIGH SULFUR CONTENTS IN RECENT FUEL PRODUCTION. NOTHING WRONG WITH CAR, SUGGEST USING DIFFERENT FUEL SUPPLIER." I TRIED SWITCHING GASOLINES AND IT DOESN'T MAKE A DIFFERENCE. LEXUS SAYS THAT IT IS NORMAL AND IS BECAUSE OF THE SULFUR IN THE FUEL. I FEEL THAT THEY SHOULD HAVE DISCLOSED THIS AT TIME OF SALE. THEY GAVE ME A COPY OF A MEMO DATED 2/24/03 ADDRESSING THE SMELL, SO THEY OBVIOUSLY KNOW THAT IT IS A PROBLEM. I WOULD HAVE NEVER BOUGHT THE CAR IF I KNEW IT WAS GOING TO SMELL LIKE THIS. I AM ALSO CONCERNED ABOUT THE CONSTANT SULFUR FUMES THAT ARE IN THE VEHICLE. *LA
MY SUV WHEN EVER GOING UP OR DOWN A HILL AT ANY SPEED LETS OUT A HORRIBLE SMELL. I TOOK IT TO THE DEALER AND THEY CLAIMED IT WAS BAD GAS, I LET THE TANK RUN TO EMPTY AND SWITCHED GAS DEALERS...THE PROBLEM GOT WORSE. MY SON CANNOT RIDE IN THE BACK SEAT BECAUSE HE FEELS LIKE THROWING UP EVEN DURING SHORT RIDES.*AK
WHENEVER GIVING THE VEHICLE MODERATE TO HIGH ACCELERATION, A ROTTEN EGG SMELL COMES OUT OF THE AIR CONDITIONER VENTS. THE SMELL IS SO BAD THAT IT MAKES ME DIZZY. *AK
WHENEVER GIVING THE VEHICLE MODERATE TO HIGH ACCELERATION, A ROTTEN EGG SMELL COMES OUT OF THE AIR CONDITIONER VENTS. THE SMELL IS SO BAD THAT IT MAKES ME DIZZY AND I FEEL LIKE VOMITING. I'VE BEEN TOLD BY THE LEXUS DEALER THAT THIS IS A "NORMAL CHARACTERISTIC OF THE VEHICLE" BECAUSE OF THE SULFUR CONTENT IN FUEL. I HAVE OWNED SEVERAL DIFFERENT MODELS OF LEXUS VEHICLES IN THE PAST AND NEVER HAD THIS PROBLEM. *LA
WHILE DRIVING AT ANY SPEED THE VENTS SPEW OUT A HORRIBLE SULFUR ODOR. THE ODOR IS SO BAD THAT THE WINDOWS HAVE TO BE ROLLED DOWN. CONSUMER'S 14 MONTH OLD CHILD RIDES IN VEHICLE. THE MANUFACTURER AND THE DEALER HAVE BEEN INFORMED OF THE PROBLEM.*AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 30, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.