Total Complaints
250 filings
TOYOTA SIENNA · model year
250 NHTSA complaints, 17 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1999TOYOTASIENNA carries 250 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 17 crashes, 4 fires, 27 injuries, and 1 fatality. 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 SIENNA is structure:body:door with 21 filings, followed by engine and engine cooling:engine:gasoline (19) and tires (18). 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 51 investigation files overlapping the 1999 SIENNA, and 1 remain open. 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.
Total Complaints
250 filings
Crashes Reported
17 reports
Source
NHTSA ODI
Federal complaints database
Above median complaint volume, review patterns below.
| Component | Count |
|---|---|
| STRUCTURE:BODY:DOOR | 21 |
| ENGINE AND ENGINE COOLING:ENGINE:GASOLINE | 19 |
| TIRES | 18 |
| UNKNOWN OR OTHER | 13 |
| LATCHES/LOCKS/LINKAGES:DOORS:LATCH | 11 |
| STEERING: STEERING WHEEL/HANDLE BAR | 9 |
| SUSPENSION:FRONT | 8 |
| TIRES:TREAD/BELT | 8 |
| ENGINE AND ENGINE COOLING:ENGINE | 8 |
| ENGINE AND ENGINE COOLING | 7 |
| SUSPENSION | 6 |
| POWER TRAIN | 5 |
| STEERING | 5 |
| POWER TRAIN:AUTOMATIC TRANSMISSION | 5 |
| SERVICE BRAKES, HYDRAULIC | 5 |
THE VAN HAS SUDDEN ACCELERATION PROBLEM AT TIMES IT IS HARD TO SLOW IT DOWN EVEN STOP IT. THE PROBLEM MAINLY OCCURS FROM STOP AND GO ESPECIALLY IF IT HAS BEEN PARKED FOR FEW HOURS.
Mileage: 173,000
THE VAN HAS SUDDEN ACCELERATION PROBLEM AT TIMES IT IS HARD TO SLOW IT DOWN EVEN STOP IT. THE PROBLEM MAINLY OCCURS FROM STOP AND GO ESPECIALLY IF IT HAS BEEN PARKED FOR FEW HOURS.
Mileage: 173,000
THE CABLE TO MY DRIVERS SIDE SLIDING DOOR SNAPPED, THUS THE DOOR CAN NO LONGER BE OPENED AUTOMATICALLY. THIS DEFECT IS UNDER A WARRANTY ENHANCEMENT FOR MODEL YEARS 2004-2007, BUT I HAVE A 2009 MODEL YEAR.
Mileage: 109,000
WHILE DRIVING, MY SPARE TIRE FELL FROM UNDERNEATH MY CAR DUE TO THE FACT THAT THE CABLES SNAPPED. THE CAR BEHIND ME RAN OVER IT AND I AM NOW BEING CHARGED FOR THE DAMAGES TO THAT PERSON'S CAR. *TR
Mileage: 305,000
WHILE DRIVING, MY SPARE TIRE FELL FROM UNDERNEATH MY CAR DUE TO THE FACT THAT THE CABLES SNAPPED. THE CAR BEHIND ME RAN OVER IT AND I AM NOW BEING CHARGED FOR THE DAMAGES TO THAT PERSON'S CAR. *TR
Mileage: 305,000
THE CAR WAS OFF, THE KEY WAS NOT IN THE IGNITION. MY TWO YEAR OLD DAUGHTER WAS IN THE FRONT OF THE CAR. SHE TOUCHED THE SHIFTER AND IT WENT BETWEEN PARK AND REVERSE; THE CAR STARTED ROLLING DOWN OUR DRIVEWAY. SHE DID NOT PRESS THE BRAKE (SHE IS UNABLE TO) BUT THE CAR WENT INTO REVERSE. THE VAN HIT A TREE. WE CHECKED AND THE CAR WAS IN BETWEEN PARK AND REVERSE. SO, SOMEHOW, THE CAR REVERSED EVEN THOUGH IT WAS IN PARK, TURNED OFF, AND THE BRAKE WAS NOT TOUCHED. *JS
Mileage: 165,000
TL* THE CONTACT OWNS A 1999 TOYOTA SIENNA. THE CONTACT STATED THAT AFTER SHIFTING INTO PARK, THE GEARING SHIFTER ARM FRACTURED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC FOR REPAIR, WHO STATED THAT THE ENTIRE GEAR SHIFT MODULE WOULD NEED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 90,000.
Mileage: 90,000
TL* THE CONTACT OWNS A 1999 TOYOTA SIENNA. THE CONTACT STATED THAT THE HORN WOULD FAIL INTERMITTENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 150,000 AND THE CURRENT MILEAGE WAS 225,000.
Mileage: 150,000
1999 TOYOTA SIENNA. CONSUMER REQUESTS REIMBURSEMENT OF FAULTY TIRE CARRIER REPAIRS. *SMD THE CONSUMER STATED IN EARLY 2006, HE NOTICED THE SPARE TIRE CARRIER WAS INOPERABLE, AND APPARENTLY, IT HAD RUSTED IN PLACE. HE TOOK THE VEHICLE TO A SERVICE REPAIR STATION, WHERE THEY REPLACED THE CORRODED SPARE TIRE ASSEMBLY AT A COST OF $300. SOMETIME LATER, THE CONSUMER RECEIVED A RECALL NOTICE IN THE MAIL, REGARDING THE PROBLEM HE PREVIOUSLY EXPERIENCED. THE CONSUMER THEN SUBMITTED THE PAPERWORK FOR REIMBURSEMENT. HOWEVER, TOYOTA DENIED THE REQUEST, BASED ON THE FACT, THE CONSUMER DID NOT HAVE THE WORK PERFORMED AT AN AUTHORIZED TOYOTA DEALERSHIP SHOWING COMPLETION OF SSC A9E. THE CONSUMER THEN WENT TO AN AUTHORIZED TOYOTA DEALER TO HAVE THE RECALL PERFORMED. TOYOTA DENIED THE REIMBURSEMENT AGAIN, IN A LETTER WHICH STATED THE REPAIR THAT WAS PERFORMED DID NOT MEET THE CRITERIA FOR REIMBURSEMENT UNDER THE SPECIAL SERVICE CAMPAIGN SSC A9E. UPDATED 02/06/13.
ON 11/25/2012 AT ABOUT 10:00 PM, AFTER DRIVING ON FREEWAY FOR ABOUT 100 MILES, THE FRONT WHEEL ON DRIVER SIDE BEGAN TO MAKE A SMALL NOISE AND SMALL VIBRATION AND LATER THE TIRE WARNING LIGHT CAME ON. I STOPPED BY AT A REST AREA AND DIDN?T SEE ANY NOTICEABLE PROBLEM. SINCE IT?S ABOUT 50 MILES AWAY FROM HOME, I DECIDED TO KEEP DRIVING IT AND THE NOISE AND VIBRATION CONTINUED. I CHECKED THE TIRE THE NEXT DAY AND FOUND IT FLATTENED. I FIXED IT WITH A TIRE REPAIR PLUG, PUMP IT AND I FOUND A BUBBLE ABOUT 4-INCH IN DIAMETER. I DROVE BACK TO VINELAND TOYOTA IN VINELAND, NJ ON 12/7/2012 SINCE THE TIRE WAS ONLY 18 MONTHS OLD AND WAS STILL IN WARRANTY. AFTER TAKING DOWN THE TIRE, I FOUND, ON THE OTHER SIDE OF THE TIRE, THERE WAS ANOTHER BUBBLE IN DIAMETER 3-INCH. I STRONGLY BELIEVE THERE IS A SERIOUS SAFETY ISSUE WITH THIS MODEL OF TIRES OF GOOD YEAR. IF I KEPT DRIVING MY VEHICLE FOR FEW MORE MILES, THE TIRE WOULD EXPLODE AND CAUSED A SERIOUS ACCIDENT! *TR
Mileage: 19,000
TL* THE CONTACT OWNS A 1999 TOYOTA SIENNA. WHILE DRIVING APPROXIMATELY 45 MPH, THE VEHICLE SUDDENLY ACCELERATED. THE CONTACT CONTINUED TO DEPRESS THE BRAKE PEDAL UNTIL THE VEHICLE RESPONDED AND CAME TO A STOP. THE FAILURE WAS INTERMITTENT AND RECURRED WHILE DRIVING AT DIFFERENT SPEEDS. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTICS OR REPAIRS. THE APPROXIMATE FAILURE MILEAGE WAS 125,000.
Mileage: 125,000
TL* THE CONTACT OWNS A 1999 TOYOTA SIENNA. THE CONTACT STATED THAT THE FRONT AND REAR BUMPER FAILED. THE BUMPER WAS MADE WITH DEFECTIVE MATERIAL THAT CAUSED THE BUMPER TO CRACK AND DENT EASILY WHEN STRUCK. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 100,000 AND THE CURRENT MILEAGE WAS 130,000.
Mileage: 100,000
I WANT TO REPORT A SCARY INCIDENT OCCURRED YESTERDAY WITH MY MINIVAN. ON 2/11/2011, AT ABOUT 7 AM, I STARTED BY TOYOTA SIENNA TO SEND MY SON TO HIS HIGH SCHOOL, I HEARD STRANGE NOISE. IT SOUNDS LIKE NOT ALL THE CYLINDERS WERE RUNNUNG. THE CAR WAS NOT POWERFUL AS USUAL. I TRIED TO TURN OFF MY VAN, BY TURNING THE KEY TO STOP AND TAKING KEY OUT. THE CAN DID NOT STOP. I INSERTED THE KEY TO START AGAIN, IT STILL HAD THE NOISE. I DROVE MY SON TO HIS HIGH SCHOOL ANY, WHICH IS LESS THAN A MILE AWAY. AFTER DROPPING HIM OFF AT THE SCHOOL, I DROVE BACK TO HOME. WHEN I WAS CLOSE TO MY I SAW THE TEMPERATURE METER WAS MIDWAY. WHEN I GOT TO HOME, I STOPPED MY CAR IN FRONT OF MY HOUSE, TOOK THE KEY OUT. THE ENGINE WAS STILL RUNNING. I OPENED THE HOOD, SAW SMOKE CAME OUT FROM THE ENGINE AREA. ALTHOUGH NO FLAME WAS STARTED, I USED MY HOUSE FIRE DISTINGUISHED TO PUT OUT THE SMOKE. THEN THE ENGINE STOPPED. THE CAR DIED IN FRONT OF MY HOUSE ON MY DRIVE WAY. I REPORTED THIS INCIDENT TO TOYOTA TODAY.
Mileage: 110,500
ON OCTOBER 18, 2010 MY 2009 TOYOTA SIENNA DASHBOARD VSC (VARIABLE SKID CONTROL)/OFF TRACK AND CHECK ENGINE LIGHTS ILLUMINATED. I TOOK MY VAN IN FOR SERVICE IMMEDIATELY. THE DEALERSHIP MADE REPAIRS THAT WERE COVERED UNDER WARRANTY, AND ASSURED ME THAT THE VAN WAS SAFE TO DRIVE. ON NOVEMBER 24, 2010, THE SAME VSC/OFF TRACK AND CHECK ENGINE LIGHTS ILLUMINATED AGAIN. WHEN I RETURNED TO MY LOCAL DEALERSHIP FOR SERVICE, I WAS INFORMED THAT DUE TO THE THANKSGIVING HOLIDAY, THE SERVICE DEPARTMENT DID NOT HAVE AVAILABILITY UNTIL NOVEMBER 30, 2010. SERVICE ADVISOR ASSURED ME THAT MY VEHICLE WAS SAFE TO DRIVE, AS LONG AS I STAYED IN TOWN, AND WASN'T PLANNING ON TAKING THE CAR ON ANY LONG TRIPS. HOWEVER, I NEVER GOT A CHANCE TO RETURN MY VAN TO THE DEALERSHIP BECAUSE ON NOVEMBER 29, 2010 IT STARTED TO MAKE UNUSUALLY LOUD NOISES AND ACCELERATED UNEXPECTEDLY. NATURALLY, I ATTEMPTED TO STOP BY BRAKING, BUT THE BRAKES WERE NOT FUNCTIONING AT ALL. I TRIED AGAIN AND AGAIN TO BRAKE, BUT TO
Mileage: 18,700
I HAVE A TOYOTA SIENNA 99 AND MY CHECK LIGHT COMING OUT AND START TO SMOKE SO I FIND THE ENGINE DO THE OIL BE SLUDGE, I WANT TO KNOW IF IS SOME WAY OF TOYOTA FIX THIS PROBLEM FOR ME WHIT OUT CHARGE BECAUSE IS A MANUFACTURE PROBLEM. *TR
Mileage: 118,580
I HAVE A TOYOTA SIENNA 99 AND MY CHECK LIGHT COMING OUT AND START TO SMOKE SO I FIND THE ENGINE DO THE OIL BE SLUDGE, I WANT TO KNOW IF IS SOME WAY OF TOYOTA FIX THIS PROBLEM FOR ME WHIT OUT CHARGE BECAUSE IS A MANUFACTURE PROBLEM. *TR
Mileage: 118,580
TOYOTA 1999 SIENNA CE: STEERING PULLS TO LEFT. I HAVE TO HOLD STEERING TIGHT TO KEEP IT TO RIGHT. I ALREADY GOT ALIGNMENT DONE TWO TIMES AND NEW TIRES CHANGED BUT PULLING TO LEFT STARTS RIGHT AWAY. IT IS VERY DISAPPOINTING. *TR
Mileage: 149,500
TOYOTA 1999 SIENNA CE: STEERING PULLS TO LEFT. I HAVE TO HOLD STEERING TIGHT TO KEEP IT TO RIGHT. I ALREADY GOT ALIGNMENT DONE TWO TIMES AND NEW TIRES CHANGED BUT PULLING TO LEFT STARTS RIGHT AWAY. IT IS VERY DISAPPOINTING. *TR
Mileage: 149,500
LOOSE SPARE TIRE IN CARGO SEATING AREA OF TOYOTA SIENNA 1999 VAN. DUE TO A RECALL ON THE CORROSION OF THE SPARE TIRE CABLE, THE SPARE TIRE WAS REMOVED AND PLACED IN THE CARGO AREA OF THE VAN. THE TIRE IS NOT SECURED DOWN AND MOVES AROUND DURING DRIVING. IF THERE WAS ANY TYPE OF ACCIDENT, ESPECIALLY A ROLL OVER, THE TIRE WITH THE RIM WOULD BE ABLE TO MOVE AROUND THE SEATING AREA AND COULD CAUSE SEVERE INJURIES. I DO NOT FEEL SAFE DRIVING THIS VEHICLE. I DID CALL TOYOTA WITH MY CONCERN WITH THE TIRE NOT BEING SECURED, THEY GAVE ME A CASE NUMBER AND TOLD ME THAT THERE WAS NOTHING THEY COULD DO AT THIS TIME. *TR
TWO SEAT BELTS IN MY 1999 TOYOTA SIENNA HAVE GOTTEN "JAMMED". IT HAPPENED SUDDENLY WITH EACH BELT, AND THEY BOTH JAMMED IN THE SAME MONTH. THEY ARE NOT USABLE BECAUSE THEY WILL NOT RETRACT FAR ENOUGH TO BUCKLE, AND ONE IS EVEN STUCK RETRACTED OUT. THERE IS NOTHING THAT I CAN THINK OF THAT WOULD HAVE CAUSED THIS TO HAPPEN. THEY ARE NOW PERMANENTLY JAMMED, AND I CANNOT FIND A WAY TO FIX IT. TOYOTA WANTS TO CHARGE $350 PER SEAT BELT AND I CANNOT AFFORD THAT, SO THE FAILURE HAS NOT BEEN CORRECTED. I HAVE TALKED TO MANY OTHER PEOPLE WITH TOYOTA VEHICLES THAT HAVE HAD THE SAME PROBLEM. *TR
Mileage: 133,678
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.
Read our methodology - how this data is sourced, computed, and verified.