TOYOTA 4RUNNER · model year

1999 TOYOTA 4RUNNER

312 NHTSA complaints, 17 crash reports for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 1999TOYOTA4RUNNER carries 312 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 17 crashes, 3 fires, 12 injuries, and 0 fatalities. 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 4RUNNER is structure:body with 73 filings, followed by suspension (56) and unknown or other (34). 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 1 investigation file overlapping the 1999 4RUNNER. 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.

312
Complaints
17
Crashes
3
Fires
12
Injuries
0
Deaths

Total Complaints

312 filings

Crashes Reported

17 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

Above median complaint volume, review patterns below.

Complaints by Component

ComponentCount
STRUCTURE:BODY73
SUSPENSION56
UNKNOWN OR OTHER34
STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS22
STRUCTURE:FRAME AND MEMBERS16
STEERING14
FUEL SYSTEM, GASOLINE13
POWER TRAIN12
ELECTRICAL SYSTEM10
FUEL/PROPULSION SYSTEM8
SERVICE BRAKES7
WHEELS7
VEHICLE SPEED CONTROL4
SUSPENSION:REAR3
SEAT BELTS3

Recent Complaints

20230625SUSPENSION

The frame above the RT rear tire has rusted completely through. It's where the rear end bolts to the frame, at a wedge welded to the frame with bolt holes in it. It's like it wants to flip over and darts left or right every time there's a dip or rough spot in the road. I chained it and put a tow strap around everything I could to keep the rear end from coming out & killing me or someone behind me

20220930SUSPENSION

The contact's wife owns a 1999 Toyota 4Runner. The contact stated that while his daughter was driving at a slow speed, the back end of the vehicle began to wobble. The contact stated that his daughter pulled the vehicle into a parking lot and had the vehicle towed to the contact's home. The vehicle was inspected and severe corrosion was discovered on the driver's side rear lower control arm mount. The dealer was notified of the failure and informed him that there are no recalls on the vehicle. The manufacturer was also notified of the failure and the contact was given the same information as the dealer. The vehicle had yet to be repaired. The failure mileage was approximately 240,000.

Mileage: 240,000

20211018STRUCTURE:BODY

The component that is failing is the frame. The vehicle is available for inspection upon request. The safety of myself and others is at risk due to the frame falling apart due to the lack of integrity. The lack of integrity and strength is from oxidation or major rust. The vehicle has not been inspection by a 3rd party. The rust is a common issue in this year/model from other owners and has appeared to be a manufacturing error.

20211018UNKNOWN OR OTHER

The component that is failing is the frame. The vehicle is available for inspection upon request. The safety of myself and others is at risk due to the frame falling apart due to the lack of integrity. The lack of integrity and strength is from oxidation or major rust. The vehicle has not been inspection by a 3rd party. The rust is a common issue in this year/model from other owners and has appeared to be a manufacturing error.

20210614SERVICE BRAKES

Over the years of ownership, my vehicle has been overwhelmed with rust issues. All four axles are rusted to include the brake components. I didn't realize how bad the rusting was until I heard "popping" noise when making turns The rear suspension sway bar link was rusted so bad, it broke free. I had the rack and pinion replaced in August of 2020 because rust ate through the lines. The frame appears to have separations due to rust as well.

20210614STEERING

Over the years of ownership, my vehicle has been overwhelmed with rust issues. All four axles are rusted to include the brake components. I didn't realize how bad the rusting was until I heard "popping" noise when making turns The rear suspension sway bar link was rusted so bad, it broke free. I had the rack and pinion replaced in August of 2020 because rust ate through the lines. The frame appears to have separations due to rust as well.

20210614SUSPENSION

Over the years of ownership, my vehicle has been overwhelmed with rust issues. All four axles are rusted to include the brake components. I didn't realize how bad the rusting was until I heard "popping" noise when making turns The rear suspension sway bar link was rusted so bad, it broke free. I had the rack and pinion replaced in August of 2020 because rust ate through the lines. The frame appears to have separations due to rust as well.

20210512SUSPENSION

RIGHT REAR CHASSIS RUSTED OUT

Mileage: 86,000

20210405CrashSEATS

DRIVING EASTBOUND INTO PORTLAND (OR) ON HWY.26 (SUNSET HWY.), THREE LANES INBOUND. THREE LANES INBOUND, I WAS IN THE RIGHT LANE.AS WE NEARED THE TUNNELS, TRAFFIC STOPPED BUMPER-TO-BUMPER, AS IT OFTEN DOES. I STOPPED, LEAVING A SMALL BUFFER BETWEEN MY VEHICLE AND THE ONE AHEAD OF ME, AND WATCHED THE RED MAZDA CX-5 APPROACHING BEHIND, NOT SLOWING, AND BRACED FOR THE BUMP. BAM! IT WAS A SERIOUS JOLT. WE PULLED OFF ONTO THE SHOULDER. TRAFFIC WAS BUSY, SO IT TOOK A WHILE TO GET OUT TO INSPECT DAMAGE. I WAS EXPECTING MORE THAN I FOUND, AND ACTUALLY NOTICED NO DAMAGE AT THE TIME. THE MAZDA THAT HAD REAR-ENDED ME SUSTAINED SOME SERIOUS COSMETIC DAMAGE, BUT WAS STILL DRIVEABLE. WE TRADED INFO, AND I HEADED ON TO MT.HOOD TO SKI. A COUPLE OF DAYS LATER, I NOTICED THAT MY DRIVERS SEAT WAS A BIT WOBBLY. WHEN I GOT A CHANCE TO CHECK THE CAUSE,I FOUND THAT THE FRONT LEFT BOLT HOLDING THE SEAT WAS LOOSE.I TIGHTENED IT BACK DOWN.,BUT IT CAME LOOSE AGAIN AFTER THE EMBEDDED NUT CAME LOOSE FROM THE FRAM

Mileage: 218,400

20210217UNKNOWN OR OTHER

THE FRAME IS RUSTING FROM THE INSIDE OUT

20210214STRUCTURE:BODY

MY FRAME IS RUSTED ALMOST TO PIECES. I KNOW THIS IS A COMMON PROBLEM WITH 4RUNNER OF THE SAME YEAR MODELS. AND I HOPE TO GET A RECALL BECAUSE IT'S PUTTING ME AND OTHERS AT RISK OF WRECKING THE CAR AND POSSIBLE INJURIES.

Mileage: 262,000

20201028SEATS

TL* THE CONTACT OWNS A 1999 TOYOTA 4RUNNER. THE CONTACT STATED THAT THE DRIVER'S SIDE FRONT SEAT ADJUSTER LEVER WAS FRACTURED. NEITHER THE LOCAL DEALER NOR THE MANUFACTURER WERE CONTACTED OR INFORMED OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE FAILURE MILEAGE WAS 100,000.

Mileage: 100,000

20201017SUSPENSION

MY VEHICLE IS VERY CLEAN AND WELL MAINTAINED AND HAD NO INDICATION OF TROUBLE OR HANDLING ISSUES. A REPAIR SHOP WAS TAKING IT BACK TO FIX AN EXHAUST PROBLEM WHEN HE NEARLY LOST CONTROL. I COULDN'T BELIEVE IT WHEN HE NOTIFIED ME IT WAS UNSAFE TO DRIVE, BUT FOUND OUT THAT ONE SECTION OF THE FRAME HAD TOTALLY RUSTED THROUGH WHERE THE AXLE LINK MOUNTS TO THE FRAME. IT COULD HAVE TORN THE AXLE OUT FROM UNDER THE VEHICLE WITH NO PREVIOUS WARNING. I HAD BEEN DRIVING ON 4 LANE INTERSTATE AT 70 JUST DAYS BEFORE WITH NO HANDLING ISSUES AT ALL. I PERSONALLY HAVE CHANGED THE OIL AND GREASED THE DRIVE TRAIN ALL BUT ONCE OVER THE PAST FIVE YEARS AND NOT NOTICED THIS SMALL AREA OF SEVERE RUST THROUGH. I HAVE ALSO SPENT OVER $3000 ON EXHAUST, TIRES, AND MAINTENANCE REPAIR OVER THE PAST YEAR BECAUSE I THOUGHT IT WAS WORTHY OF 5-10 MORE YEARS AND 100,000 MORE MILES. MY 2001 CAMRY IS DRIVEN BY MY SON NOW AND HAS APPROXIMATELY 390,000 MILES ON IT. I JUST SOLD MY 1994 JEEP CHEROKEE WITH OVER 300,000 MILES

Mileage: 182,600

20201004SUSPENSION

VEHICLE FRAME IS ROTTED

Mileage: 150,000

20201004UNKNOWN OR OTHER

VEHICLE FRAME IS ROTTED

Mileage: 150,000

20200802STRUCTURE:BODY

I HEARD RUBBING NOISES FROM MY LEFT FRONT WHEEL.I THOUGHT BRAKES BUT WHEN I INSPECTED THE UNDERSIDE OF MY VEHICLE I NOTICED THAT THE RUBBING WAS COMING FROM A RUSTED AND BROKEN OFF BRAKE SHIELD.I AM OLDER WITH BACK ISSUES SO GETTING UNDER THE CAR FOR A GOOD LOOK M IS TOUGH AT BEST.WHAT I COULD SEE USING A RIGID SEESNAKE BOROSCOPE WAS EXTENSIVE RUST .RUST ALL OVER KEY STRUCTURAL FRAME COMPONENTS FROM MOTOR MOUNTS TO STEERING LINKAGE THE CHASSIS IN SOME AREAS HAS COMPLETELY DISAPPEARED.LOOKING AT THE BODY YOU WOULD THINK THE CAR WAS IN REALLY GOOD SHAPE BUT NOT UNDERNEATH.TOYOTA DIDN'T HAVE 4RUNNERS AS PART OF THEIR RECALL BUT THEY SHOULD HAVE AS THE 4RUNNER USES THE SAME TRUCK CHASSIS AS THE TACOMAS .I NEED THIS TRUCK AND I NEED IT TO BE SAFE.THANKS FOR LISTENING

Mileage: 150,000

20200802STEERING

I HEARD RUBBING NOISES FROM MY LEFT FRONT WHEEL.I THOUGHT BRAKES BUT WHEN I INSPECTED THE UNDERSIDE OF MY VEHICLE I NOTICED THAT THE RUBBING WAS COMING FROM A RUSTED AND BROKEN OFF BRAKE SHIELD.I AM OLDER WITH BACK ISSUES SO GETTING UNDER THE CAR FOR A GOOD LOOK M IS TOUGH AT BEST.WHAT I COULD SEE USING A RIGID SEESNAKE BOROSCOPE WAS EXTENSIVE RUST .RUST ALL OVER KEY STRUCTURAL FRAME COMPONENTS FROM MOTOR MOUNTS TO STEERING LINKAGE THE CHASSIS IN SOME AREAS HAS COMPLETELY DISAPPEARED.LOOKING AT THE BODY YOU WOULD THINK THE CAR WAS IN REALLY GOOD SHAPE BUT NOT UNDERNEATH.TOYOTA DIDN'T HAVE 4RUNNERS AS PART OF THEIR RECALL BUT THEY SHOULD HAVE AS THE 4RUNNER USES THE SAME TRUCK CHASSIS AS THE TACOMAS .I NEED THIS TRUCK AND I NEED IT TO BE SAFE.THANKS FOR LISTENING

Mileage: 150,000

20200802SUSPENSION

I HEARD RUBBING NOISES FROM MY LEFT FRONT WHEEL.I THOUGHT BRAKES BUT WHEN I INSPECTED THE UNDERSIDE OF MY VEHICLE I NOTICED THAT THE RUBBING WAS COMING FROM A RUSTED AND BROKEN OFF BRAKE SHIELD.I AM OLDER WITH BACK ISSUES SO GETTING UNDER THE CAR FOR A GOOD LOOK M IS TOUGH AT BEST.WHAT I COULD SEE USING A RIGID SEESNAKE BOROSCOPE WAS EXTENSIVE RUST .RUST ALL OVER KEY STRUCTURAL FRAME COMPONENTS FROM MOTOR MOUNTS TO STEERING LINKAGE THE CHASSIS IN SOME AREAS HAS COMPLETELY DISAPPEARED.LOOKING AT THE BODY YOU WOULD THINK THE CAR WAS IN REALLY GOOD SHAPE BUT NOT UNDERNEATH.TOYOTA DIDN'T HAVE 4RUNNERS AS PART OF THEIR RECALL BUT THEY SHOULD HAVE AS THE 4RUNNER USES THE SAME TRUCK CHASSIS AS THE TACOMAS .I NEED THIS TRUCK AND I NEED IT TO BE SAFE.THANKS FOR LISTENING

Mileage: 150,000

20200620FUEL/PROPULSION SYSTEM

THE VEHICLE READS EMPTY WHEN FULL AND FULL WHEN EMPTY SOMETIMES. CONSTANTLY CHANGING NEVER ABLE TO KNOW IF THE TANK IS FULL AND RAN OUT OF GAS SINCE IT WASN'T READING THE CORRECT AMOUNT CAR WAS NOT IN MOTION WHEN I RAN OUT FORTUNATELY. *TR

Mileage: 199,252

20200528ENGINE

VALVE COVER GASKET FAILED HEAD GASKET FAILED, 3RD CYL AFFECTED. *TR

Mileage: 350,000

Compare 1999TOYOTA4RUNNER to Similar Vehicles

NHTSA Investigations

Frequently Asked Questions

How many complaints does the 1999 TOYOTA 4RUNNER have?
The 1999 TOYOTA 4RUNNER has 312 NHTSA complaints, 17 crashes, 3 fires, 12 injuries, and 0 deaths reported.
What are the most common problems with the 1999 TOYOTA 4RUNNER?
The most-complained component for the 1999 TOYOTA 4RUNNER is STRUCTURE:BODY with 73 complaints. Other frequently reported areas include SUSPENSION and UNKNOWN OR OTHER.
Is the 1999 TOYOTA 4RUNNER safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

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.