What breaks most · 1994 to 2005 model years
Toyota 4 Runner problems by year
Owners have filed 1,034 safety complaints with NHTSA about the Toyota 4 Runner across model years 1994 to 2005. Three years stand out: 2003 for engine and cooling complaints, 1995 for engine and cooling complaints and 1997 for suspension complaints. The quietest years are 2001, 2002 and 1994.
- Years to check closely: 2003, 1995, 1997
- Fewest complaints: 2001, 2002, 1994
- Complaints on file
- 10341994 to 2005, all trims
- Worst year
- 2003168 complaints
- Crashes reported
- 1218 fires · 134 injuries · 7 deaths
- Typical failure mileage
- 49kMedian where owners gave mileage
- Recall campaigns
- 0Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 52 | 8 | 0 | Engine and cooling (20) | |
| 125 | 11 | 0 | Engine and cooling (77) | |
| 89 | 12 | 0 | Engine and cooling (24) | |
| 122 | 23 | 0 | Suspension (30) | |
| 120 | 12 | 0 | Tires (29) | |
| 110 | 18 | 0 | Tires (27) | |
| 104 | 21 | 0 | Brakes (hydraulic) (27) | |
| 31 | 3 | 0 | Engine and cooling (8) | |
| 32 | 7 | 0 | Suspension (6) | |
| 168 | 1 | 0 | Engine and cooling (75) | |
| 66 | 5 | 0 | Engine and cooling (18) | |
| 15 | 0 | 0 | Engine and cooling (4) |
What fails on the 2003 Toyota 4 Runner
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Engine and coolingRadiators, thermostats and cooling | 45% |
75 | 0 | Shop engine and cooling parts for the 2003 Toyota 4 Runner |
| Powertrain and transmissionTransmission parts | 11% |
18 | 0 | Shop all powertrain and transmission parts, not filtered to this vehicle |
| Seats | 10% |
17 | 0 | — |
| VisibilityMirrors and glass | 8% |
13 | 0 | Shop visibility parts for the 2003 Toyota 4 Runner |
| Brakes (hydraulic)Brake pads, rotors and calipers | 5% |
8 | 0 | Shop brakes (hydraulic) parts for the 2003 Toyota 4 Runner |
| Body and structureDoors, latches and body hardware | 4% |
6 | 0 | Shop body and structure parts for the 2003 Toyota 4 Runner |
| Speed control and throttleThrottle and pedal sensors | 4% |
6 | 0 | Shop speed control and throttle parts for the 2003 Toyota 4 Runner |
| Tires | 3% |
5 | 0 | — |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
-
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
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Dt*: the contact stated while parked, a lack of compression was noticed when the accelerator was depressed. The vehicle was taken to the dealership who tested the engine and determined the head gasket had to be replaced. The vehicle remained inoperable waiting for a solution from the manufacturer.
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While attempting to make a turn under rainy road conditions rear end began to slide out of control. As a result, driver did a 180 degree spin, and stopped head on in a ditch. Upon impact, none of the vehicle airbags deployed. *ak
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Toyota 4 Runner years have the most problems?
By NHTSA complaint volume, 2003, 1995, 1997 carry the most filings on the Toyota 4 Runner. The 2003 alone has 168 complaints, led by engine and cooling.
What is the most common Toyota 4 Runner problem?
On the 2003 model year, the most-reported component is engine and cooling with 75 complaints. The table above lists the top components for every year.
At what mileage do Toyota 4 Runner problems start?
The median mileage at failure across all Toyota 4 Runner complaints that include mileage is about 49,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.