Notes: Although it has a stellar record in terms of vehicle problems, initially the 4th generation (2003 - 2009) 4Runner didn't earn our top "Seal of Awesome" rating because it received poor crash test ratings for rear impacts. However it's proven to have one of the lowest driver death rates out of all vehicles (not just SUVs), so we've bumped it back up to our top award.


really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
2 / 0
Average Mileage:
20,338 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Toyota 4Runner fuel system problems

fuel system problem

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2006 Toyota 4Runner Owner Comments

problem #3

Feb 222012

4Runner 6-cyl

  • 59,114 miles


After noticing ongoing problems with my fuel gauge on a 2006 4runner with less than 60K miles, we brought the car into the Toyota dealer. When the Toyota mechanic pulled the fuel pump assembly out of the gas tank, he discovered a burned and melted wiring harness that sits directly inside the tank. This is a significant safety concern that should be addressed as it deals with an unregulated amount of heat and electricity in close proximity to the gas tank. The mechanic wrote down on my statement that he, "found fuel pump wiring has heat damage from [electrical] arcing." I have taken pictures and will send them if requested. Thank you.

- Burlington, ND, USA

problem #2

Aug 042007

4Runner 4WD 2-cyl

  • Automatic transmission
  • 700 miles
Vehicle is a polaris sportsman 800 that option is not available later in this form so I put Toyota. On August 4 2007 I began an atv ride/camping trip with two other individuals that was planned to go through 8/11. We stopped for lunch on day 1 and after several minutes I heard a strange hissing sound coming from my atv. I removed the gas cap at which time large volume of fuel was ejected (like a geyser) about 12-18" straight up. Thankfully I was still wearing eye protection because the fuel sprayed my face, hand, arms and torso. I initially thought that the vent hose leading from the gas tank must be clogged or pinched allowing the fuel tank to over pressurize. I checked the vent hose and it was clear and then positioned it so it could be observed. Throughout the remainder of the trip the gas tank continued to hiss and build of pressure and fuel would continuously leak, bubble, shoot out of the vent hose both when the atv was moving or not. When the atv was idling and pressure was built up, I would slowly release pressure in the tank by slowly opening the gas cap the atv would die. Brought the atv to the dealership who could not replicate the problem and therefore would not or could not fix it. I related to the authorized polaris dealership that my atv idling in their service department does not fairly replicate the environment that caused the fuel problem. I am prepared to provide your Agency with sworn statements from witnesses, photos, more detailed dates, times and names of individuals I attempted to resolve this issue with at the polaris dealership and customer service. I do not know if this is an isolated incident but considering how my concerns were brushed aside by the manufacture under the guise of being "unable to replicate" it could be wide spread. It goes without question that the nature of this problem presents a very real danger to consumers. Thank you, in advance, for your consideration and assistance in this matter.

- Las Vegas, NV, USA

problem #1

Mar 062006

4Runner 4WD 6-cyl

  • Automatic transmission
  • 1,200 miles
I recently purchased a new 2006 Toyota 4 runner. I have had nothing but motor transmission, electrical failures. I have only had my vehicle for 1 month and anything and every thing has gone wrong. I even had to give my daughter cpr on the side of the road due to carbon monoxide inhalation. She went into respiratory failure do to this she has severe asthma.

- Casper, WY, USA

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