*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Engine
Head gasket failure. 2005 toyota 4runner generation are notorious for head gasket failure. Due to the poor manufacturing of the gasket it has been deteriorating and has allowed coolant to leak into the cylinder causing misfires and possibly more damage internally. including permanent mechanical breakdown or a completely ruined engine block. High risk of Hydrolock, Damaged Engine Bearings and Sludge, Severe Overheating, Catalytic Converter Failure. Any of these effects cause by this head gasket failure will be extremely dangerous to happen while driving. The vehicles is being taken to a independent mechanic 09/28/2026 for conformation diagnosis. And possible repairs. The check engine light…
Mar 1, 2025Suspension
I have a 2005 Toyota 4runner with frame rust that has caused everything under my 4runner to rust. Toyota knows these frames have problems with rust and corrosion and have done nothing, I am far from being the only one with this complaint or problem. It is up for inspection anytime. I have taken it to get work done at shops and been turned away because of the amount of rust on all bolts, lines, all metal under truck causing it to be a liability. I cant even get my skid plates off to fully address the issue. The metal is starting to split on the main frame by the tire, it is rotting from inside. Rust has always been there but last couple years has gotten really bad. So much rust my gas tank…
May 5, 2026Electrical system › Instrument panel › Speedometer/odometer
Odometer Fraud. The contact purchased a 2005 Toyota 4Runner. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 217,000, and at the time of registration, it was discovered that the mileage was 342,912.
Nov 3, 2025 · 342,912 milesUnknown or other
Premature/unsafe frame rot
Dec 5, 2025Structure
The contact owns a 2005 Toyota 4Runner. The contact stated that while driving at an undisclosed speed, the vehicle briefly hesitated and was unable to accelerate, prompting the contact to discontinue driving the vehicle. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the catalytic converter. The contact was also made aware that the mechanic discovered excessive corrosion covering the entire subframe of the vehicle. The contact was advised not to drive the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 205,000.
Aug 4, 2025 · 205,000 milesPower train
- The undercarriage and frame have had premature rusting for years. The car is otherwise in excellent condition due to my care of it over the last 20 years. 5 years ago, a service person at my local Toyota dealership said, "I'm really disappointed in Toyota, I've never seen rust like this." I have now recently been told by a local service shop that it's time to get a new car. The lines are all corroded for the power steering, etc, and he was unable to even "touch them," and said that the rust issue is no longer safe, and we shouldn't drive far from home. - We are now unable to drive the car much, as we live in the country and have far communities. With a [XXX] , we are unwilling to drive…
Jun 1, 2025Unknown or other
When I first saw the pictures on the internet, I noticed that the front underside appeared to have rust issues. (Frontal shot) I contacted that sales person and he blew me off when I requested photos of the underbody. After several attempts, he finally sent a couple of pictures. The pictures obviously did not show the major rust issues as I have provided. The pictures were carefully fabricated not to show the major rust issues. It was apparent that the vehicle was taken off the internet while they hid the rusty underbody by applying some coating. A short time later, the dealership reposted the vehicle on their website. The vehicle was not properly advertised as having this major rust issue.…
May 15, 2024Suspension
ENTIRE body frame has excessive rust, holes, and cracks. It is available for inspection. Toyota dealership says it is safe to drive for now but it is failing. I feel any cracks, rust, holes, separation of frame components places all occupants and anyone near the vehicle at risk for when anything fails - this could be when the vehicle is on the expressway in motion (such as when the GM ignition switch failures happened), causing catastrophic loss of life, injuries, and damage to all. It's not a matter of "if" it happens, it's "when" it will happen. There are no warning lamps, messages, or other symptoms of the problem. The exterior, interior, braking, engine of the vehicle are in remarkable…
May 28, 2025
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
