Other engine problem on the 2006 Toyota Highlander
2 fires 1 injury 3 of the 24 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
When other engine problem gets reported
Owners of the 2006 Toyota Highlander report other engine problem at a median of 100,000 miles. A quarter of the reports come in before 50,000 miles and a quarter after 130,000 miles, from 21 reports that carried an odometer reading.
A part like this is normally expected to survive 95,000 miles. It is the 3rd most-reported problem on this model year.
The mileage distribution
The reported range runs from 30,000 miles at the tenth percentile to 175,000 miles at the ninetieth, a spread of 146,500 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
14% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 29,500 miles | 48,000 miles | 101,128 miles | 128,648 miles | 176,000 miles |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 2 a fire and 1 an injury are mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $300–$4,000 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 22 model years of this car. It shows up earliest on the 2013, at a median of 2,300 miles, and latest on the 2011 at 120,000 miles.
By volume the 2008 carries the most reports, with 46; the 2006 has 24. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
Toyota highlander hybrid-I have lost ABS brakes, stability control and power steering along with the hybrid engine on two occasions with my 2 week old 2006 highlander. I have brought it to the dealer twice-the first time they found "malfunction codes" and "rebooted" the computer and told me it was operating as "designed," only to happen again 2 days later. Currently, they are replacing a computer. Date of incident and purchase of vehicle is actually 2006 but is not an option below. I am concerned it will happen again and result in an accident in the future. *jb
When I use the A/C and turn it off a bad odor comes from the vent . This is a new 2006 highlander, the next day I brought it to the dealer he said take for service , they told me to drive it for a few more days . I put 1500 miles and the odor is still there . I took it for service again . The mechanic said to use a deodorizer on the vent. I am not a satisfied customer. I want this issue resolved. I paid for the highlander not the smell that came with it. *nm
From a parked position, I started engine on 2006 toyota highlander. The car moved forward for a few seconds at slow speed, then very rapidly accelerated so that I could not stop the car. Serious injuries occurred. Car flew through air and onlookers heard engine rev up.we landed in a water canal. *tr
Also reported on the 2006 Toyota Highlander
Other brake problem
Other speed control problem
Other electrical problem
Other visibility problem
ABS module or sensor failure
Other powertrain problem
How far this goes
Complaints are voluntary, so 24 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does other engine problem happen on the 2006 Toyota Highlander?
Across 21 owner reports that included an odometer reading, half were filed by 100,000 miles. A quarter were filed before 50,000 miles and a quarter after 130,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is other engine problem on the 2006 Toyota Highlander?
24 reports have been filed with NHTSA, about 0.3 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed