Other speed control problem on the 2004 Subaru Outback
5 crashes 1 injury 6 of the 14 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 speed control problem gets reported
Owners of the 2004 Subaru Outback report other speed control problem at a median of 80,000 miles. A quarter of the reports come in before 50,000 miles and a quarter after 100,000 miles, from 12 reports that carried an odometer reading.
A part like this is normally expected to survive 78,000 miles. It is the 1st most-reported problem on this model year.
The mileage distribution
The reported range runs from 5,000 miles at the tenth percentile to 115,000 miles at the ninetieth, a spread of 111,500 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.
25% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 5,000 miles | 47,750 miles | 78,500 miles | 97,750 miles | 116,500 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, 5 a crash 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 $250–$2,000 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.
This mode is classified as critical, which means a failure can leave the car unable to stop, steer, or stay out of the way of traffic. It is weighted accordingly in the risk score.
The same failure on other years
The same failure is reported on 25 model years of this car. It shows up earliest on the 2022, at a median of 700 miles, and latest on the 1997 at 120,000 miles.
By volume the 2006 carries the most reports, with 38; the 2004 has 14. 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.
On two separate occasions, with two different drivers, my subaru outback 2004 vehicle experienced dangerous sudden acceleration. In both cases, we were stopped in traffic for a few minutes, foot on the brake, when suddenly, the car began to surge forward. Even exerting strong pressure on the brake, the car continued to surge forward, the engine racing. On one occasion, we were behind other stopped cars and almost rear-ended the car in front of us. On another, we were stopped at a cross walk and almost lurched forward into pedestrians. In both cases, we then threw the car into neutral (it is an automatic). The engine then raced wildly for a few seconds. We then threw it into park. At this point, the engine continued to race, then subsided. A moment later, the car was behaving normally again. Our initial calls to subaru were regarded with lightheartedness. They told us, in essence, we didn't know how to drive (each driver has more than 30 years driving experience). A search on the internet reveals many other subaru owners who have had this problem, and a subaru history of ignoring it and their customers' safety. Shame on subaru…
The vehicle tends to have poor acceleration performance during first 1 minute of operation causing a sudden surge of power during the first few minutes of operation climbing our 15% grade driveway. Initially the car would not even go up the driveway. The dealer found some of the problem, but it still continues to surge if the car is left setting for a few day. Very difficult to duplicate so the dealer says "it is not a problem if we cannot duplicate." prolbem has occurred starting in about april 2004 and continued thru today. My wife says the car is dangerous the way it surges when a lot of throttle is applied to overcome the poor response. *ak
The automatic gear shift had been locked in park, which never happened previously. It eventually was released by putting the tip of a key into the area of the panel. Advised for this problem in the drivers manual. After driving the vehicle twice more , it was parked again. When the key was put in the ignition, there was a whirring sound and when it started, it surged forward very rapidly and could not be stopped by using the brakes.. The vehicle was out of control. It was off the road and rocks punctured a tire. It stopped. When brought to the subaru repair shop, the insurance adjustor did not advise repair, because of heavy damage to the engine, transmission etc. *tr
Also reported on the 2004 Subaru Outback
Airbag inflator rupture
Cruise control failure
Other engine problem
Other electrical problem
Control module (ECM/PCM/BCM) failure
Engine sensor failure
How far this goes
Complaints are voluntary, so 14 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 speed control problem happen on the 2004 Subaru Outback?
Across 12 owner reports that included an odometer reading, half were filed by 80,000 miles. A quarter were filed before 50,000 miles and a quarter after 100,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is other speed control problem on the 2004 Subaru Outback?
14 reports have been filed with NHTSA, about 0.6 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