Other speed control problem on the 2010 Mazda CX-9
Only 4 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When other speed control problem gets reported
There are 6 reports of other speed control problem on the 2010 Mazda CX-9, 4 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 78,000 miles. It is the 11th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 21,534 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
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, every year of the Mazda CX-9
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.
Tl* the contact owns a 2010 mazda cx-9. The contact was driving 50 MPH when the vehicle surged forward uncontrollably. The contact was able to eventually stop the vehicle and the vehicle was taken to an authorized dealer where they were unable to diagnose the failure. The vehicle was not repaired. The manufacturer was made aware of the failure and offered no assistance. The failure mileage was 17,000. The VIN was unavailable.
Tl* the contact owns a 2010 mazda cx-9. While driving approximately 10 MPH, the vehicle uncontrollably accelerated into oncoming traffic. The brakes were applied repeatedly when suddenly the vehicle came to a stop. The vehicle was towed to an authorized dealer for diagnosis where the technician was unable to locate the problem. The manufacturer was notified of the unintended acceleration failure. The approximate failure mileage was 18,000.
While driving my 2010 mazda cx-9 approximately 65mph on interstate 270s in maryland, I pressed the gas pedal to accelerate in an attempt to pass several vehicles who were traveling in the right hand lane. Once I felt that I had enough additional speed to successfully pass the vehicles, I released the gas pedal and noted that the car continued to accelerate. I attempted to apply my brakes, but they would not slow the vehicle. After several unsuccessful attempts to apply my brakes, I searched for a safe place to continue traveling as my vehicle continued to accelerate, noting I would need to shift into neutral and move into the median. Luckily, after numerous repeated attempts, my brakes finally engaged and slowed the vehicle. I feel this is a manufacturer's defect that could ultimately lead to a fatality. I am too scared to drive the vehicle at this point in time. *tr
Also reported on the 2010 Mazda CX-9
Master cylinder or brake booster failure
Other brake problem
Water pump failure
Differential or transfer case failure
Loss of braking
Other engine problem
How far this goes
This page is kept out of search results because 6 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 6 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 2010 Mazda CX-9?
Across 4 owner reports that included an odometer reading, half were filed by 20,000 miles. A quarter were filed before — and a quarter after —. 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 2010 Mazda CX-9?
6 reports have been filed with NHTSA, about 0.2 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