Other speed control problem on the 2014 Chevrolet Impala
When other speed control problem gets reported
Owners of the 2014 Chevrolet Impala report other speed control problem at a median of 50,000 miles. A quarter of the reports come in before 10,000 miles and a quarter after 90,000 miles, from 11 reports that carried an odometer reading.
A part like this is normally expected to survive 78,000 miles. It is the 17th most-reported problem on this model year.
The mileage distribution
The reported range runs from 5,000 miles at the tenth percentile to 100,000 miles at the ninetieth, a spread of 96,000 miles across the middle 80% of reports.
When the reports scatter this far, the mileage is telling you about how these cars were driven more than about the part itself.
45% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 4,000 miles | 10,625 miles | 50,000 miles | 89,300 miles | 100,000 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
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 17 model years of this car. It shows up earliest on the 2014, at a median of 50,000 miles, and latest on the 2002 at 130,000 miles.
By volume the 2009 carries the most reports, with 105; the 2014 has 18. 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.
Tl* the contact owns a 2014 chevrolet impala. The contact stated that while driving 35 MPH, the vehicle surged with hesitation. The failure recurred whenever traveling at the speed of 35 MPH. The vehicle was taken to an authorized dealer, who stated that the vehicle functioned as designed. The manufacturer was not notified of the problem. The approximate failure mileage was 4,000. The VIN was unavailable.
While driving on texas highway 287, southbound, my anti-collision alert system activated. It sounded a loud beeping, followed by a full application of all brakes. Startled, I was able to apply the accelerator pedal to resume my speed. Approximately 5 miles further, the incident repeated it self. During the first incident, there were no vehicles in front of me, none. The road was dry, straight and free of any obstacles. There was no traffic behind me. The second time the car automatically locked up my brakes, there was a car behind me, but he was able to swerve and avoid rear-ending me. Again, there was no traffic of any type ahead of me and the road was flat, dry and straight. Again I was able to apply the accelerator pedal to regain control of the car and pull over to the side where I .shut off the engine. I restarted the engine and proceeded to my destination in springtown, texas without further incident. I took the car to the dealership the next week for a diagnostic search and repair of the incident. They had the car for three days and told me nothing was wrong with the car. I'm filing this complaint, because I believe that…
When decelerating at a red light which turned green, attempted to accelerate with no throttle response, even when pushed to the floor for approximately 2 seconds or more (several similar incidents). Second incident, car stalled at a slow speed. Third incident, after accelerating the engine rpms stay reving high after taking foot off the gas for several seconds, and this has happened on several occasions and as recently as 9-16-15. These incidents all occured before and after a complete gm dealer reprogrammed the computer.
Also reported on the 2014 Chevrolet Impala
Other electrical problem
Other steering problem
Other driver assistance problem
Lane keep or steering assist fault
Other brake problem
Other engine problem
How far this goes
Complaints are voluntary, so 18 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 2014 Chevrolet Impala?
Across 11 owner reports that included an odometer reading, half were filed by 50,000 miles. A quarter were filed before 10,000 miles and a quarter after 90,000 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 2014 Chevrolet Impala?
18 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