Other speed control problem on the 2009 Infiniti G37
1 crash 1 of the 9 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 2009 Infiniti G37 report other speed control problem at a median of 55,000 miles. A quarter of the reports come in before 20,000 miles and a quarter after 120,000 miles, from 8 reports that carried an odometer reading.
A part like this is normally expected to survive 78,000 miles. It is the 4th most-reported problem on this model year.
The mileage distribution
The reported range runs from 5,000 miles at the tenth percentile to 170,000 miles at the ninetieth, a spread of 165,026 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.
50% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 2,774 miles | 18,200 miles | 52,806 miles | 121,000 miles | 167,800 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, 1 a crash is 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 6 model years of this car. It shows up earliest on the 2012, at a median of 10,000 miles, and latest on the 2009 at 55,000 miles.
By volume the 2009 is the worst of them, which makes this a problem of this specific year rather than of the model as a whole.
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.
I purchased a new g37x infiniti on march 31, 2009. On april 14, I was driving in a line of traffic and had to stop for a red light. I applied my brake and instead of stopping the car kept on accelerating (lunging) forward and finally hit the car in front of me. I was going slowly and there was no damage. The driver of the hit vehicle got out to inspect the damage and while he was looking, the car lunged forward again, almost hitting him. I thought perhaps it was my fault because it was raining out and the car has ABS brakes which my previous 12 year old car did not have so I thought I didn't know how to drive in the rain. I immediately drove straight to the infiniti dealer and they checked it out and could find nothing wrong. On saturday, november 7, 2009, I was coming to a stop sign and applied my brakes and again the car wouldn't stop. It kept lunging forward and went through the intersection. Fortunately, no one was crossing the street and there were no cars in front of me. I was really shaken up. On monday, november 9, I brought it back to the infiniti dealer and they said there was a harsh 4>3 downshift causing vehicle to…
Driving my new 2009 g37x infiniti and made a fairly hard brake for a red light - car slid a little to a stop, but continued accelerating at 2500 to 3000 rpms while I held both feet on the brake to keep it in place. It was like holding back a revved up jet - rpms would not come down even when I shifted car to neutral. Never experienced anything like this is 40 years of driving. Noticed odi complaint # 10296445 which is the exact description of what happened to me (without collision) with the same vehicle - 2009 infiniti g37x sedan. This problem is going to cause someone to get injured or killed! Have an appointment with dealer on wednesday morning. *tr
Tl* the contact owns a 2009 infiniti g37. The contact stated that while driving 40 MPH and attempting to accelerate the vehicle hesitated before shifting gears. The vehicle was taken to the dealer who was unable to diagnose the failure. The failure recurred multiple times. The manufacturer was not made aware of the failure. The failure mileage was 23,000.
Also reported on the 2009 Infiniti G37
Airbag warning light or occupant sensor fault
Other engine problem
Other body or interior problem
Other powertrain problem
No-start or intermittent start failure
Control module (ECM/PCM/BCM) failure
How far this goes
Complaints are voluntary, so 9 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 2009 Infiniti G37?
Across 8 owner reports that included an odometer reading, half were filed by 55,000 miles. A quarter were filed before 20,000 miles and a quarter after 120,000 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 2009 Infiniti G37?
9 reports have been filed with NHTSA, about 15 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