Other powertrain problem on the 2009 Infiniti G37
2 crashes 2 of the 8 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.
Only 6 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 powertrain problem gets reported
There are 8 reports of other powertrain problem on the 2009 Infiniti G37, 6 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 92,000 miles. It is the 5th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 59,900 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 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 $400–$4,500 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 4 model years of this car. It shows up earliest on the 2011, at a median of 900 miles, and latest on the 2009 at 60,000 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 own a two-month old infiniti g37x. When braking at highway speed, the engine does not seem to slow down as fast as it should. I brought this to my infiniti dealer this week. They conducted tests on it and found that it "performs as designed." however, they acknowledged that the transmission does not slow down when the brake is applied - that the engine is designed to "click down" from gear to gear. But when braking hard at a highway speed, the car does not slow down immediately because of this design. I've been driving for 33 years and have never before felt like the car was not going to stop when it needed to. This car gives me that feeling. I've had to stop quickly a couple of times on the highway and I did not feel as though I was in control of the car. Infiniti's tests seem to confirm this. However, they did not offer any sort of repair because, again, the car is reacting as designed. They did say that a software correction might occur in the future because corporate infiniti is aware of this problem. *tr
Pulling into parking stall (brakes applied / traveling 5-10 MPH) the car lurched forward twice and stuck a parked full size truck. The car bounced backwards and lurched forward again and stuck the truck a second time and bounced backwards again. The ( off button) was able to be pushed at that time. The brake was fully applied the entire time. This has been the only occurrence. Infinity has not been able to duplicate problem and has downloaded the data base. The formal report will take approx. 4 weeks to complete. No parts have been replaced. Infinities consumer's affair has told us to pickup the vehicle and drive the vehicle despite no explanation or written proof the vehicle is safe to drive. The problem is related to either braking, acceleration or both. *tr
After driving the car for a while and then turning it off for 30 min-1hr, the transmission will surge 200-250 RPM the first time the car is driven again. The surge happens only the first time while shifting from 3rd gear to 4th gear. To date, this has not caused an accident. The engine has consistently performed like this since its purchase in february 2009. I first reported the issue to sewell infiniti, houston, tx on 9/25/09 and to west houston infiniti on 10/14/09. I have reported the issue another 6 times in addition to the two listed above. However, both dealerships claim that they cannot replicate the issue; therefore, they have not fixed the problem. On 12-22-10, infiniti issued itb10-075 to correct the problem. When I presented the itb to sewell infiniti on 3-26-11, they stated that they would review it. I was told later that the itb would have applied to my car except that one part was one letter off. I called infiniti customer support and was told that infiniti is not going to do anything further to correct the issue since the dealership cannot replicate the problem. *tr
Also reported on the 2009 Infiniti G37
Airbag warning light or occupant sensor fault
Other engine problem
Other body or interior problem
Other speed control problem
No-start or intermittent start failure
Control module (ECM/PCM/BCM) failure
How far this goes
This page is kept out of search results because 8 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 8 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 powertrain problem happen on the 2009 Infiniti G37?
Across 6 owner reports that included an odometer reading, half were filed by 60,000 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 powertrain problem on the 2009 Infiniti G37?
8 reports have been filed with NHTSA, about 13 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