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Mine now has 700 miles on it, and it's getting worse, not better. Hesitation (the time from when I hit the gas pedal, to when the car moves) is about 1 second, and it's happening far more frequently now than it did when it had just 40 miles on it.
If you are reading this and thinking about purchasing an Infiniti with a 7 speed automatic transmission, here is my advice: TEST DRIVE THE CAR FOR 1 WEEK!
If the dealer doesn't allow you to take it for a week so that you can 'truly' experience this awful transmission, then don't you have to wonder why?
I should have bought out the least on my Acura TL, rather than go with Infiniti. It's awful.
By the way, how does Consumer Reports not mention this awful transmission in their reviews?
Makes me question their ability to be objective and give honest opinions on anything, let alone vehicles.
One last issue. Has anyone else noticed the Edmunds themselves rave about the performance of the car. Did they test drive one?
I test drove a car for about 30 minutes. I hit the highway, busy streets and neighborhood driving. The problem I am facing did not occur. When I drove home the car I actually purchased, I had no issues. It wasn't until there was about 500 miles on it that the problem arose. At first they told me the car needed to "learn" my driving style. At 1700 miles the problem continued so I took it in. The computer update was preformed and the car was fine for about 500ish miles. It has since been back two more times. The Second time it was in, the service technician told me that it is a "known issue" and they are working on it. It will be going back a fourth time this week. If this does not resolve the issue I will aggressively pursue the Lemon Law. The car is NOT safe and I have lost confidence in the ability to pull into traffic.
I read everything I could find on the car before purchasing. Even Edmunds, the host of this site raved about the car. Now go on line and type in g37 acceleration problmes. You will see countless hits. Had I known then what I know now, I would not have purchased the car. Sad to say for a car that looks really cool and for the first 500 miles after a "fix" runs great. To me the head-ache or in your case possible head ache is simply not worth it. My reasearch shows this is an issue specifically related to the new 7 speed transmission.
The car is going back Friday, ironically April 1st, April foold day. They are going to work directly with the regional people to get the issue resolved once and for all. We will see.
When the car runs correctly it is a great car. I would recomend it in a heartbeat........BUT......not with the problem I am having. Nothing like pulling into traffic and the car hesitating.....
When you get back to dealer on Apr 1st make sure you have both software patches applied:
ITB10075 - Transmission Shift Issues and/or A/T DTC Stored
ITB09032 - 7 Speed A/T Harsh Downshift on Deceleration
Even though I have M model, both were applicable to my car as well and it's like I brought home a whole new car. It has made a REALLY big difference. It's probably the best thing to happen to my Infiniti since I got it.
Good Luck with yours!
I will post again after 4/1 to let you know what happened.
I took the car for a ride with a service technician. The car did act up. I now have a meeting with a technician with a rep directly with Infinity on 4/25.
For those interested in a g37 or a current owner, I suggest checking out myg37.com. Several current postings on the problems related to the car.
I have been driving 2010 G37S MT6 sedan for a year, and it is a flawless performing rocket. The driver keeps total control when driving a MT. More folks should consider this option.
However, Infiniti at least continue working on it and trying to do their best (I hope).
All new model cars have issues. I bought a 2009 Accord with a defective rear brake system.
I've been researching options for my next car, and initially thought the G37. But since following this forum, I've been thinking of the BMW. But now BMW has issues.
Are there ANY quality cars left in production today? God help us all.
IF YOU HAVE TO DRIVE IN CITY/SUBURBS WITH LOTS OF STOP AND GO, DO NOT BUY THIS CAR. YOU WILL NOT LIKE IT.
I will be trying to get out of my lease asap. Infiniti - never, ever again. Too bad...
Yes, I've noticed your posts here and on myg37.com, and found them thoughtful. While there is always, in my opinion, a lag/hesitation/jerkiness in the g37, it does tend to come and go in terms of degree. Frustrating. And it has ruined the car "experience".
I would note that while the problem is not fixed, my mpg has been worse after the correction.
I'm not sure if I feel better or worse about knowing other brands have similar problems. But I do know that if Infiniti does not step up, they've lost this customer, and anyone else I can persuade not to buy.
You'd think that if had this problem as consistently as we have, they'd really try to make it right, but if they want to ruin the brand along with the transmission, I suppose that's their choice.
I don't know if there are class action possibilities, but if there are, hopefully we'll find out about them. In the meantime, I will be working on my zen - so this doesn't bother me too much- while I also work to exit from this vehicle as soon as possible, without getting terribly slammed on the lease.
BTW- I'm in the DC area.
Were these hesitation problems happening when you first brought the car or did they develop over time?
I am strongly considering leasing a g25x and have driven them at three different dealers. The first one has all the problems mentioned in this thread concerning hesitation when you hit the gas hard.
The other two were fine and shifted smoothly and enjoyably. The first car was one of the managers and was was being used for commuting and had miles on it. The other two were low miles demos. They said they would let me test drive my new car first before I lease it so that's why I'm wondering if I won't notice it at first and think I got a good one and be surprised later.
Every car does seem to have its issues. I'm hoping Infiniti fixes this problem in their next model so I can get one. And you're right about BMW - their 335 models have a high pressure fuel pump issue that constantly goes out and stalls the car.
I used to have a Maxima that ran beautifully. Why don't they build cars like they used to anymore? What ever happened to quality??
If that is your life, then I'd think long and hard about buying an Infiniti, if the hesitation is noticable or bothers you. I can tell you this issue gets in your head...and makes owning the car an unhappy experience.
Not sure of the exact update # but i could find out.
My car also was driving very heavy (very rough road feel). Got new tires (less performance focused) and now the road feel is better. I'm not sure this relates to the transmission, but the "softer" tires did improve the overall experience or at least reduces the effect of the transmission issues.
BTW - drove a 2011 G25 they gave me as a loaner, and the transmission problems were EVEN WORSE than my car. And that was with only 1000 miles. Sheesh. I guess I won't be buying another Infiniti anytime soon.
The Accord EXL 4cyl and the G25X lease out the same surprisingly even though there is a $7,000 price difference in MSRPs. This is my first new car in a while and I wanted to get something fun and the G25x's fit and finish and handling are so much nicer but these problems and what I hear about the soft paint are steering me away.
I can say that I had my tires on my G37XS replaced with a set that gives a softer ride, and it has greatly improved the driving experience. So without any knowledge of the Accord, if you go with the G25x, I'd suggest considering those softer tires, constantly checking with the dealer for computer software updates for the transmission, and a shorter lease (like 24 months), in case you can't stand the transmission after all. Good luck.
I had the TSB IT 10-075 applied in January 2011- it's a reflash of the ECU / TCM that helps with the harsh downshifts 4>3 and coasting to a stop is smoother....but does nothing for the hesitancy... Not to derail your purchase consideration of a G37X or G25X, but to date, Infiniti has admitted tom me pursuant to my filed Consumer Affairs complaints that there is Nothing Wrong with the Car - it is operating as Designed ... thats' from the District Manager and his boss who have driven the car with me...Maybe there will bea nother Reflash but no promises. It's weird b/c the way she drives can vary from Excellent Performance to Quirky on any given day. It's all in the Electronics of all the cars today. Our 2011 Ford Taurus (company car) is less quirky/jerky/hesitant, But it's There Too.... Taurus has a ^ speed AT, Infinti has the 7 AT - too many gears - that lumbering feeling btw, is the affects of gear hunting - the tranny is in too high a gear at slower speeds causing torque converter lockup too soon, so when you step on it, it hesitates b/c of having to downshift too many gears....that's they way it's been explained to me. Check MyG37.com Forum for more info...
I have a 2011 G37 Sport Convertible. I've had it for 3 months now but before that I had the 2011 M37 Sport. I traded in the M37 after 9 months cause the transmission shifting/lag was so bad. What made it even worse on the M was that the M is a heavier car so lag was even worse. Iinfinit would not do a buy back on my M so in the end I decided to trade it straight across for the G37 sport convertible completely loaded. I figured if I'm gonna have to drive a car with this lag, it may as well be a convertible that is lighter. With this in mind, I've driven the car city and highway for 3 months and I've come to the conclusion that ALL 7 speed AT are gonna have lag, its the [non-permissible content removed] way that they are designed, the good news is that my G37 sport has a little less lag cause its lighter and gets up and goes from a dead stop. However, it WILL still lag when breaking and then hitting the throttle again. My final thoughts are this;
You just have to learn to drive these 7 speed AT in a certain way. You can't hit the throttle hard when coming to a stop, you've simply got to just let the tranny catch up with the car and go from there. It sucks but it makes your life easier if you just simply learn to drive it in a certain way. You can still accelerate quickly out of a dead stop and things like that but you must kinda baby it when slowing and speeding.
Bottom line; I love driving mine cause its a convertible and it looks great, handles pretty good and drives "OK" in terms of the tranny. Would I rather have a 5 speed AT. ABSOLUTELY!! If it had that old tranny, it would be my favorite car of all time and I've owned an Audi A4 , G35, 300 C, M37....
This is my last Infiniti as well. Too bad, because otherwise it is a great car for the money.
Sometimes I don't know if the dealer is sympathetic or thinks I am a crank. I sense the latter. While this issue is definitely in my head, it doesn't mean that it isn't real. I don't know what vibes you get, and perhaps it doesn't matter. But for what it's worth, you definitely aren't alone, or imagining the way this vehicle drives. I feel really bad for you because you are stuck for a long time, unless you want to get zapped by breaking the lease.
Lousy feeling, does not happen in BMW 3 series my wife has nor in the G35x I had previously. Infiniti needs to own up to this problem and find a way to take care of it or their sales will take a hit when word gets around.
With a sporty car, I was hoping the manual mode would be responsive. My technician suggested I turn VDC off to see if it makes a difference. In some ways during manual mode, it works. In other modes, the computer is saving gas by neutering the accelerator. I hate it.
If I am punching the accelerator, I expect RPM until I ease off. What I find is that to some degree I get RPM, however, almost immediately - 2 seconds - the transmission dumps down the 500-1000 RPM - which at lower RPM always puts it to 1000 to 1500 RPM - which leads to that annoying vibration on the gas pedal.
The one saving grace right now is that everything else with this vehicle works wonderfully and I always get stares when I am driving around. I am the type of person who is terribly observant so these transmission quirks add up if I am stuck in traffic.
I have tried to pass along my experiences and the tech (late last month) indicated there may be a new flash coming soon. I am crossing my fingers because this is a lease, and I don't want a transmission dying on me.
If someone hears of the late 2011 flash, please let me know.
On the forum, under the thread Reprogramming the transmission where the posts allude to the TSB in January 2011 which offers a reflash of the ECU/TCM, many pages into it, one member posted a link to a magazine article which cites the many complaints about the 7 speed auto tranny. The complaints are bringing the quality survey numbers DOWN for Nissan. Tere has been "talk" of a better fix, But None Have materialized to date. i continue on my quest to keep Bitching until they take the car back, let me off the hook of my lease with No Further obligation.
Nissan rushes to grapple with poor quality survey scores
"Nissan will be launching a new quality plan in November, but Automotive News has the scoop today.
The most immediate change in Nissan's quality approach is a shoot-the-messenger measure requiring dealers to present car buyers with a two-page quick-reference guide that's part of 2012 owner manuals. The manual insert will seek to address some of the common threads that have cropped up in J.D. Power survey results. Nissan will also be addressing some of the most frequent customer complaints, like poor shift quality from its new seven-speed automatic transmissions used in Infiniti products. Nissan tells AN that it is already upgrading the software in the transmissions."
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