The vehicle experiences a severe delay in throttle and transmission response, to the point of endangerment. When driving at 60-65mph and commanding passing power, the vehicle normally will bog down as the pedal is depressed, then disengage the gear, wait up to 3 seconds, rev up 500-1,000rpm and then engage the gear and begin moving forward (at which point it is within a few hundred RPM of redline and bounces off of the fuel cutoff.... while in drive, not manual mode). The transmission also shifts harshly up and down randomly. Upon a cold start, the vehicle nearly stalls when coming out of a parking garage with an incline, then proceeds to idle at 1,800rpm and push the vehicle forward with nearly enough thrust to cause a collision if the brake pedal is not stood on. The vehicle has almost stalled on me while driving on flat ground, a handful of times (sometimes when I turn on the rear defroster, sometimes just coming to a stop). Additionally, there is a pulsating that can be felt throughout the car (most notably through the brake pedal) and a grinding noise coming from the engine bay. The vehicle has been brought in to power Chevrolet in mesa, Arizona where these concerns were brought up, including the concern for safety, at which point the ECM and tcm were reset to default values (which made the transmission even more horrible, due to deleting the adaptive values). I was spoken to like a child and given a printout explaining how an automatic transmission and auto-stop feature worked and told that the pulsating (which is widely acknowledged as a bad ac compressor part for this vehicle and was mentioned to the dealer when the car was brought in) and other issues were non-existent. I guess that I will have to wait for these parts to fail, hoping and praying that it doesn't kill me or my passengers in the process, in order to get these issues addressed.

- Mesa, AZ, USA

Engine seems to momentarily cutoff when accelerating after moving about 15 feet or less with accelerator in steady position from a stop after idling in gear. Dealer description hesitation, sometimes it does hesitate when pressing the accelerator but mostly seems to lose all power momentarily. Issue is repeatable and has been noted on at least two vehicles by this owner. This issue is a safety concern, no accident yet but could happen unexpectedly to a driver if not yet aware of the problem. Owner was told by service center GM is aware of problem and a possible software update may be available, unknown date of release as of December 2011. This owner believes all 2011 Cruze's have this issue, just have to be in the right circumstance and know how to reproduce it. If you have been told it is turbo lag do not fall for it, if this was the case it would happen all the time.

- Arnold, MD, USA

2011 Chevy Cruze manual transmission 6 spd. Random occurrence of speedometer spikes digital and needle (anywhere from 20-120 mph), volume on radio will also spike with this issue. When speedometer spiking the steering wheel will also unwontedly move 1/2 - 2 inches left or right every time which could distract/startle driver leading to a possible accident. Chevy refuses to look for a problem that "isn't there". as stated by dealership without code or a tech witnessing it. Occurrence happens when rolling at slow speeds (0-7 mph) or stopped with clutch engaged or slowly being released. Happens, 10-15 times+ a month. Has startled me several times once including me letting off the clutch and stalling the vehicle from being startled. Vehicle assembled: Lordstown, Ohio mileage when first noticing this issue: 78.0 current mileage, issue still occurring: 18,749. Seen dealership :3 times about current issue.

- Georgetown, KY, USA

Vehicle was in the park position, when the key was turned in the off position the car started to roll backward down a hill dragging my child with it.

- Tuscaloosa, AL, USA

The contact owns a 2011 Chevrolet Cruze. The contact stated that when the vehicle would hesitate when accelerating between 45-65 mph. The vehicle was taken to the dealer several times but the dealer was unable to produce any failure codes when diagnosed. The dealer performed a test drive and was able to duplicate the failure but there were no repairs. The failure mileage was 40 and the current mileage was 1,000. Updated 11/16/2011

- Columbus, OH, USA

When accelerating from a stopped position the vehicle has a two (2) second delay before it engages the transmission. This is very dangerous issue when entering a busy road from a parking lot or other stopped location. A two second delay can place a driver in a life or death situation. The vehicle was taken to an authorized dealer who was unable to diagnose the problem. They did mention that it could be "turbo lag" since it needs time to build up. They also stated that all software programs were up to date. It is still dangerous turbo lag or not. According to a road test conducted by consumer guide automotive this problem was a issue for them: "several test cars exhibited issues with the automatic transmission, including delayed response and slurred shifts. GM was aware of these problems and issued a fix that involved re-programming the transmission's software." It's obvious that this is not a software fix issue since all programs were updated on the vehicle and the problem still exists.

- Waxahachie, TX, USA

The contact owns a 2011 Chevrolet Cruze. The contact stated that while driving at various speeds, she would notice that the vehicle would hesitate or jerk forward. The vehicle was inspected by a dealer and they advised her that the tcm needed to be replaced. The vehicle was reprogrammed for the tcm yet the failure persisted and the vehicle became hesitant to acceleration attempts within moments of leaving the dealer. The vehicle was then taken back to dealer and they advised her that all of her particular year, make and model vehicle operated in that manner. The failure mileage was approximately 24. Updated 07/21/11 updated 3/20/12

- Orland Park, IL, USA

The contact owns a 2011 Chevrolet Cruze. The contact stated the transmission was reprogrammed, but the failure was not corrected when the vehicle lost power while accelerating at any speed. The brake pedal extended to the floor when the brakes were applied. The vehicle moved backwards while the brake was depressed causing the contact to crash into a vehicle. The vehicle was taken back to the dealer who did not replace any parts and advised the contact how the vehicle was designed. The failure mileage was 150,000 and the current mileage was 752,000.

- Austin , TX, USA