My vehicle has been a nightmare. In January I visited the dealership because my heater was not working. At that time I was told I would need to replace my battery soon that it had some leaking acid. Three weeks later I replace the battery. At that time the dealership installed a new battery and sent me on my way. Ive spent thousands since then repairing what the dealership described as a electrical nightmare. I also have told the dealership several times that there are transmission problems with my vehicle. I insisted they drive with me and although the transmission issues have been acknowledged, the dealership has been busy repairing the electrical damage of the battery, the have never touched my transmission. I still have transmission problems. My car hesitates and doesn't accelerate causing me to almost wreck several times. I also have had several ignition problems with my vehicle. One occasion my vehicle would not turn off. The key was in the off position but the car remained running for several hours until the battery was dead. Anther occasion I was pumping gas and the vehicle was turned off. My two young children were in the vehicle and the car started cranking itself. It attempted to start three different times. My car stalls at red lights and will decelerate in the middle of heave traffic. I am frightened to drive my vehicle and fear for me and my childrens safety. I have contacted GM several times and have had my car in for repair numerous times. My salesperson advised me to file a lemon law report and my mechanic described my vehicle as an electrical nightmare. No GM rep can explain why my vehicles battery would have caused this much damage being my car was less than 2 years old. Please help.

- Pensacola, FL, USA

The battery go's dead when not started for more then2 days.

- Casa Grande , AZ, USA

For about a month now everytime I go to park my car my shifter get stuck and I am unable to put my car in park or take the key out. I went to the dealer ship and I was told I could spend $150 to get it looked at & then spend how every much money it would be to fix it. I don't have that kind of money for that at the moment but now its to the point where I cant even drive my car at all because the shifter always gets stuck and I cant get my key out to park or put it in park drive reverse etc...... ! ! ! I have seen that a couple people are having this problem so its not just my car. But since it gets suck I can be driving down the road and hit the shifter by accident and it will move the car into another position because it doesn't click witch means I can go from driving to it being thrown into park or reverse in seconds. That's going to cause a accident! I need this fixed I drive with kids in my car on a daily basis.......... their is something wrong in the shifter.

- Baltimore, MD, USA

A bad smell like rotten eggs, keeps coming out of the ac/C vents and the engine of the car. I changed the air filter and everything but nothing happen the smell does not go away.

- Los Angeles, CA, USA

The contact owns a 2012 Chevrolet Sonic. The contact stated while making a turn at approximately 10 mph, the vehicle stalled without warning. The failure caused the contact to crash into a telephone pole. There were no injuries. A police report was not filed. The vehicle was not destroyed. The vehicle was not taken to a dealer. The manufacturer was not notified of the failure. The approximate failure mileage was 8,500.

- Akron, IN, USA

On or around December, 2014, the shift cover would not attach permanently. On or around March 10, 2014, the electrical access plug did not operate. On or around March 6, 2014, my mother was driving around 45mph, and we hit an elk. No airbags deployed.

- Grand Canyon, AZ, USA

The contact owns a 2012 Chevrolet Sonic. The contact stated that while driving at various speeds, a chime sounded with the illumination of the engine oil pressure warning indicator. The failure also recurred upon starting the ignition. The vehicle was taken to an authorized dealer for diagnosis. The technician informed that the oil pressure indicator switch would need to be replaced. The vehicle was currently being repaired. The manufacturer was notified of the problem. The approximate failure mileage was 44,500.

- Altoona, WI, USA

After manually turning off the radio, turning off the car, removing the key from the ignition, exiting the car, locking and arming the car's alarm, the radio will turn itself back on. In some cases it has done this before we have even walked 20 feet from the car, in other cases it happens up to 2 hours after exiting (and locking) the car. It happens more than 75% of the time. Shortly after the first time we observed the symptom, the check engine light came on and stayed on, but the dealership claimed it was no longer on after I dropped the car off (and it was definitely on when I exited the still running car for them to drive inside) and that there are no error codes in the history. They claim they cannot reproduce the radio issue.

- Countryside, IL, USA

I purchased my Sonic in April of this year. I was initially wowed by the avg mpg I was attaining based on the avg reported by the car's computer. After a few fill ups I realized I was adding more gas than the mpg would indicate. Since 6/21 I began recording the difference reported by the computer at each fill up & my manual calculations. The difference thru 10/17 averaged 5.6mpg (a low of 2.3 & a high of 8.4 mpg) always higher. I took it to the dealer & was told there was nothing they could do & that the svc mgr's Cadillac had the same problem. In fact, I was told by him that the computer's figure was the "mpg the car was getting at the moment, not the avg since last fill up. I've called Chevrolet, told numerous people about the problem. I was promised callbacks & have never gotten them.

- Sunrise, FL, USA

Was driving and smelt something burning and thought someone was burning something and I drove thru the smoke and so I kept driving and a mile down the road I kept smelling something burning so I pulled over and looked around in my car then got out and checked under the hood and nothing so I went ahead and drove home then looked around again and didn't find anything so I just went inside then the next day after it rained I seen that both my fog lights had moisture in them and when I got down and looked both my fog lights are all burnt and melted inside, I guess it got so hot it melted the light housing and all that.. it got so hot its black inside my fog lights and U can see where it got hot and the plasted melted and ran down to the bottom on the inside of my fogs.

- Morgantown, KY, USA

Accessory cigarette lighter was being used to charge a car phone while on a trip out of state, when we stopped to get gas and had the car off and returned it on after filled with gas all the gauges on the car went crazy dropping all the way down to zero on all gauges even though the car was working properly during this time, even the speedometer showed zero, I dont know if it was because we charging the phone or what caused it. But this only happened once so far.

- Pontiac, MI, USA

Idles roughly, idle increases dramatically while the car is at a stop, and the engine stalls very frequently, regardless of temperature or weather conditions. On start-up, or while stopped with the engine running, the idle will become rough and vary between 200-3,000 RPM, but not stall. Also at times, while stopped, the idle will increase from normal, smooth idle up to about 3,000 RPM for approximately one second, then drop back down to 750 RPM (normal idle speed) without touching the accelerator. The engine will also stall at parking lot speeds when I push in the clutch to shift from 2nd to 1st gear. The car also often stalls when pulling out from a stop. A re-start cannot be attempted for approximately 3 seconds. Turn the key, nothing happens. I've owned this vehicle (1.4L turbo engine with 6 spd manual transmission) since 05/21/2012, and over 8,000 miles later, it still idles roughly and stalls every time I drive it. The dealerships say, "cannot reproduce. Operating to specifications."

- Knoxville, TN, USA

Radio randomly turns on when car is shut off. Last night it turned on 13 times. It activates the full electrical system in the car. Won't shut off unless car is started and xm radio is tuned to fm and shut off. Then if your lucky it may stay off. I have been reporting this to the dealership in Vermont and Chevrolet for 8 months. They tell me it is not an issue. They tested radio said it works fine. It is worse when cold out. Radio randomly turns on. Will not shut off.

- Bristol, VT, USA

Stalls easily and frequently when pulling out from a stop and is then difficult to restart, or I must wait about 5 seconds before I can attempt a restart. Uneven idle most of the time. Dealer blames me for the stalling (says I'm not used to the manual transmission, but many are complaining on the online forum www.sonicownersforum.com) most importantly, yesterday (08/04/2012), the fully warmed 1.4L turbo engine in my Sonic rev'd to from idle (750 RPM) to exactly 3,000 RPM then back down to 750 RPM (while 6 spd manual in neutral, clutch fully depressed, right foot firmly on the brake and not touching the accelerator pedal. I had stopped at the end of a driveway and was waiting on traffic so that I could pull out. My right foot never moved from the brake pedal and was in no way touching the accelerator pedal. The idle speed increased to 3,000 RPM all on it's own and back down to idle, much to my shock and amazement. Thankfully, I was fully stopped. At only 3,070 miles and not yet 3 months of ownership, my new 2012 Sonic is beginning to have a mind of it's own.

- Knoxville, TN, USA

I purchased my car brand new with 3 miles on it in November 2011. When I hit around 7500 miles I noticed the car when stopped on a hill would drift backwards - when I got to 7800 miles the whenever I was in traffic traveling around 5-13 mph I noticed the car would not shift on it's own the RPM's would shoot up and the tach would rev but the car would not go. I would need to put it in park and then drive and it would be fine. This happened almost every day for about 2 weeks. When going to park and put it in reverse to back in the car would hesitate about 30 seconds before it would move.. I contacted my dealer and took it in. Onstar said they did not find issues when they checked. The dealer corrected the problem.. on the engine control module they had to reprogram it with sps ( not sure what the means ) and it now works like the day I pulled it off the lot.... they also left me know if there are any other issues to contact them right away and they would get it right in. On the electrical - the driver window button sticks and window will go up and down on it's own until you get the button un-stuck -- this is also being repaired by the dealer however they had to order parts.. when they come in is to be determined.

- Palmerton , PA, USA