The morning after coming back from a trip I went down to get in my colbalt and found my left front tire flat. I got my manual out to read how to change the tire and changed it. We noticed the size difference in the tires right away, regular tire is P205/55R16 H, the spare is a T115/70D15 M. these are the original tires that Chevrolet put on the car. The manual said we could go normal speed. I drove a block to get the tire fixed and turned around and went back home. The car dipped horrible and dragged when I pulled back into my drive way. It also made rubbing sounds. It did not fill safe to drive. We took the tire in and had it fixed without the car, brought it home and put it back on car. I have been in contact with Chevrolet since then to see if it was an error on the spare. They have told me that it is the right spare, although a couple of the people that I have talked to thought it was bad to have a 15 inch spare with 16 inch tires. They also told me that what I need to do is if the flat is on the front I'm suppose to change two tires. They told me to put a back tire on the front and the spare on the back, which is not the direction in the manual. They told me I can go 50 mph and get the tire fixed as soon as possible. So now out on a busy highway they want me to change two tires and have the back of my car dip horribly. I feel this spare is unsafe because it is smaller then the tires it is replacing. It makes the car tilt so you can't drive at safe speeds not to say the damage you can do to your car. I leave in a rural area and some of the roads don't have enough shoulder to change one spare let alone two.

- Boardman, OR, USA

Wheel bearings on the left front went out in Feb, 2012 then in July, 2015 the right one went out. In all of our other cars we have owned we never had to replace a wheel bearing let alone two so we assume there must be a defect.

- Harwood, MD, USA

I began to smell gas after exiting the vehicle. I traced the smell to an apparent leak coming from the top of the tank where the lines from the fuel filter are routed over the top of the tank. I discovered the recall for fuel pump plastic part failures in warm weather states, also 2009 Cobalt, but, Georgia is not listed (I'll tell you it is a warm weather state). Also, in regards to another individual's complaint NHTSA id number: 10668977, I discovered my TPMS were backwards about three years ago when I had an unexpected flat. The low pressure indicated by the TPMS directed me to the wrong tire. One of the TPMS stopped working within days of driving the car off the lot. Other issues: 1) multiple times I have placed a small item like a phone in the passenger seat and the passenger air bag turns off - seems hyper sensitive, not nearly the weight of an infant 2) my front speakers don't play unless the weather is warm (wiring harness/connectors?)

- Evans, GA, USA

My tires consistently lose air at an accelerated rate. Despite replacing all tires, this problem persists. I have been told that replacing the rims will resolve the issue. I feel that this recommendation is premature given the age of the car. The rims should not have corroded so much to the point where I have to replace them after 5 years. I have to pump air into my tires 2 times a week to maintain a safe pressure for driving.

- Troy, MI, USA

I was on my way home and it was raining on the expressway but by the time I got to the city I live it had stop. I was exiting the expressway and was turning a left on the street I live on. I had made my turn at about 30 mph and after I had made my turn the car was straight for awhile then all the sudden the car acted up and the steering wheel or the wheels or something happen that made my car make a sharp U-turn going in front of ongoing traffic. My car went straight in front of a car and she didn't have time to stop so she hit me and we both went onto the island. I have no idea what happened but luckily we were both going slow that none of us were hurt but our cars were in bad conditions. I'm looking at 3,000 damage on my car, and probably 4,000 damage to her car. I want to say it was bc of the rain, but the road wasn't wet and I just got new tires and just got a oil change. I maintain my car very well so I have no idea why that would happen.

- Edinburg, TX, USA

Vehicle was being towed behind class a motorhome. Key was in the accessory position; transmission (automatic) was in the neutral position; fuse block:8 (ignition switch, pass-key III+) was removed to prevent battery drain; per vehicle manual for dinghy towing. Traveling on interstate 45; 95 miles South of dallas, tx. Nothing was hit when traveling. Both front tires blew out, subsequently ruining both front tires and wheels. There is no apparent reason why this happened. Was wondering if this may be connected with current safety recall on ignition problem on Chevrolet Cobalt. The key chain had three keys and the key fob attached.

- Lewistown, MT, USA

As I was driving down the street to turn into my parking lot I started turning the wheel left when I turned my steering wheel and brakes locked up and drove over the curb of my apartment complex causing my whole right side of my car $1300 worth of damage this is the second time this has happened to me first time no damage was done that was back in October.

- Youngstown , OH, USA

When I drive my car over 60 I get a sway side to side and I feel like its going to sway in to another car when I go by them. I had it in a Chevy dealership to have it fixed and they did nothing but put a pull in the car and it sill sways. I think it has to do with the rack in the car and or the electrical steering in the car. The dealership says " its been fixed in the first recall" well I am saying its not so I think it should be recalled again and fixed right this time....

- Williamson, NY, USA

The contact owns a 2009 Chevrolet Cobalt. The contact stated that all four tires were deflated. The contact also stated that the failure recurred several times. The vehicle was taken to the dealer where it was found that the wheels were bent, which allowed air to escape past the bead of the tire. The manufacturer was contacted but did not offer any assistance. The vehicle was repaired. The failure mileage was 10,000 and the current mileage was 27,000......updated 05/09/13 updated 05/31/2013

- Elmore, AL, USA

Vehicle is making weird front end noises, knocking, rattles, shakes in the steering column, vibrations when driving on the driver side behind the steering wheel and in the floor, tires are making a noise when driving like something is hanging.

- San Jose , CA, USA

Chevy Cobalt 2009. Two incidents involving the same model but different cars. Both rented from enterprise. Don't know what category to put the complaint in. Steering" braking? or something else" this model handles terribly on wet pavement. Doesn't brake well on wet pavement, and tires spin when starting from a stopped position. Incident 1. changing lanes on I270 md. Going about 50 mph. And slowed down to move one lane to the right. Going from a less used wetter lane to lane to the right, which wasn't quite as wet. Car spun out twice and hit the jersey wall twice. Then I was able to stop the car. Fairly heavy traffic, and no other vehicles involved, thank god. State police were on the shoulder for traffic going in the other direction across from me but did not come to the car. Incident 2. rented another of the same model. Whenever the street was wet, the car did not brake well. Seemed to be very short periods of not braking. When slowly starting from a stopped position, the wheels spun and then took hold. Could have easily been another situation for spinning out. Enterprise said there were no recalls. Insurance company raised my rates from $103 to $167 per month!

- Silver Spring, MD, USA