The instrument panel told me that I lost engine power. The error message says "engine power reduced/service traction/service ESC". my car lost power from ex: 40 mph to 30 mph, and couldn't go above 50 mph depending on the grade of the roads. It would climb speed very slowly. This has happened three times in two weeks. I had to drive with my hazard lights on until I pulled over safely. I would have to shut off the car for a few minutes. Sometimes it wouldn't totally reset; sometimes it would. It comes back on unexpectedly.

- Hammond, IN, USA

Vehicle shut down while driving on I 84 on route to worcester, MA. Had to coast with no power steering and avoid a truck to get over to the side. Engine started after five minutes and ran for another hr. Luckily this time, stopped for fuel and engine would not start again. Had to be to to dealer and was advised fuel pump had failed.

- Westerville, OH, USA

I bought my 2011 Malibu ltz in April 2011. Since I bought it I have noticed, consistently, the car revs extremely high when shifting between gears while accelerating. It often times struggles to shift between 2nd and 3rd and 4th gears. The car is also rated to get up to 33 mpg highway, average of 25. I drive about 90% highway and backroads and am only getting an average of 23.3 mpg, which is the city rating. This car has a 6 speed auto and was supposed to do better on gas than the last few models, but my 2009 Malibu with a 4 speed auto did better than this car does. Initially I figured I was doing bad on gas because I tend to be a leadfoot driver, so I made significant strides to reduce my overall speed and quick accelerations. After about 4 months now of driving slower and safer I have not seen any change in the mpg. I am about to make an appointment to get the fuel system checked out. I also have the automatic starter in my car and it has died at 25,000 miles. I don't know if this is average battery life span for it or if it is an issue, so I will be getting it checked out too.

- Bealeton, VA, USA