Adaptive cruise control unavailable randomly occurs while driving using adaptive cruise control. Presents a large danger of hitting other vehicles if the adaptive cruise control is used to come to a complete stop as it will randomly disengage while coming to a stop. Cruise control only works 4/10 times attempted and was "fixed" by the dealer with less than 500 miles on the odometer. However the problem recurred within a day. Looked it up in forums and it is not an uncommon problem. Holding foot under the brake pedal allows cruise control to work but is more dangerous than randomly cutting off. No one in Volt forum has gotten a complete fix to date. When they do I will be getting mine repaired armed with the correct information. But it is dangerous.

- Laurel, DE, USA

Like others, including the incident in rancho cucomonga, ca on the same day, April 25th, I was driving on the highway at high speed. I was in the carpool lane on the 210 freeway. I think I also was told to put the car in park. I lost the ability to accelerate on at a very dangerous time, while I was the furthest to the left in the late afternoon. Miraculously, there was only 1 car quite far behind me. So, after deceleration was forced upon my car, I began to steer the car to the right through 5 lanes - one of the widest parts of the highway at that point. Here is what I now think. I have been through loss of power in my 2014 Volt. I had accidentally turned it off while being on the highway. They fixed that design flaw in this 2017 model. I have shared my theory with GM. GM/Chevy has 3-way called me with the "stolen vehicles dept". they aggressively describe how they won't issue a slow-down through the on-star unless they have a request through police, the police are behind, the lights blink, etc. But, they're reluctant to share what happens next. They've been reluctant to share how they track your vehicle through the VIN and gps tracking. They're reluctant to share that this system can be hacked. It is evident that much can go wrong once the ability to control your car is placed in other's hands -- who aren't in the car driving it. The dealership could see the code of the slow-down. Of course they were surprised. This wasn't just a "failure". this is a "feature" in the car...but someone else used it without our permission. I want the on-star control disabled in my car!!! it could have killed my daughter and me. It could have killed the others who reported a similar situation.

- Altadena, CA, USA

I purchased a new 2017 Chevrolet Volt equipment with automatic parking assist. On November 1, 2017, I was driving on bath street in santa barbara. I decided to park on bath at pueblo street. The first time, I engaged the apa feature to assist with parallel parking, I followed the instructions on the dashboard. After coming to a complete stop, I followed the direction to shift the car into reverse. The moment I completed the shift and I lifted by foot from the brake, the vehicle accelerated unexpectedly in reverse at a high rate of speed. The steering wheel turned to the right, and the car continued to accelerate out of control until it had jumped the curb and sideswiped a telephone pole. I had the vehicle towed to a Chevy dealer and filed a claim for product defect with General Motors. General Motors has subsequently declined the claim.

- Santa Barbara, CA, USA

We bought a new 2017 Chevy Volt at the end of December 2016 and had our first issue in early February 2017. What happened that first time was on (2/3/2017) while driving through traffic the car without warning turned off the electric wheel motors and would not allow us to power the car properly to get the car to the berm. We were nearly were hit twice while trying to steer the car off of the interstate highway as it decelerated. The car was completely disabled an needed towed back to the dealership. After the dealership had the car for a week they returned it with the explanation that the car needed to do software updates and they were too large to do over the car's satellite system ' but they never gave us any indication of how we would have been informed of the need for such an update. We then had another near accident today (4/6/2017) on the same highway and we were nearly pushed up under a semi while trying to maneuver off of the highway at 75 miles an hour. Again, the car without warning shut off the electric wheel motors and warned us to 'put the car in park'. it happened in exactly the same way as in February but no warnings had been issued for our car and we almost had a horrible accident. My concern is for my family and colleagues safety at this point and I don't want anyone driving in this car. I hate to think of what would have happened today if my daughter, who is a brand new driver, would have had to deal with the same situation sandwiched in by two semi-trucks and with a car trying to pass on the shoulder around her ' it could have been far worse. I am in several Chevy Volt groups on facebook and people who loved the generation 1 of these cars are having major issues from battery packs dying, to drive train issues, to speed control problems and more where people are having major system pieces replaced 2-3 times in the first few months they own the cars.

- Fort Collins, CO, USA