While accelerating from a stop, my vehicle loses all power temporarily. Throttle modulation does not increase RPM. At times the vehicle will jerk forward and back as if power is being put down then stopped abruptly. One time I had this happen, my lights, gauges, power steering, and engine power all went away. It fixed itself after about 15 minutes of trying to figure out what was happening. Very dangerous and scary experience when this happens on the road.

- Mullica Hill, NJ, USA

The contact owns a 2016 Cadillac Cts. The contact stated that he was an authorized technician at latin motors (3175 nw 37th St, miami, fl 33142). The contact diagnosed that the vehicle was losing freon, which caused the air conditioner not to function. As a result, the air conditioner condenser needed to be replaced. The vehicle was not repaired. The contact was concerned due to the vehicle being used in a hot climate state. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline. The approximate failure mileage was 13,857.

- Miami, FL, USA

The contact owns a 2016 Cadillac Cts. While driving at a low rate of speed or stopping, the vehicle made a clanking sound and jerked with a loud noise. While shifting gears automatically, a loud wind noise could be heard through the door jams of the front driver and passenger side doors. Also, the instrument panel lights would fade in and out without warning, the outside temperature display was incorrect, and a tapping noise could be heard coming from the engine. The vehicle was taken to rydell Chevrolet Buick GMC Cadillac of grand forks (located at 2700 S Washington St., grand forks, nd 58201 (701) 772-7211), but the failures could not be duplicated. The front driver and passenger doors have been repaired several times, but the failure recurred. The manufacturer was notified of the issues and referred the contact to NHTSA. The failure mileage was approximately 100.

- North Dakota, NC, USA

The auto stop/start cannot be safe. I almost got T-boned in my first several hundred miles in a new car with this feature. I was at a complete stop and needed to make a left across traffic. I did not realize the delay would be that great and almost got T-boned turning across traffic. The engine hesitates when you're stopped and moving from the brake to the gas. This fraction of a second has to make a difference...the only thing has to be whether it is significant. When turning left across traffic (T-bone) or turning right into traffic (rear end), a fraction of a second is huge. Even if the driver gets used to this over time, friends and family that drive the car too will likely not be accustomed to this delay. Would like to see comparison of T-bone victims and rear end victims of accidents of people with auto stop/start vs drivers who don't have it. Car also lurches when starting up and putting it into gear.

- Chevy Chase, MD, USA