My automatic transmission does not shift properly. There are constant delays in shifting. Upon any acceleration, my vehicle will fail to shift for up to several minutes. During that time the engine will rev up to 600 rpms before finally shifting. This happens every time I accelerate quickly with every gear. Absolutely impossible to pass other cars or speed up quickly. All shifting is clunky and vehicle often suddenly downshifts while driving on an open highway and maintaining a speed of 55mph to 60mph. Also downshifts suddenly during normal stree driving. Vehicle will not go any faster than 75mph-even on a steep downslope. I can floor the gas pedal and car simply will not go faster than 75mph. I must switch to sport mode to go any faster, but then average rpms are 300-350 and vehicle uses too much gas. I have owned it only 30 days. Purchased from a dealer. One previous owner. Only 28000 miles odo. Idles somewhat rough and slight knocking heard from engine while outside of vehicle. Have had it back to dealer who denied any problem, but gave me no paperwork to tell me what was checked. Taking it back tomorrow. Problems are a serious danger while driving.

- Reno, NV, USA

Engine is very shaky when stalled at stop lights, etc. Service light recently came on and car was taken to the dealership for evaluation as it is still under warranty. The cooling fan needs to be replaced but is on a national backorder with no eta. Car can no longer be driven in traffic as it quickly overheats.

- Jacksonville, FL, USA

The contact owns a 2016 Fiat 500X. While driving various speeds, the vehicle suddenly experienced severe jerking and hesitation. The vehicle was taken to the dealer (crown Chrysler/Fiat located in chattanooga, tn) where the PCM, tcm, and transmission were reprogrammed, but the failure continued. The manufacturer was not notified of the failure. The VIN was invalid. The failure mileage was 2,000.

- Chattanooga, TN, USA

The contact owns a 2016 Fiat 500X. While driving various speeds, the gear selector erroneously switched from drive into neutral, which caused the vehicle to lose power. The vehicle was taken to the dealer (rick case Fiat/Chrysler of davies, Florida), but the cause of the failure was unable to be diagnosed. In addition, while driving in reverse, the brakes malfunctioned, locked up, and the vehicle would not move. The vehicle was taken to the dealer where it was diagnosed that the brake pads were faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The contact was informed that the VIN was not included in NHTSA campaign number: 16V529000 (power train), although the failures were identical. The failure mileage was 700.

- Coral Springs, FL, USA

Vehicle goes into "limp mode" anytime wheels slip, untill computer clears no throttle or motion, vehicle is inoperable for over 5+ seconds and then accelerated at whatever position throttle is at. Dealer and mechanics say all new Fiat 2 and 4wheel drive all have this issue and they cannot fix. I pulled out into traffic, wheel slipped and went into limp in middle of lanes untill it cleared and took off at half throttle and almost got smeared by traffic. Dealer says all Fiat have same problem and only solution is to give a lot of lead time before entering traffic and try not to accelerate as to make wheels slip when road conditions may cause slipping. This has happend pulling out into traffic and while on ramps, hills. If on curve or hill vehicle will go int "limp mode" and will just slide down hills and through curves!!!

- Boise, ID, USA

My 500X that I purchased in July of 2016 has shifted gears to the + symbol 4 different times while im driving. It started in Sept but I thought I had it a bump or something. It happened again 3 times I did go back to the bettenhauser dealer for service 3 times and they said I had to not turn the car off and get to them before they closed because they could not see codes to the problem.at this point in time they gave me a loaner to drive for about a week while they drove the car. They said they found nothing. I took my car back 2 weeks ago and I drive with a prayer that it doesn, T happen again while im in traffic as it did before scaring me to death. Do you have any suggestions. I see no recalls on this problem so far but something is wrong with my car. Thank you. All this happened when I was in traffic on the city streets of Chicago. I did come very close to having a terrible accident three times.the service dept has incorrect mileage on dates I was in for this problem. Correct date for 10/18/16 mileage 2,378 for 10/26/16 incorrect mileage 7,531 correct mileage for 1115/16 2,728.

- Hazel Crest, IL, USA