I am having problems with the transmission shifting from 1-2-3 when cold. The transmission does not want to go into 1st or 2nd without grinding and will grind an pop out of 3rd when trying to shift into it sometimes. I have been to the Ford dealer and was told that Ford knows about the grinding issue in the Mustang but will do nothing to fix it. I was told by the Ford service advisor that Ford was doing a fluid change to a heavier trans fluid and now they have stopped. Now I am left with a brand new Mustang that grinds the gears every day.

- Noblesville, IN, USA

When downshifting in the manual transmission version of this vehicle, the car doesn't slow down on any decline and instead accelerates (without touching the gas pedal). Also, while slowing down on a flat road (at 1,500 to 1,700rpm) the car accelerates by itself and fights the brakes while in gear.

- Woodland Hills, CA, USA

Stopped vehicle in parking lot after traveling approximately 10 miles. Placed the car in park for about 10 minutes, then attempted to put in reverse. Shifter was stuck in park. Had to have towed to dealership.

- Shreveport , LA, USA

The contact owns a 2014 Ford Mustang. The contact stated that the engine RPM's increased but the vehicle would not accelerate. The vehicle was taken to the dealer who diagnosed that the transmission wiring harness was faulty. The vehicle was repaired but the defect recurred. The vehicle was taken back to the dealer where it was diagnosed that the power train control module was defective. The power train control module was replaced but the defect recurred. The manufacturer was not notified. The failure mileage was 660.

- Pataskala, OH, USA

While driving the Mustang (which is a manual transmission) I noticed that the speed of the car doesn't decelerate when I take my foot off the gas pedal. The car is given gas (more than an idle amount) when I do not depress the gas pedal. It happens in all 6 gears but it's most noticeable when in first or second. Also, while the car is in gear, the engine fights to slow down while depressing the brake pedal. This doesn't happen every time but when it occurs while in a parking lot with people around it becomes a serious safety issue.

- Woodland Hills, CA, USA

Failure of front drivers side lower control arm, failure of driveshaft, failure of rear end and suspension. Symptoms' lower control arm- banging noise that sounds like the strut had no fluid. Driveshaft banging noise as if the shaft splines had stripped or cv joint loose failure was caught before it damaged the car. Rear end, whining noise and banging noise from suspension upon take off, manual trans car. Eventual lock up of rear end. Car uncontrollable wondering from rear of car. Ford only recognizes the control arm as an issue, and has a recall. Numerous complaints to Ford for the driveshaft and rear end issues. V6 and V8 cars with manual trans.

- Brmerton, WA, USA

The contact owns a 2014 Ford Mustang. The contact stated that while stopped with the vehicle engaged in the accessory mode, she was able to move the gear shifter into reverse, causing her to crash into another vehicle. The contact attempted to apply the brakes but they did not respond. The contact was not injured. A police report was not filed. The vehicle was taken to the dealer for diagnosis. The technician stated that the brakes would be inspected but the vehicle seemed to be functioning as designed. The manufacturer was not made aware of the failure. The vehicle was repaired for the body damages. The approximate failure mileage was 1,600.

- Tempe, AZ, USA