Car will not shift into gears. The vehicle will not allow me to enter the gear I desire, causing the car to suddenly loose momentum leaving me in a very dangerous situation in traffic. This has happened to me numerous times crossing intersections and entering the highway almost causing an accident. The car has a manual transmission. I have had ongoing issues with this vehicle since I purchased it, and I cannot drive the car with the confidence that it is safe.

- Boca Raton, FL, USA

My daughter's 2012 Mustang would lose power at around 40 mph when accelerating. The engine light would light up and the car would idle very rough when car was stopped. Problem was diagnosed as a throttle being stuck open and the throttle housing was replaced which solved the problem.

- Boerne, TX, USA

The contact owns a 2012 Ford Mustang. The contact stated while driving approximately 55 mph the rpms increased and the vehicle failed to accelerate into fifth gear without warning. The vehicle was taken to a dealer who stated there was no failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure and current mileage was 33,300.

- Norfolk, VA, USA

TL- the contact owns a 2012 Ford Mustang. The contact stated that while driving approximately 55 mph the vehicle revved up and would not accelerate into fifth gear. The failure occurred intermittently at different speeds. The manufacturer was made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 29,000.

- North Wales, PA, USA

The contact owns a 2012 Ford Mustang. The contact stated that while driving 50 mph and attempting to shift gears, the vehicle grinded while shifting. The vehicle was taken to the dealer for diagnosis but they were unable to duplicate the problem. The vehicle was not repaired and the manufacturer was notified, but the problem persisted. The approximate failure mileage was 7,000.

- Pinellas, FL, USA

Transmission whine/grating with clutch engaged traveling at speed. Frequent grinding heard/felt going into 3rd and 4th gears mostly when cold. Difficulty shifting into some gears. Clutch will not reengage over approx 4,000 RPM.

- Randolph, MA, USA

Vehicle turned right from a stop, onto a Texas state highway. Shifting manually from first gear to second gear, the vehicle went out of control (apparently due to loss of traction because there was a coating of fine sand on the tires). The vehicle crossed 3 lanes of traffic, and in doing so, went into a roll-over, reports stating the vehicle rolled 4 times, and striking a utility poll that stopped the roll. The utility poll was struck on the passenger side, by the windshield pillar, causing terrific damage and cave in. The utility poll was broken, almost snapped in half (the utility pole was replaced). While there was no passenger other than the driver, the only airbag in the car that deployed was the driver side curtain. The severity of the crash would indicate that all of the airbags should have deployed, to shield the driver and potential passengers. Driver also went into the windshield, the steering wheel bag not deploying. Potential back seat riders should be protected in such a devastating crash as well. Photo evidence would indicate all bags should have deployed. The driver had not disengaged passenger bags (driver/owner doesn't even know how to disengage passenger bags). On one occasion a few weeks before the crash, an info light message came on for a few seconds while operating the car, stating the passenger side airbags were off. I couldn't figure out why. I had not turned them off. I stopped the car and turned off the engine. After restarting the car the message had disappeared. Major damage to the degree my car was destroyed should deploy all airbags.

- Houston, TX, USA

Gear grind in 5th, this transmission is inconsistent. Inconsistent engagement into 5th.

- Central Islip, NY, USA

Vehicle has continual issues going into 1st and 2nd gear. Manual transmission. After 11 months of this issue the clutch burned out, I was in the middle of the intersection. I am not stuck with a repair bill because Ford or the dealership will do anything.

- Urbandale, IA, USA

I had two incidents of unintended acceleration in my 2012 Ford Mustang GT automatic transmission premium pkg. These two incidents occurred on the same day March 5, 2013. The first was after I picked up my car from its garage of several weeks at lunch and drove back to work. I had gone about two blocks from my garage and was braking to slow down to make a right hand turn when the car down shifted and accelerated by itself while I was pressing the brake pedal. I was going about 5 mph when this all started. It lasted for about 3 seconds and then the car released and stopped the acceleration and I was able to slow down and make my right hand turn. I continued on back to work and complained to my co-worker about what had happened and how I was beginning to become afraid of the Mustang. He is my witness about this happening before the second incidence occurred. Later on I left work to go home and on the way home it happened again a second time only this time much stronger. I was in bumper to bumper traffic going under interstate hwy 820 bridge in fort worth to go under the bridge after going through a traffic light on each side to make a left hand turn to get on the West bound IH820. Well because of the traffic you have to stop at one light on the South side of the bridge and then again stop to get through the second light on the North side of the bridge to turn left. Anyway there was a large semi-truck hauling rocks in front of me and I stayed back about 60 feet so as not to get the rocks on new car. He went down to the other light which was red and stopped I was going about 5 mph again and started to brake way back from him because of the rocks and the red light. The car again accelerated on its own while I was pressing the brake pedal. I fought it the whole way but it would not let release till 15 feet from truck. I then crashed. I could have been killed!

- Fort Worth, TX, USA

Shifting into 1st, 2nd and 3rd gears has become more difficult over the past few months. Sometimes it grinds, and sometimes it won't even go into gear. I have been driving manual transmission cars for 15 years, and something is really wrong with this transmission that needs to be fixed. I had the vehicle at the dealer 3/4/2013, and all they did was change the transmission fluid and said it was resolved. Drove it home and the problem was not resolved, as it is still difficult to shift gears. Ford needs to come up with a fix immediately and fix our Mustangs.

- Happy Valley, OR, USA

(2nd owner) ever since I purchased this vehicle I have had nothing but problems with the shifter/ shifter linkage. The vehicle misses shifts and won't engage mainly during 2nd-3rd shifts. For a performance automobile this is the worst clutch and shifter combination I have ever seen. Shifter constantly will not engage and on a number of occasions has popped out of gear due to not being fully engaged. Linkage sounds clunky and is not smooth in any way.

- Virginia Beach, VA, USA

V6 automatic shifting problems. Vehicles transmission has hesitation upon acceleration. Often while merging onto highway, or changing lanes transmission does not engage. Upon acceleration RPM's will rise but vehicle does not increase speed. Ford service department says vehicle is operating as it should.

- Tiverton, RI, USA

Transmissions 3rd gear synchronization plate failed. The car is locked out of that gear.

- Groves, TX, USA

I drive a 2012 V6 Mustang 2dr coupe base.I was merging into traffic onto I40/I85 when tried go to second gear when it would not go. I tried forcing it but was afraid I would snap the shifter shaft so I was forced to slow and then it finally went into 2nd gear. This was the other day 1/12/13. So this is not first time it has happened it has happened several times same thing when you get on the pedal this happens and on occasion it will go into 2nd but will grind.this has happened maybe 10-20 times both grinding and just not going into 2nd gear. So I know this is an ongoing problem with Ford and the Mustangs of 2011 and 2012 from other Mustang owners I have talked to either on forums or in person. When I attended Mustang week in myrtle beach SC in 2012 several people had this issue as well. So what can I do? the dealers that I have brought this up to in my area have told me it was the way I push in clutch ( classic response) I find hard to believe since I am 34yr and have had 9 vehicles in my life all manuals and I shift all the same through every gear. My hands are tied cause now my warranty is out. I have my 4yr son who rides with me alot and I am a daily driver of this vehicle and I am concerned of my sons and my safety. Please help.

- Burlington, NC, USA

The problem with the vehicle started when I tried to start it. When I turned the key the vehicle took a few seconds longer than usual to start up. As I began driving down the highway my vehicle wouldn't shift gears out of 40mph and caused the engine to have high RPM. When I turned off the engine at a gas station and tried to start it back up. Vehicle would not start and I had to get it jumped. Vehicle still doesn't shift gears. This vehicle is only 1 year and 1 month old since I purchased it.

- Savannah, GA, USA

My nephew lost control of his six speed 2012 Mustang while driving on mountain road and was killed. He was downshifting into left corner or road then road turns right uphill (like an "S" shape). Perhaps the power train had an issue.?

- Simi Valley, CA, USA

Today is Nov. 16, I have my car at the dealer now because it won't shift into 3 gear at red line and the fifth gear syc is out, Ford says they can fix problem, there pulling the wool over your eyes, this is the second time I had my car at the dealer, they put another clutch pedal and spring in it to solve 2 to 3 shift. Took it out same problem, bought a expensive replacement shifter top brand still has problem, so it has to be the tranny. Don' let them bs you there is a manger problem when entering traffic or trying to pull out to pass this tranny won't respond and your in trouble with the other traffic.now there fixing the syc and the 2 to 3 shift again, somebody has to investigate what is Ford hiding. Look on the web sites there are hundreds if not thousands of complaints of the same 6 speed, thanks for letting me blow of some steam, [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Glen Rock, PA, USA

The contact owns a 2012 Ford Mustang GT. The contact stated that the manual transmission failed. The contact stated that when she attempted to shift from first to second and from third to fourth, the gear shift would get stuck and she would have to down shift and try again. The vehicle was taken to the dealer who was unable to diagnose the failure. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was 12.

- Branson, MO, USA

Transmission fluid leak from bell housing. Transmission fluid running on exhaust system can cause fire. This part is made in china and is poorly made.

- Palm Beach Gardens, FL, USA