2012 Ford Mustang: complete transmission failure

Filed Jan 31, 2021 · Transmission · 17,000 miles · TN

Same as everyone I know high rev lockout, can't shift past 7krpms clutch pedal sticks to the floor. Gears are rough to get into normal. Will hear loud clunking when changing gears sometimes. Car has 35k miles I bought it with 17k miles and the issue has always been there. This needs to be addressed this could cause transmission failure and accidents if it fails on highways.

Filed Jan 7, 2021 · Transmission · 129,000 miles · CA

Tl* the contact owns a 2012 ford mustang. The contact stated while driving at various speeds, the gear shifter slipped into first gear without warning. Upon restarting the vehicle, the vehicle worked as designed. The contact called gosch ford temecula (26895 ynez rd, temecula, ca 92591, (951) 699-1302) however, the vehicle was not diagnosed nor repaired. The vehicle was taken to an independent mechanic where the contact was informed that the transmission failed to produce power and the first gear had ceased. The contact stated the failure was similar to the federal safety agency campaign number: 16v248000 (power train). The manufacturer was contacted however, no further assistance was provided. The failure mileage was 129,000.

Filed Oct 8, 2016 · Transmission · 61,499 miles · OH

2012 ford mustang transmission failure. At 61,499 the vehicle at a stop entering the roadway the vehicle lurched after a hard slam in the transmission the rpms went crazy and the vehicle slowly rolled into the roadway. The service wrench light up and the vehicle would only go 20 MPH. Towed to dealer and told the repair would cost $5600 - $5900. Service did not notify us of the service recalls. Warranty ended at 60,000.

Filed Feb 9, 2016 · Transmission · 49,000 miles · GA

I have a 2012 mustang gt with 6 speed manual transmission. I bought the car as a certified pre-owned car at about 2,500 miles. The car at that point had a dealer re-built transmission and my understanding is that it has 2nd through 6th gear replaced due to a manufacturers defect. Since that time I've had multiple transmission issues and the car now has about 49,000 miles. In early january, it became almost impossible to shift the car into 1st gear. It was very stiff and took a lot of force to get it into 1st. Shifting to 2nd gear resulted in a gear-mashing sound. 3rd gear sounded like a loud clunk. 4th through 6th gears were fine. These incidents became worse and almost caused me to have 2 different accidents by not being able to shift gears in traffic. I took the car to a ford dealership in the north atlanta, ga area and they looked at the car. Their transmission tech believed it was an issue with the synchronizers. The tech did not believe he had the expertise to work on this issue and referred me to another ford dealership. On 1/14/16 I took the car to the 2nd dealership and their tech agreed it was the synchronizers. That dealership took about 1 week to complete the repairs. After the repairs, the issue was not solved; loud sounds were coming out of the rear of the car. Over the past 2 weeks, they've ordered numerous replacement parts. As of today, 2/9/16, there are parts that are not available and are on national back order. The eta for the parts is now 2/24/16. I've read about similar issues other mustang owners with this specific 6 speed transmission have had and personally can say it is a major safety warning for the driver. These cars should be recalled and new transmissions inserted as a whole unit vs. Installing multiple parts. I also believe that this issue will cause me to experience diminished value at resale.

Filed Jul 7, 2014 · Transmission · 24,500 miles · IL

According to my ford dealership, the synchronizers between 1st and 2nd bears failed. I have had several issues with this transmission previously, causing the car to fail to shift while accelerating. This is incredibly dangerous, as failure to accelerate while merging into traffic would have been catastrophic. Thankfully, I was in a parking lot when my transmission failed.

Filed Apr 18, 2014 · Transmission · 38,102 miles · CA

I brought my 2012 mustang gt with a manual transmission in to be serviced because of an awful noise occurring while shifting in and out of 5th gear. The service department now says I need a new transmission at 38,000 miles.

Filed Nov 14, 2012 · Transmission · 12 miles · MO

Tl* 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.

Filed Dec 12, 2011 · Transmission · 1,700 miles · CA

Tl* the contact owns a 2012 ford mustang. The contact was \driving 20 MPH when he realized that the vehicle would not shift into second gear. The vehicle was taken to the dealer who replaced the transmission fluid to remedy the problem but the failure persisted. The manufacturer was not made aware of the failure and the vehicle was not repaired. The failure and the current mileage was 1,700.

Filed Nov 4, 2011 · Transmission · 1,250 miles · TX

Since new the gear changes were difficult to engage, then when miles accumulate it develops unable/very hard to get into first/second/third gears, an incident almost occur when I try to get into first at the green light and other dangerous situations that result on car behind almost rear end me. Ford replace transmission(with same part number) and again at 4300 miles gear changes start to be difficult and transmission whine is present again.

Filed Sep 9, 2011 · Transmission · FL

Tl* the contact owns a 2012 ford mustang. The contact stated that she was unable to shift between third and fourth gears and would hear a loud grinding noise from the vehicle. In addition, there was smoke coming from the vehicle abnormally. The vehicle was towed to the dealer and the transmission was replaced yet the failure recurred shortly thereafter. The manufacturer was made aware of the failure. The current and failure mileages were unknown. The VIN was unavailable.

Filed May 28, 2011 · Transmission · 295 miles · WI

Brand new 2012 ford mustang boss 302, 5.0l, mt82 6-spd transmission. My understanding is this car has a revised clutch mechanism vs. The 2011 model year. Regardless, I've begun to experience the same issues 2011 model year owners report. I've owned the car less than two weeks and with less than 200 miles on the car at a stop light the transmission failed to engage into first gear fully. This results in a grinding coming from the transmission. Nearly rear ended, vehicle was at a light at the end of a freeway ramp and was unable to accelerate until the car was placed into neutral and re-shifted to 1st. 1st to 2nd and 2nd to 3rd shifts tend to be hard, rough or clunky. On occasion shifts to 5th exhibit a clunky sensation as well. At 295 miles was unable to shift into 2nd gear, you could hear the synchros winding up in the transmission during the attempt. Likewise moving back to first, even at speeds of less than 5mph in this instance, resulted in a rough engagement and synchro whine from the tranny. Driving in 2nd gear at 20mph and pushing the clutch in to coast results in a rattling noise intermittently. This rattling just started within the last 50 miles of driving. The build date on the vehicle was 3/31/2011. I've not yet reported this issue to my ford dealer but intend to shortly! Very very worried at over $42,000 this is the most expensive vehicle I've ever purchased and am gravely concerned I may have a lemon on my hands. My previous mustang with a 5 spd manual never exhibited these tendencies. Ford must resolve the issues the mt-82 6 speed transmission immediately or replace it with a properly designed alternate unit. I won't entertain having my special edition vehicle damaged due to a faulty transmission. Likewise I understand the fix offered to 2011 owners only makes matters worse, I refuse to try anything that will worsen the current situation. Deeply fearful that continued use of my 2012 vehicle will result in considerable drivetrain damage or accident.