Ford Mustang has some shifter issues.
There is a continuation of the investigation into 2011 Ford Mustang vehicles equipped with manual transmissions form the National Highway Transportation Safety Administration. They have looked at 364 reports of shift quality issues form the gear box made by Ford. The Safety Administration has determined that owners have experienced no loss of mobility or any unreasonable safety risk due to the problems. From the first stamen of the Inside Line Ford identified several possible issues that could have contributed to difficulty shifting with the cold transmission fluid and the clutch stay-out at high engine speeds some gear clash and loosening clutch plate bolts in early production vehicles. Since then they since replaced those fasteners with new hardware currently used in production.
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Form the automaker come out with a statement that the gear shift issues were due to the transmission not being up to operating temperature while driving and while sorted themselves out after the drivetrain warmed up.