Tl* the contact owns a 2012 volkswagen jetta sportwagen. the contact noticed that the transmission was hesitant as if the vehicle would stall when needing to change gears. in addition, the gears were slow to change over. the dealer (hansel volkswagen, 2951 corby ave, santa rosa, ca 95407, (707) 501-5977) provided a manufacturer solution of modifying the diesel system, but the failure recurred. the vehicle was taken back to the dealer more than twice, but could not diagnose or replicate the failure. the manufacturer was notified that their solution impacted the transmission, but they provided no remedy. the contact was awaiting a follow-up response from the manufacturer. the failure mileage was not available. *tt contact states that vehicle was apart of the volkswagen diesel modification program required due to emission fraud. after the required modification the transmission misperformed six times when accelerating into freeway traffic or when down-shifting up hill. *tt