The upgrade is software-driven. One company spokesman described the problem with the old transmission as “a little hesitation between gears.” Mays described it differently: “The transmission lurches through gear changes with the awkwardness of a 15-year-old learning stick on his brother’s Corolla.”
Mays also drove a 2009 ForTwo with the new transmission changes and said “it’s noticeably improved, but it still has worlds to go.”