The meaning of "ST" on the sporty Fords is Sports Technologies, same as the SVT on the American Fords only it means Special Vehicle Team, as for the RS brand which means "Rallye Sport", GM which own Vauxhall and Opel wanted to use it but they but Ford said No, so they rearranged it and came up with Sport Rallye
Just a short history of the car manufactures initials
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