They never made a 3dr version. There isnt a 3dr version in the new one either...
A company called Sbarro made a 3dr prototype of the Leon but SEAT never put one into production.
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Thanks Ronan
Pity the prototype never went further - it looks good.
Didn't look closely enough but I guess the new Leon has those "handle-less" (proper term?) rear doors then? I've glanced at a few that certainly look like 3 doors...