Welcome Kymco Owners!
I've had a 2013 500x since April of 2014 and have never had starting problems in the winter BUT I'm in the Fort Worth area of Texas. It is kept in the garage, but I have done several lengthy cold weather rides (in the upper 30's-40's) with extended stopping (engine all the way to cold).Perhaps it's just the location that I'm fortunate to be in that allows it to start when cold.