most transmissions make some noise, however when you go from a car thats very noisy in the cabin to a car thats engineered very quiet you can notice these small noises more, i have a 2014 sport nav diesel with the 6 speed manual transmission and it has a very slight whine, tbh i never noticed it until i read this thread and took it out for a drive but with the fan and stereo on you cant hear it unless you have super hearing.