Mine has similar but not the same. On light throttle with 4th gear, between 50-60km/h (which probably equates to around 2000rpm), it makes whining / humming noise. It has not been getting louder since I got the car at 18000km. Now it's almost done 40000km and has not changed.
I had a 2008 model (mine is 2006) for a curtesy car, and at 200km at odometer, it also made similar noise, but much quieter.
I think this noise varies. I took it to two different dealers, and they couldn't tell me exactly why and told me this is a normal variation. Gearbox oil has been changed numerous times I think already about 3 times. I had a factory one, then some new VW oil (wonder which), then I tried Redline ML90 as recommended by Jimmy and back to VW gearbox oil.
The shift is reasonably good. The noise didn't change much with changing to different type.
Oh yes, and my car has been chipped from 19000km.
My warranty ran out, and I just keep my fingers crossed it doesn't get worse.
06 Polo GTI - REVO Stage 2 = 140kw @ wheels.
06 Golf GTI - Bluefin Stage 1 blacked out with ED30 theme, leather, xenon, etc.
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